(gdb) thread apply all bt

Thread 73 (LWP 9421):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f882849ae11 in background_thread_sleep (tsdn=<optimized out>, interval=10000000000, info=<optimized out>) at src/background_thread.c:255
#2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, tsdn=<optimized out>) at src/background_thread.c:307
#3  background_work (ind=<optimized out>, tsd=0x7f87413ee220) at src/background_thread.c:497
#4  background_thread_entry (ind_arg=<optimized out>) at src/background_thread.c:522
#5  0x00007f8828f86ea5 in start_thread (arg=0x7f87413ff700) at pthread_create.c:307
#6  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 72 (LWP 9303):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f882849ae11 in background_thread_sleep (tsdn=<optimized out>, interval=3175000000, info=<optimized out>) at src/background_thread.c:255
#2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, tsdn=<optimized out>) at src/background_thread.c:307
#3  background_work (ind=<optimized out>, tsd=0x7f8745fee220) at src/background_thread.c:497
#4  background_thread_entry (ind_arg=<optimized out>) at src/background_thread.c:522
#5  0x00007f8828f86ea5 in start_thread (arg=0x7f8745fff700) at pthread_create.c:307
#6  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 71 (LWP 9267):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f88251929d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f87477fe700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 70 (LWP 9266):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f8825192850) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f8747fff700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 69 (LWP 9265):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f88251927c0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f8764ff9700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 68 (LWP 9264):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f88251926d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f87657fa700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 67 (LWP 9263):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
---Type <return> to continue, or q <return> to quit---
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f8825192580) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f8765ffb700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 66 (LWP 9262):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f8825192550) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f87667fc700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 65 (LWP 9261):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f8825192460) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f8766ffd700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 64 (LWP 9260):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f88251923d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f87677fe700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 63 (LWP 9259):
#0  0x00007f882849564d in extent_list_remove (extent=0x7f853fae53c0, list=0x7f88200097d0) at include/jemalloc/internal/extent_inlines.h:440
#1  arena_bin_slabs_full_remove (slab=0x7f853fae53c0, bin=0x7f8820009750, arena=0x7f88200008c0) at src/arena.c:1061
#2  arena_dalloc_bin_locked_impl (junked=true, ptr=<optimized out>, slab=0x7f853fae53c0, binind=<error reading variable: Cannot access memory at address 0x7f88200006cc>, bin=0x7f8820009750, arena=0x7f88200008c0, 
    tsdn=<error reading variable: Cannot access memory at address 0x7f8820000708>) at src/arena.c:1701
#3  je_arena_dalloc_bin_junked_locked (tsdn=tsdn@entry=0x7f8767fee220, arena=arena@entry=0x7f88200008c0, bin=bin@entry=0x7f8820009750, binind=binind@entry=25, extent=0x7f853fae53c0, ptr=<optimized out>) at src/arena.c:1714
#4  0x00007f88285046ad in je_tcache_bin_flush_small (tsd=tsd@entry=0x7f8767fee220, tcache=tcache@entry=0x7f87344fc000, tbin=tbin@entry=0x7f87344fc268, binind=binind@entry=25, rem=<optimized out>) at src/tcache.c:189
#5  0x00007f88285058f0 in je_tcache_event_hard (tsd=tsd@entry=0x7f8767fee220, tcache=tcache@entry=0x7f87344fc000) at src/tcache.c:55
#6  0x00007f8828488504 in tcache_event (tcache=0x7f87344fc000, tsd=<optimized out>) at include/jemalloc/internal/tcache_inlines.h:37
#7  tcache_alloc_small (slow_path=false, zero=<optimized out>, binind=<optimized out>, size=32, tcache=0x7f87344fc000, arena=<optimized out>, tsd=<optimized out>) at include/jemalloc/internal/tcache_inlines.h:99
#8  arena_malloc (slow_path=false, tcache=0x7f87344fc000, zero=<optimized out>, ind=<optimized out>, size=32, arena=<optimized out>, tsdn=<optimized out>) at include/jemalloc/internal/arena_inlines_b.h:165
#9  iallocztm (slow_path=false, arena=<optimized out>, is_internal=false, tcache=0x7f87344fc000, zero=<optimized out>, ind=<optimized out>, size=32, tsdn=<optimized out>) at include/jemalloc/internal/jemalloc_internal_inlines_c.h:53
#10 imalloc_no_sample (ind=<optimized out>, usize=32, size=32, tsd=0x7f8767fee220, dopts=<synthetic pointer>, sopts=<synthetic pointer>) at src/jemalloc.c:1949
#11 imalloc_body (tsd=0x7f8767fee220, dopts=<synthetic pointer>, sopts=<synthetic pointer>) at src/jemalloc.c:2123
#12 imalloc (dopts=<synthetic pointer>, sopts=<synthetic pointer>) at src/jemalloc.c:2258
#13 je_mallocx (size=size@entry=32, flags=<optimized out>) at src/jemalloc.c:3137
#14 0x0000000000bcb7fd in cb::_JEArenaMalloc<cb::JEArenaCoreLocalTracker>::malloc (size=size@entry=32) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/je_arena_malloc.cc:266
#15 0x000000000056bb7f in malloc (size=32) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_malloc_arena.cc:39
#16 cb_malloc (size=32) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_malloc_arena.cc:39
#17 0x0000000000bbe1e9 in operator new(unsigned long) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/global_new_replacement.cc:63
#18 0x00000000009fbd1d in _M_clone (__source=..., __dest=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:88
#19 _M_manager (__op=<optimized out>, __source=..., __dest=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:196
#20 std::_Function_handler<int (magma::Slice const&, magma::Slice const&), magma::KeyVersionCompare>::_M_manager(std::_Any_data&, std::_Any_data const&, std::_Manager_operation) (__dest=..., __source=..., __op=<optimized out>)
---Type <return> to continue, or q <return> to quit---
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:283
#21 0x00000000009f85d0 in function (__x=..., this=0x7f8767fecd88) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#22 greaterThan (this=0x7f8767fecd80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/iterator.h:65
#23 indirect_cmp (this=0x7f8767fecd80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/heap/detail/mutable_heap.hpp:115
#24 heap_base (rhs=..., this=0x7f8767fecd80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/heap/detail/stable_heap.hpp:188
#25 top_child_index (index=0, this=0x7f8767fed0d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/heap/d_ary_heap.hpp:339
#26 siftdown (index=0, this=0x7f8767fed0d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/heap/d_ary_heap.hpp:289
#27 decrease (index=0, this=0x7f8767fed0d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/heap/d_ary_heap.hpp:414
#28 decrease (handle=..., this=0x7f8767fed0d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/heap/detail/mutable_heap.hpp:454
#29 decrease (handle=..., this=0x7f8767fed0d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/boost.exploded/include/boost/heap/d_ary_heap.hpp:729
#30 Next (this=0x7f8767fed070) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/iterator.cc:88
#31 magma::MergeIterator::Next() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/iterator.cc:83
#32 0x0000000000a0bc5e in magma::KVReader::ReadKVs (this=this@entry=0x7f8767fed130) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/common.cc:70
#33 0x0000000000a35adc in magma::LSMTree::mergeSSTables(std::vector<std::shared_ptr<magma::Table>, std::allocator<std::shared_ptr<magma::Table> > >&, magma::ItemGCFilter&, unsigned long, double, std::vector<std::shared_ptr<magma::Table>, std::allocator<std::shared_ptr<magma::Table> > >*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:858
#34 0x0000000000a034f5 in magma::LSMTree::compactLevelForInputs(int, int, std::unique_lock<std::mutex>&, magma::LSMTree::CompactionTrigger, std::vector<std::shared_ptr<magma::Table>, std::allocator<std::shared_ptr<magma::Table> > >&, std::vector<std::shared_ptr<magma::Table>, std::allocator<std::shared_ptr<magma::Table> > >&, std::function<std::unique_ptr<magma::GCContext, std::default_delete<magma::GCContext> > (bool)>) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/compaction.cc:235
#35 0x0000000000a05bbf in magma::LSMTree::compactLevel(int, std::unique_lock<std::mutex>&, magma::LSMTree::CompactionTrigger, std::function<std::unique_ptr<magma::GCContext, std::default_delete<magma::GCContext> > (bool)>) ()
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#36 0x0000000000a05e91 in magma::LSMTree::compact(std::unique_lock<std::mutex>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/compaction.cc:411
#37 0x0000000000a27b08 in doCompactionWork (this=0x7f87c45d7410) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:417
#38 operator() (__closure=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:428
#39 __invoke_impl<void, magma::LSMTree::queueCompaction()::<lambda()>&> (__f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:60
#40 __invoke_r<void, magma::LSMTree::queueCompaction()::<lambda()>&> (__fn=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:110
#41 std::_Function_handler<void (), magma::LSMTree::queueCompaction()::{lambda()#1}>::_M_invoke(std::_Any_data const&) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:291
#42 0x00000000009ec0b8 in operator() (this=0x7f87a44f96c0) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#43 magma::TimedTask::Complete(bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:158
#44 0x00000000009eda31 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:180
#45 0x0000000000baf899 in run (this=0x7f88251923a0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#46 platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#47 0x00007f8828f86ea5 in start_thread (arg=0x7f8767fff700) at pthread_create.c:307
#48 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 62 (LWP 9258):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f88251921c0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f876cff9700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 61 (LWP 9257):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f8825192100) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f876d7fa700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 60 (LWP 9256):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f88251920a0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f876dffb700) at pthread_create.c:307
---Type <return> to continue, or q <return> to quit---
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 59 (LWP 9255):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f8825192070) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f876e7fc700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 58 (LWP 9254):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f8825191ec0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f876effd700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 57 (LWP 9253):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009ed638 in magma::TaskQueue::dequeue(std::atomic<bool>&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:105
#4  0x00000000009eda21 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:179
#5  0x0000000000baf899 in run (this=0x7f8825191dd0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#6  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#7  0x00007f8828f86ea5 in start_thread (arg=0x7f876f7fe700) at pthread_create.c:307
#8  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 56 (LWP 9252):
#0  0x00007f88268c12e7 in unlink () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f882683bdf9 in __GI_remove (file=0x7f871ba05680 <Address 0x7f871ba05680 out of bounds>) at ../sysdeps/posix/remove.c:33
#2  0x0000000000bb3f45 in cb::io::rmrf(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/dirutils.cc:224
#3  0x00000000009d9bf8 in magma::RemoveAll(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_default.cc:98
#4  0x00000000009d9c4d in magma::DefaultFileRemover(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_default.cc:78
#5  0x00000000009dda71 in __invoke_impl<magma::Status, magma::Status (*&)(std::__cxx11::basic_string<char> const&, bool), std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool> (__f=<optimized out>)
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:88
#6  __invoke_r<magma::Status, magma::Status (*&)(std::__cxx11::basic_string<char> const&, bool), std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool> (__fn=<optimized out>)
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:115
#7  std::_Function_handler<magma::Status (std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool), magma::Status (*)(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool)>::_M_invoke(std::_Any_data const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool&&) (__functor=..., __args#0=..., __args#1=<optimized out>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:292
#8  0x00000000009d84e7 in operator() (__args#1=<optimized out>, __args#0=..., this=<optimized out>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#9  operator() (__closure=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_default.cc:53
#10 __invoke_impl<void, magma::ASyncFileRemover::operator()(const string&, bool)::<lambda()>&> (__f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:60
#11 __invoke_r<void, magma::ASyncFileRemover::operator()(const string&, bool)::<lambda()>&> (__fn=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:110
#12 std::_Function_handler<void(), magma::ASyncFileRemover::operator()(const string&, bool)::<lambda()> >::_M_invoke(const std::_Any_data &) (__functor=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:291
#13 0x00000000009ec0b8 in operator() (this=0x7f8690f00be0) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#14 magma::TimedTask::Complete(bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:158
#15 0x00000000009eda31 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:180
#16 0x0000000000baf899 in run (this=0x7f8825191da0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#17 platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#18 0x00007f8828f86ea5 in start_thread (arg=0x7f876ffff700) at pthread_create.c:307
#19 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 55 (LWP 9251):
#0  0x00007f8828f8defd in open64 () at ../sysdeps/unix/syscall-template.S:81
#1  0x00000000009da8f5 in magma::BasicFile::Open(int) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_linux.cc:94

#2  0x0000000000a4627e in magma::FileWithStats::Open (this=<optimized out>, openFlags=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_stats.cc:26
#3  0x00000000009dea15 in magma::BufferedFileWriter::Open() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/rw_file.cc:297
---Type <return> to continue, or q <return> to quit---
#4  0x0000000000a51073 in magma::SSTableWriter::Init() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/sstable/sstable_writer.cc:78
#5  0x0000000000a5416a in magma::SSTableWriter::AddKV(magma::Slice const&, magma::Slice const&, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/sstable/sstable_writer.cc:125
#6  0x0000000000a2aa06 in AddKVs (pairs=..., w=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:54
#7  magma::LSMTree::writeSSTable(magma::SSTableWriter&, magma::Iterator*, long, std::function<bool (magma::Slice const&)>) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:753
#8  0x0000000000a2b11c in magma::LSMTree::writeSSTable(bool, magma::Iterator*, unsigned long, long, bool, std::function<bool (magma::Slice const&)>) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:711
#9  0x0000000000a2b5da in magma::LSMTree::writeMemtable(magma::Memtable*, bool)::{lambda(magma::Iterator*)#3}::operator()(magma::Iterator*) const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/memtable/memtable.h:69
#10 0x0000000000a2becb in magma::LSMTree::writeMemtable(magma::Memtable*, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:487
#11 0x0000000000a30f03 in magma::LSMTree::doMemtableFlushWork() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:545

#12 0x0000000000a318ed in operator() (__closure=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:929
#13 __invoke_impl<std::tuple<magma::Status, magma::CheckpointTransaction>, magma::LSMTree::newFlush()::<lambda()>&> (__f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:60
#14 __invoke_r<std::tuple<magma::Status, magma::CheckpointTransaction>, magma::LSMTree::newFlush()::<lambda()>&> (__fn=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:115
#15 std::_Function_handler<std::tuple<magma::Status, magma::CheckpointTransaction>(), magma::LSMTree::newFlush()::<lambda()> >::_M_invoke(const std::_Any_data &) (__functor=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:292
#16 0x0000000000a153df in operator() (this=0x7f8739429090) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#17 magma::FlushWork::Execute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/flush_work.cc:61

#18 0x00000000009bda78 in magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode)::{lambda()#2}::operator()() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:522
#19 0x00000000009bf421 in __invoke_impl<magma::Status, magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode)::<lambda()>&> (__f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:289
#20 __invoke_r<void, magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode)::<lambda()>&> (__fn=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:110
#21 std::_Function_handler<void(), magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode)::<lambda()> >::_M_invoke(const std::_Any_data &) (__functor=...)
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:291
#22 0x00000000009ec0b8 in operator() (this=0x7f87393c2b90) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#23 magma::TimedTask::Complete(bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:158
#24 0x00000000009eda31 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:180
#25 0x0000000000baf899 in run (this=0x7f8825191b30) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#26 platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#27 0x00007f8828f86ea5 in start_thread (arg=0x7f8784ff9700) at pthread_create.c:307
#28 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 54 (LWP 9250):
#0  0x00007f88268c12e7 in unlink () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f882683bdf9 in __GI_remove (file=0x7f873f27c9a0 <Address 0x7f873f27c9a0 out of bounds>) at ../sysdeps/posix/remove.c:33
#2  0x0000000000bb3f45 in cb::io::rmrf(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/dirutils.cc:224
#3  0x00000000009d9bf8 in magma::RemoveAll(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_default.cc:98
#4  0x00000000009d9c4d in magma::DefaultFileRemover(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_default.cc:78
#5  0x00000000009dda71 in __invoke_impl<magma::Status, magma::Status (*&)(std::__cxx11::basic_string<char> const&, bool), std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool> (__f=<optimized out>)
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:88
#6  __invoke_r<magma::Status, magma::Status (*&)(std::__cxx11::basic_string<char> const&, bool), std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool> (__fn=<optimized out>)
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:115
#7  std::_Function_handler<magma::Status (std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool), magma::Status (*)(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool)>::_M_invoke(std::_Any_data const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool&&) (__functor=..., __args#0=..., __args#1=<optimized out>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:292
#8  0x00000000009d8bf7 in operator() (__args#1=<optimized out>, __args#0=..., this=<optimized out>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#9  magma::ASyncFileRemover::operator()(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_default.cc:60
#10 0x00000000009b3617 in operator() (blocking=<optimized out>, path=..., __closure=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:94
#11 __invoke_impl<magma::Status, magma::KVStore::KVStore(magma::KVStoreConfig&, magma::Magma::KVStoreID, magma::Magma::KVStoreRevision)::<lambda(const string&, bool)>&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, bool> (__f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:60
#12 __invoke_r<magma::Status, magma::KVStore::KVStore(magma::KVStoreConfig&, magma::Magma::KVStoreID, magma::Magma::KVStoreRevision)::<lambda(const string&, bool)>&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, bool> (__fn=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:115
#13 std::_Function_handler<magma::Status(const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, bool), magma::KVStore::KVStore(magma::KVStoreConfig&, magma::Magma::KVStoreID, magma::Magma::KVStoreRevision)::<lambda(const string&, bool)> >::_M_invoke(const std::_Any_data &, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > &, <unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0x793d4ec, DIE 0x7a1eca7>) (__functor=..., __args#0=..., __args#1=<optimized out>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:292
#14 0x0000000000a0f698 in operator() (__args#1=true, __args#0=..., this=0x7f873ff4f788) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#15 magma::TreeSnapshot::RemoveFile(magma::Directory&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/tree_snapshot.cc:661

#16 0x0000000000a3efaa in deleteFile (dirToSync=..., this=0x7f873fd091c0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/checkpoint.cc:515
#17 magma::CheckpointManager::processPendingDeletes() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/checkpoint.cc:244
#18 0x0000000000a3f646 in magma::CheckpointManager::cleanupQueue (this=this@entry=0x7f873ff9efc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/checkpoint.cc:399
#19 0x0000000000a3f77b in magma::CheckpointManager::Resize(unsigned long) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/checkpoint.cc:565
#20 0x0000000000a3f7fc in magma::LSMTree::SetMaxCheckpoints (this=this@entry=0x7f873ff4f010, newSize=newSize@entry=4) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/checkpoint.cc:71
#21 0x00000000009bd854 in operator() (tree=0x7f873ff4f010, __closure=<synthetic pointer>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:311
#22 magma::KVStore::cleanupCheckpoints(magma::FlushMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:317
#23 0x00000000009be432 in magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:459

#24 0x00000000009bee28 in magma::KVStore::FlushMemTables (this=<optimized out>, wal=<optimized out>, flushMode=flushMode@entry=magma::Persistent, blockMode=blockMode@entry=magma::NonWaiting)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:394
#25 0x000000000095ed7f in magma::Magma::Impl::tryWriteCacheFlush(magma::BlockingMode, magma::FlushMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:1434
#26 0x000000000095f101 in magma::Magma::Impl::heartbeatCallback() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:1626
#27 0x00000000009ec0b8 in operator() (this=0x7f86becc6340) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#28 magma::TimedTask::Complete(bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:158
---Type <return> to continue, or q <return> to quit---
#29 0x00000000009eda31 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:180
#30 0x0000000000baf899 in run (this=0x7f8825191bc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#31 platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#32 0x00007f8828f86ea5 in start_thread (arg=0x7f87857fa700) at pthread_create.c:307
#33 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 53 (LWP 9249):
#0  0x00007f88268c77f7 in ftruncate64 () at ../sysdeps/unix/syscall-template.S:81
#1  0x00000000009dc192 in magma::BasicFile::Truncate(unsigned long) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_linux.cc:364
#2  0x0000000000a4639f in magma::FileWithStats::Truncate (this=<optimized out>, size=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_stats.cc:112
#3  0x00000000009df09b in magma::BufferedFileWriter::Close() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/rw_file.cc:322
#4  0x00000000009df136 in magma::BufferedFileWriter::~BufferedFileWriter (this=0x7f873728b800, __in_chrg=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/rw_file.cc:328
#5  0x0000000000a512e8 in operator() (__ptr=0x7f873728b800, this=0x7f8785fe92b0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/sstable/sstable_writer.cc:95
#6  reset (__p=0x0, this=0x7f8785fe92b0) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/unique_ptr.h:182
#7  reset (__p=0x0, this=0x7f8785fe92b0) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/unique_ptr.h:456
#8  magma::SSTableWriter::~SSTableWriter (this=0x7f8785fe92b0, __in_chrg=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/sstable/sstable_writer.cc:95
#9  0x0000000000a2b1f7 in magma::LSMTree::writeSSTable(bool, magma::Iterator*, unsigned long, long, bool, std::function<bool (magma::Slice const&)>) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:720
#10 0x0000000000a2b79e in magma::LSMTree::writeMemtable(magma::Memtable*, bool)::{lambda(magma::Iterator*)#4}::operator()(magma::Iterator*) const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/memtable/memtable.h:69
#11 0x0000000000a2bfe3 in magma::LSMTree::writeMemtable(magma::Memtable*, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:504
#12 0x0000000000a30f03 in magma::LSMTree::doMemtableFlushWork() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:545
#13 0x0000000000a318ed in operator() (__closure=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:929
#14 __invoke_impl<std::tuple<magma::Status, magma::CheckpointTransaction>, magma::LSMTree::newFlush()::<lambda()>&> (__f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:60
#15 __invoke_r<std::tuple<magma::Status, magma::CheckpointTransaction>, magma::LSMTree::newFlush()::<lambda()>&> (__fn=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:115
#16 std::_Function_handler<std::tuple<magma::Status, magma::CheckpointTransaction>(), magma::LSMTree::newFlush()::<lambda()> >::_M_invoke(const std::_Any_data &) (__functor=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:292
#17 0x0000000000a153df in operator() (this=0x7f8737052370) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#18 magma::FlushWork::Execute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/flush_work.cc:61
#19 0x00000000009bd9cf in magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode)::{lambda()#2}::operator()() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:515
#20 0x00000000009bf421 in __invoke_impl<magma::Status, magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode)::<lambda()>&> (__f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:289
#21 __invoke_r<void, magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode)::<lambda()>&> (__fn=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:110
#22 std::_Function_handler<void(), magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode)::<lambda()> >::_M_invoke(const std::_Any_data &) (__functor=...)
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:291
#23 0x00000000009ec0b8 in operator() (this=0x7f8736fe3f90) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#24 magma::TimedTask::Complete(bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:158
#25 0x00000000009eda31 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:180
#26 0x0000000000baf899 in run (this=0x7f8825191b00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#27 platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#28 0x00007f8828f86ea5 in start_thread (arg=0x7f8785ffb700) at pthread_create.c:307
#29 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 52 (LWP 9248):
#0  0x00007f88268c12e7 in unlink () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f882683bdf9 in __GI_remove (file=0x7f8723963790 <Address 0x7f8723963790 out of bounds>) at ../sysdeps/posix/remove.c:33
#2  0x0000000000bb3f45 in cb::io::rmrf(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/dirutils.cc:224
#3  0x00000000009d9bf8 in magma::RemoveAll(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_default.cc:98
#4  0x00000000009d9c4d in magma::DefaultFileRemover(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_default.cc:78
#5  0x00000000009dda71 in __invoke_impl<magma::Status, magma::Status (*&)(std::__cxx11::basic_string<char> const&, bool), std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool> (__f=<optimized out>)
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:88
#6  __invoke_r<magma::Status, magma::Status (*&)(std::__cxx11::basic_string<char> const&, bool), std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool> (__fn=<optimized out>)
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:115
#7  std::_Function_handler<magma::Status (std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool), magma::Status (*)(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool)>::_M_invoke(std::_Any_data const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool&&) (__functor=..., __args#0=..., __args#1=<optimized out>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:292
#8  0x00000000009d8bf7 in operator() (__args#1=<optimized out>, __args#0=..., this=<optimized out>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#9  magma::ASyncFileRemover::operator()(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/file/file_impl_default.cc:60
#10 0x00000000009b3617 in operator() (blocking=<optimized out>, path=..., __closure=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:94
#11 __invoke_impl<magma::Status, magma::KVStore::KVStore(magma::KVStoreConfig&, magma::Magma::KVStoreID, magma::Magma::KVStoreRevision)::<lambda(const string&, bool)>&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, bool> (__f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:60
#12 __invoke_r<magma::Status, magma::KVStore::KVStore(magma::KVStoreConfig&, magma::Magma::KVStoreID, magma::Magma::KVStoreRevision)::<lambda(const string&, bool)>&, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, bool> (__fn=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:115
#13 std::_Function_handler<magma::Status(const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, bool), magma::KVStore::KVStore(magma::KVStoreConfig&, magma::Magma::KVStoreID, magma::Magma::KVStoreRevision)::<lambda(const string&, bool)> >::_M_invoke(const std::_Any_data &, const std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > &, <unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0x793d4ec, DIE 0x7a1eca7>) (__functor=..., __args#0=..., __args#1=<optimized out>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:292
#14 0x0000000000a0f698 in operator() (__args#1=true, __args#0=..., this=0x7f87306b4788) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#15 magma::TreeSnapshot::RemoveFile(magma::Directory&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/tree_snapshot.cc:661
#16 0x0000000000a3efaa in deleteFile (dirToSync=..., this=0x7f8730f50280) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/checkpoint.cc:515
#17 magma::CheckpointManager::processPendingDeletes() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/checkpoint.cc:244
---Type <return> to continue, or q <return> to quit---
#18 0x0000000000a3f646 in magma::CheckpointManager::cleanupQueue (this=this@entry=0x7f873061b600) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/checkpoint.cc:399
#19 0x0000000000a3f77b in magma::CheckpointManager::Resize(unsigned long) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/checkpoint.cc:565
#20 0x0000000000a3f7fc in magma::LSMTree::SetMaxCheckpoints (this=this@entry=0x7f87306b4010, newSize=newSize@entry=4) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/checkpoint.cc:71
#21 0x00000000009bd854 in operator() (tree=0x7f87306b4010, __closure=<synthetic pointer>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:311
#22 magma::KVStore::cleanupCheckpoints(magma::FlushMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:317
#23 0x00000000009be432 in magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:459
#24 0x00000000009bee28 in magma::KVStore::FlushMemTables (this=<optimized out>, wal=<optimized out>, flushMode=flushMode@entry=magma::Persistent, blockMode=blockMode@entry=magma::NonWaiting)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:394
#25 0x000000000095ed7f in magma::Magma::Impl::tryWriteCacheFlush(magma::BlockingMode, magma::FlushMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:1434
#26 0x000000000095f101 in magma::Magma::Impl::heartbeatCallback() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:1626
#27 0x00000000009ec0b8 in operator() (this=0x7f86083e6aa0) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#28 magma::TimedTask::Complete(bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:158
#29 0x00000000009eda31 in magma::TaskWorker::loop(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/worker.cc:180
#30 0x0000000000baf899 in run (this=0x7f8825191860) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#31 platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64

#32 0x00007f8828f86ea5 in start_thread (arg=0x7f87867fc700) at pthread_create.c:307
#33 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 51 (LWP 9247):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f882849ae11 in background_thread_sleep (tsdn=<optimized out>, interval=3175000000, info=<optimized out>) at src/background_thread.c:255
#2  background_work_sleep_once (ind=<optimized out>, info=<optimized out>, tsdn=<optimized out>) at src/background_thread.c:307
#3  background_work (ind=<optimized out>, tsd=0x7f8786fec220) at src/background_thread.c:497
#4  background_thread_entry (ind_arg=<optimized out>) at src/background_thread.c:522
#5  0x00007f8828f86ea5 in start_thread (arg=0x7f8786ffd700) at pthread_create.c:307
#6  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 50 (LWP 7604):
#0  lock (this=<optimized out>) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/MicroSpinLock.h:89
#1  lock (this=<optimized out>) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/SpinLock.h:48
#2  folly::NotificationQueue<folly::Function<void ()> >::Consumer::consumeMessages(bool, unsigned long*) (this=0x7f88255e1100, isDrain=<optimized out>, numConsumed=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/NotificationQueue.h:695
#3  0x00007f8828258f9a in event_persist_closure (ev=<optimized out>, base=0x7f882508de00) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1629
#4  event_process_active_single_queue (base=base@entry=0x7f882508de00, max_to_process=max_to_process@entry=2147483647, endtime=endtime@entry=0x0, activeq=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1688
#5  0x00007f882825953f in event_process_active (base=0x7f882508de00) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1789
#6  event_base_loop (base=0x7f882508de00, flags=1) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:2012
#7  0x0000000000c2adb7 in folly::EventBase::loopBody (this=this@entry=0x7f882509ff00, flags=flags@entry=0, ignoreKeepAlive=ignoreKeepAlive@entry=false)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
#8  0x0000000000c2b286 in folly::EventBase::loop (this=this@entry=0x7f882509ff00) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#9  0x0000000000c2cc46 in folly::EventBase::loopForever (this=0x7f882509ff00) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#10 0x0000000000c18ef9 in folly::IOThreadPoolExecutor::threadRun (this=0x7f882509f780, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/IOThreadPoolExecutor.cpp:195
#11 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#12 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#13 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#14 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#15 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#16 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#17 0x00007f8828f86ea5 in start_thread (arg=0x7f87877fe700) at pthread_create.c:307
#18 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 49 (LWP 7603):
#0  0x00007f8828f8d6fd in write () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000000000c29b76 in folly::NotificationQueue<folly::Function<void ()> >::ensureSignalLocked() const (this=this@entry=0x7f88255e6280)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/NotificationQueue.h:517
#2  0x0000000000c307b8 in ensureSignalLocked (this=0x7f88255e6280) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/NotificationQueue.h:505
#3  folly::NotificationQueue<folly::Function<void ()> >::putMessageImpl<folly::Function<void ()> >(folly::Function<void ()>&&, unsigned long, bool) (this=0x7f88255e6280, message=<optimized out>, maxSize=maxSize@entry=0, throws=throws@entry=true)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/NotificationQueue.h:595
#4  0x0000000000c29c9b in putMessage<folly::Function<void()> > (message=<optimized out>, this=<optimized out>) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/NotificationQueue.h:409
#5  folly::EventBase::runInEventBaseThread(folly::Function<void ()>) (this=0x7f882509ff00, fn=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:640
#6  0x0000000000abb8e0 in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f8787fed650) at /opt/gcc-10.2.0/include/c++/10.2.0/new:175
#7  0x0000000000ac356e in operator() (this=0x7f8787fed650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
---Type <return> to continue, or q <return> to quit---
#8  CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#9  0x0000000000c216d0 in operator() (this=0x7f8787fed840) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#10 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f8825151d00, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xaa39e93, DIE 0xaabddc8>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#11 0x0000000000c0c16a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151d00, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255e6240) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255e6240) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f8787fff700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 48 (LWP 7602):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
#1  0x00007f8828f88e9b in _L_lock_883 () from /lib64/libpthread.so.0
#2  0x00007f8828f88d68 in __GI___pthread_mutex_lock (mutex=0x7f8739098f30) at ../nptl/pthread_mutex_lock.c:78
#3  0x00000000007e02ec in __gthread_mutex_lock (__mutex=0x7f8739098f30) at /opt/gcc-10.2.0/include/c++/10.2.0/x86_64-pc-linux-gnu/bits/gthr-default.h:749
#4  lock (this=0x7f8739098f30) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_mutex.h:100
#5  lock_guard (__m=..., this=0x7f87a4fe71d8) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_mutex.h:159
#6  CheckpointManager::removeClosedUnrefCheckpoints() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/checkpoint_manager.cc:608

#7  0x00000000007e90ac in CheckpointMemRecoveryTask::attemptCheckpointRemoval() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/checkpoint_remover.cc:100
#8  0x00000000007ea307 in CheckpointMemRecoveryTask::runInner() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/checkpoint_remover.cc:254
#9  0x0000000000ac21b9 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:98
#10 0x0000000000abb89a in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f87a4fe7650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:309
#11 0x0000000000ac356e in operator() (this=0x7f87a4fe7650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#12 CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#13 0x0000000000c216d0 in operator() (this=0x7f87a4fe7840) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#14 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f8825151d00, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xaa39e93, DIE 0xaabddc8>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#15 0x0000000000c0c16a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151d00, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#16 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#17 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#18 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#19 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#20 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#21 0x0000000000abb594 in operator() (this=0x7f88255e61c0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#22 operator() (__closure=0x7f88255e61c0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#23 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#24 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#25 0x00007f8828f86ea5 in start_thread (arg=0x7f87a4ff9700) at pthread_create.c:307
#26 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 47 (LWP 7601):
#0  __atomic_add (__val=1, __mem=0x7f8721229f88) at /opt/gcc-10.2.0/include/c++/10.2.0/ext/atomicity.h:96
#1  __atomic_add_dispatch (__val=1, __mem=0x7f8721229f88) at /opt/gcc-10.2.0/include/c++/10.2.0/ext/atomicity.h:96
#2  _M_add_ref_copy (this=0x7f8721229f80) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/shared_ptr_base.h:142
#3  __shared_count (__r=..., this=0x7f87a57e82b8) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/shared_ptr_base.h:740
#4  __shared_ptr (this=0x7f87a57e82b0) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/shared_ptr_base.h:1181
#5  shared_ptr (this=0x7f87a57e82b0) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/shared_ptr.h:149
#6  DcpProducer::findStreams (this=0x7f87387a9f80, vbid=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/producer.cc:2051
---Type <return> to continue, or q <return> to quit---
#7  0x00000000008ee2e9 in ActiveStreamCheckpointProcessorTask::queuePop() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/active_stream_checkpoint_processor_task.cc:109
#8  0x00000000008ee39d in ActiveStreamCheckpointProcessorTask::run() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/active_stream_checkpoint_processor_task.cc:47
#9  0x0000000000ac21b9 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:98
#10 0x0000000000abb89a in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f87a57e8650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:309
#11 0x0000000000ac356e in operator() (this=0x7f87a57e8650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#12 CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#13 0x0000000000c216d0 in operator() (this=0x7f87a57e8840) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#14 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f8825151d00, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xaa39e93, DIE 0xaabddc8>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#15 0x0000000000c0c16a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151d00, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#16 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#17 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#18 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#19 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#20 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#21 0x0000000000abb594 in operator() (this=0x7f88255e6180) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#22 operator() (__closure=0x7f88255e6180) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#23 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#24 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#25 0x00007f8828f86ea5 in start_thread (arg=0x7f87a57fa700) at pthread_create.c:307
#26 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 46 (LWP 7599):

#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=2793317912, absSteadyTime=absSteadyTime@entry=0x7f87a67ea5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027de228)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027de228, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87a67ea618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027de228) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027de228, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027de228, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255e6000) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255e6000) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87a67fc700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

---Type <return> to continue, or q <return> to quit---
Thread 45 (LWP 7598):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=2801710616, absSteadyTime=absSteadyTime@entry=0x7f87a6feb5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027df0f8)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027df0f8, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87a6feb618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027df0f8) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027df0f8, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027df0f8, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255dcfc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255dcfc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87a6ffd700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 44 (LWP 7597):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=2810103320, absSteadyTime=absSteadyTime@entry=0x7f87a77ec5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027db750)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027db750, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87a77ec618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027db750) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027db750, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027db750, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
---Type <return> to continue, or q <return> to quit---
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255dcf80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255dcf80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87a77fe700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 43 (LWP 7596):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=2818496024, absSteadyTime=absSteadyTime@entry=0x7f87a7fed5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dfbf0)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dfbf0, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87a7fed618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dfbf0) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dfbf0, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dfbf0, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255dcf40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255dcf40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87a7fff700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 42 (LWP 7595):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=3305010712, absSteadyTime=absSteadyTime@entry=0x7f87c4fe75f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027e04c0)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027e04c0, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87c4fe7618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027e04c0) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027e04c0, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027e04c0, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
---Type <return> to continue, or q <return> to quit---
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255dcf00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255dcf00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87c4ff9700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 41 (LWP 7594):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=3313403416, absSteadyTime=absSteadyTime@entry=0x7f87c57e85f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dd118)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dd118, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87c57e8618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dd118) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dd118, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dd118, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255dcec0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255dcec0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87c57fa700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 40 (LWP 7593):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=3321796120, absSteadyTime=absSteadyTime@entry=0x7f87c5fe95f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dc8a8)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dc8a8, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87c5fe9618, waitMask=waitMask@entry=4294967295)
---Type <return> to continue, or q <return> to quit---
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dc8a8) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dc8a8, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dc8a8, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255dce80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255dce80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87c5ffb700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 39 (LWP 7592):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=3330188824, absSteadyTime=absSteadyTime@entry=0x7f87c67ea5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dd088)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dd088, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87c67ea618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dd088) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dd088, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dd088, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255d6e40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255d6e40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
---Type <return> to continue, or q <return> to quit---
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87c67fc700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 38 (LWP 7591):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=3338581528, absSteadyTime=absSteadyTime@entry=0x7f87c6feb5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027e1240)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027e1240, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87c6feb618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027e1240) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027e1240, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027e1240, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255d6e00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255d6e00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87c6ffd700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 37 (LWP 7590):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=3346974232, absSteadyTime=absSteadyTime@entry=0x7f87c77ec5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027de720)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027de720, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87c77ec618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027de720) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027de720, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027de720, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
---Type <return> to continue, or q <return> to quit---
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255d6dc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255d6dc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87c77fe700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 36 (LWP 7589):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=3355366936, absSteadyTime=absSteadyTime@entry=0x7f87c7fed5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027e0dd8)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027e0dd8, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87c7fed618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027e0dd8) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027e0dd8, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027e0dd8, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255d6d00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255d6d00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87c7fff700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 35 (LWP 7588):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=3908990488, absSteadyTime=absSteadyTime@entry=0x7f87e8fe75f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dcc20)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dcc20, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87e8fe7618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dcc20) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dcc20, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
---Type <return> to continue, or q <return> to quit---
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dcc20, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255d6d80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255d6d80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87e8ff9700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 34 (LWP 7587):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=3917383192, absSteadyTime=absSteadyTime@entry=0x7f87e97e85f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dc560)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dc560, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87e97e8618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dc560) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dc560, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dc560, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255d6d40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255d6d40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87e97fa700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
---Type <return> to continue, or q <return> to quit---

Thread 33 (LWP 7586):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=3925775896, absSteadyTime=absSteadyTime@entry=0x7f87e9fe95f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027e06b8)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027e06b8, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f87e9fe9618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027e06b8) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027e06b8, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027e06b8, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a6a340, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a6a340) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a6a300, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88255d6cc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88255d6cc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f87e9ffb700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 32 (LWP 7585):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=__cond@entry=0x7f873e2f5340) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=this@entry=0x7f873e2f5340, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009b875f in magma::KVStore::acquireFlushBarrier() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:1759
#4  0x00000000009be186 in magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:410
#5  0x00000000009bee28 in magma::KVStore::FlushMemTables (this=<optimized out>, wal=<optimized out>, flushMode=<optimized out>, blockMode=blockMode@entry=magma::Blocking)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:394
#6  0x000000000095c985 in magma::Magma::Impl::syncKVStore(unsigned short, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:1464
#7  0x000000000095cb4a in SyncKVStore (kvID=<optimized out>, this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:347
#8  magma::Magma::SyncKVStore(unsigned short) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:351
#9  0x00000000008b91cd in MagmaMemoryTrackingProxy::SyncKVStore(unsigned short) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvstore/magma-kvstore/magma-memory-tracking-proxy.cc:489

#10 0x000000000089aef8 in MagmaKVStore::makeFileHandle(Vbid) const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/memcached/vbucket.h:62
#11 0x00000000008a29f6 in MagmaKVStore::initByIdScanContext(std::unique_ptr<StatusCallback<GetValue>, std::default_delete<StatusCallback<GetValue> > >, std::unique_ptr<StatusCallback<CacheLookup>, std::default_delete<StatusCallback<CacheLookup> > >, Vbid, std::vector<ByIdRange, std::allocator<ByIdRange> > const&, DocumentFilter, ValueFilter) const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvstore/magma-kvstore/magma-kvstore.cc:1812
#12 0x00000000008efe9d in DCPBackfillByIdDisk::create() () at /opt/gcc-10.2.0/include/c++/10.2.0/ext/atomicity.h:70

#13 0x00000000008f61a2 in virtual thunk to DCPBackfillDisk::run() () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_mutex.h:104

#14 0x00000000008f8063 in BackfillManager::backfill() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/backfill-manager.cc:345
#15 0x00000000008f82f4 in BackfillManagerTask::run() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/backfill-manager.cc:78
#16 0x0000000000ac21b9 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:98
#17 0x0000000000abb89a in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f87ea7ea650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:309
#18 0x0000000000ac356e in operator() (this=0x7f87ea7ea650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#19 CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#20 0x0000000000c216d0 in operator() (this=0x7f87ea7ea840) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#21 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f8825151100, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xaa39e93, DIE 0xaabddc8>)
---Type <return> to continue, or q <return> to quit---
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#22 0x0000000000c0c16a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#23 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#24 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#25 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#26 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#27 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#28 0x0000000000abb594 in operator() (this=0x7f88255d6c80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#29 operator() (__closure=0x7f88255d6c80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#30 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#31 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#32 0x00007f8828f86ea5 in start_thread (arg=0x7f87ea7fc700) at pthread_create.c:307
#33 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 31 (LWP 7584):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=__cond@entry=0x7f8737100340) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=this@entry=0x7f8737100340, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009b875f in magma::KVStore::acquireFlushBarrier() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:1759
#4  0x00000000009be186 in magma::KVStore::flushMemTables(magma::WAL*, magma::WALOffset, magma::FlushMode, magma::BlockingMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:410
#5  0x00000000009bee28 in magma::KVStore::FlushMemTables (this=<optimized out>, wal=<optimized out>, flushMode=<optimized out>, blockMode=blockMode@entry=magma::Blocking)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:394
#6  0x000000000095c985 in magma::Magma::Impl::syncKVStore(unsigned short, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:1464
#7  0x000000000095cb4a in SyncKVStore (kvID=<optimized out>, this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:347
#8  magma::Magma::SyncKVStore(unsigned short) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:351
#9  0x00000000008b91cd in MagmaMemoryTrackingProxy::SyncKVStore(unsigned short) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvstore/magma-kvstore/magma-memory-tracking-proxy.cc:489
#10 0x000000000089aef8 in MagmaKVStore::makeFileHandle(Vbid) const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/memcached/vbucket.h:62
#11 0x00000000008a29f6 in MagmaKVStore::initByIdScanContext(std::unique_ptr<StatusCallback<GetValue>, std::default_delete<StatusCallback<GetValue> > >, std::unique_ptr<StatusCallback<CacheLookup>, std::default_delete<StatusCallback<CacheLookup> > >, Vbid, std::vector<ByIdRange, std::allocator<ByIdRange> > const&, DocumentFilter, ValueFilter) const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvstore/magma-kvstore/magma-kvstore.cc:1812
#12 0x00000000008efe9d in DCPBackfillByIdDisk::create() () at /opt/gcc-10.2.0/include/c++/10.2.0/ext/atomicity.h:70
#13 0x00000000008f61a2 in virtual thunk to DCPBackfillDisk::run() () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_mutex.h:104
#14 0x00000000008f8063 in BackfillManager::backfill() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/backfill-manager.cc:345
#15 0x00000000008f82f4 in BackfillManagerTask::run() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/backfill-manager.cc:78
#16 0x0000000000ac21b9 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:98
#17 0x0000000000abb89a in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f87eafeb650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:309
#18 0x0000000000ac356e in operator() (this=0x7f87eafeb650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#19 CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#20 0x0000000000c216d0 in operator() (this=0x7f87eafeb840) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#21 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f8825151100, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xaa39e93, DIE 0xaabddc8>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#22 0x0000000000c0c16a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151100, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#23 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#24 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#25 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#26 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#27 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#28 0x0000000000abb594 in operator() (this=0x7f88255d6c40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#29 operator() (__closure=0x7f88255d6c40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#30 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#31 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#32 0x00007f8828f86ea5 in start_thread (arg=0x7f87eaffd700) at pthread_create.c:307
#33 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 30 (LWP 7583):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=__cond@entry=0x7f87407d38e0) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
---Type <return> to continue, or q <return> to quit---
#2  std::condition_variable::wait (this=this@entry=0x7f87407d38e0, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009d2291 in magma::WaitGroup::WaitOnSignal (this=this@entry=0x7f87407d38a8) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/common.cc:85
#4  0x000000000096001d in magma::Magma::Impl::tryThrottleForWriteCache() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:1392
#5  0x000000000098689f in magma::Magma::Impl::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>, magma::Magma::HistoryMode) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db_write.cc:52
#6  0x0000000000986a4f in magma::Magma::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>, magma::Magma::HistoryMode) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#7  0x00000000008b9363 in MagmaMemoryTrackingProxy::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, magma::Magma::HistoryMode, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#8  0x00000000008ac110 in MagmaKVStore::saveDocs(MagmaKVStoreTransactionContext&, VB::Commit&, kvstats_ctx&, magma::Magma::HistoryMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/memcached/vbucket.h:62
#9  0x0000000000894965 in MagmaKVStore::commit(std::unique_ptr<TransactionContext, std::default_delete<TransactionContext> >, VB::Commit&) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvstore/magma-kvstore/magma-kvstore.h:808
#10 0x000000000083ad05 in EPBucket::commit(KVStoreIface&, std::unique_ptr<TransactionContext, std::default_delete<TransactionContext> >, VB::Commit&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:964
#11 0x0000000000842999 in EPBucket::flushVBucket_UNLOCKED(LockedVBucketPtr) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:836
#12 0x000000000084348f in EPBucket::flushVBucket(Vbid) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:381

#13 0x00000000006ee2e6 in Flusher::flushVB (this=0x7f87409f1100) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:293
#14 0x00000000006eeca0 in Flusher::step(GlobalTask*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:203
#15 0x0000000000ac21b9 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:98
#16 0x0000000000abb89a in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f87eb7ec650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:309
#17 0x0000000000ac356e in operator() (this=0x7f87eb7ec650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#18 CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#19 0x0000000000c216d0 in operator() (this=0x7f87eb7ec840) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#20 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f882509b500, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xaa39e93, DIE 0xaabddc8>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#21 0x0000000000c0c16a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509b500, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#22 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#23 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#24 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#25 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#26 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#27 0x0000000000abb594 in operator() (this=0x7f88255d6b80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#28 operator() (__closure=0x7f88255d6b80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#29 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#30 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#31 0x00007f8828f86ea5 in start_thread (arg=0x7f87eb7fe700) at pthread_create.c:307
#32 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 29 (LWP 7582):
#0  0x00007fffc71e16c2 in ?? ()
#1  0x0000000000000022 in ?? ()
#2  0x00007f87ebfebfc0 in ?? ()
#3  0x00007f859d6b82b0 in ?? ()
#4  0x00007f859d6b82b0 in ?? ()
#5  0x0000000000000022 in ?? ()
#6  0x00007f88268e4a2d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#7  0x00007f882717dca1 in std::chrono::_V2::steady_clock::now () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/chrono.cc:88
#8  0x00000000009ce6a9 in resize (scaleFactor=0, preserve=0, size=<optimized out>, this=0x7f87ebfebfc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/buffer.cc:108
#9  magma::Buffer::Buffer(unsigned long, unsigned long, std::function<void (long)>) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/buffer.cc:20
#10 0x0000000000a565fb in magma::MemtableIterator::Seek(magma::Slice const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/include/libmagma/slice.h:46
#11 0x0000000000a2911f in magma::LSMTree::Get(magma::Slice const&, std::shared_ptr<magma::Snapshot>&, magma::LookupBuffer&, magma::Slice&, bool&, bool, magma::ReaderStats*) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/lsm_tree.cc:1120
#12 0x00000000009b8e14 in magma::KVStore::KeyExists(magma::Slice const&, magma::LookupBuffer&, magma::ReaderStats*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/kvstore.cc:650
#13 0x00000000009c8898 in operator() (buffer=..., index=1593, __closure=0x7f87ebfec410) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/write.cc:87
#14 magma::KVStore::WriteDocs(magma::WAL*, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>, magma::Magma::HistoryMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/write.cc:130
#15 0x00000000009867fc in magma::Magma::Impl::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>, magma::Magma::HistoryMode) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#16 0x0000000000986a4f in magma::Magma::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>, magma::Magma::HistoryMode) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
---Type <return> to continue, or q <return> to quit---
#17 0x00000000008b9363 in MagmaMemoryTrackingProxy::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, magma::Magma::HistoryMode, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#18 0x00000000008ac110 in MagmaKVStore::saveDocs(MagmaKVStoreTransactionContext&, VB::Commit&, kvstats_ctx&, magma::Magma::HistoryMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/memcached/vbucket.h:62
#19 0x0000000000894965 in MagmaKVStore::commit(std::unique_ptr<TransactionContext, std::default_delete<TransactionContext> >, VB::Commit&) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvstore/magma-kvstore/magma-kvstore.h:808
#20 0x000000000083ad05 in EPBucket::commit(KVStoreIface&, std::unique_ptr<TransactionContext, std::default_delete<TransactionContext> >, VB::Commit&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:964
#21 0x0000000000842999 in EPBucket::flushVBucket_UNLOCKED(LockedVBucketPtr) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:836
#22 0x000000000084348f in EPBucket::flushVBucket(Vbid) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:381
#23 0x00000000006ee2e6 in Flusher::flushVB (this=0x7f87e84fac00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:293
#24 0x00000000006eeca0 in Flusher::step(GlobalTask*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:203
#25 0x0000000000ac21b9 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:98
#26 0x0000000000abb89a in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f87ebfed650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:309
#27 0x0000000000ac356e in operator() (this=0x7f87ebfed650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#28 CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#29 0x0000000000c216d0 in operator() (this=0x7f87ebfed840) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#30 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f882509b500, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xaa39e93, DIE 0xaabddc8>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#31 0x0000000000c0c16a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509b500, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#32 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#33 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#34 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#35 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#36 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#37 0x0000000000abb594 in operator() (this=0x7f88250f8f40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#38 operator() (__closure=0x7f88250f8f40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#39 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#40 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#41 0x00007f8828f86ea5 in start_thread (arg=0x7f87ebfff700) at pthread_create.c:307
#42 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 28 (LWP 7581):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=__cond@entry=0x7f87c41c68e0) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=this@entry=0x7f87c41c68e0, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009d2291 in magma::WaitGroup::WaitOnSignal (this=this@entry=0x7f87c41c68a8) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/common.cc:85
#4  0x000000000096001d in magma::Magma::Impl::tryThrottleForWriteCache() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:1392
#5  0x000000000098689f in magma::Magma::Impl::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>, magma::Magma::HistoryMode) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db_write.cc:52
#6  0x0000000000986a4f in magma::Magma::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>, magma::Magma::HistoryMode) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#7  0x00000000008b9363 in MagmaMemoryTrackingProxy::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, magma::Magma::HistoryMode, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#8  0x00000000008ac110 in MagmaKVStore::saveDocs(MagmaKVStoreTransactionContext&, VB::Commit&, kvstats_ctx&, magma::Magma::HistoryMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/memcached/vbucket.h:62
#9  0x0000000000894965 in MagmaKVStore::commit(std::unique_ptr<TransactionContext, std::default_delete<TransactionContext> >, VB::Commit&) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvstore/magma-kvstore/magma-kvstore.h:808
#10 0x000000000083ad05 in EPBucket::commit(KVStoreIface&, std::unique_ptr<TransactionContext, std::default_delete<TransactionContext> >, VB::Commit&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:964
#11 0x0000000000842999 in EPBucket::flushVBucket_UNLOCKED(LockedVBucketPtr) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:836
#12 0x000000000084348f in EPBucket::flushVBucket(Vbid) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:381
#13 0x00000000006ee2e6 in Flusher::flushVB (this=0x7f87c43e9300) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:293
#14 0x00000000006eeca0 in Flusher::step(GlobalTask*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:203
#15 0x0000000000ac21b9 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:98
#16 0x0000000000abb89a in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f8800fc5650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:309
#17 0x0000000000ac356e in operator() (this=0x7f8800fc5650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#18 CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#19 0x0000000000c216d0 in operator() (this=0x7f8800fc5840) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#20 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f882509b500, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xaa39e93, DIE 0xaabddc8>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#21 0x0000000000c0c16a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509b500, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
---Type <return> to continue, or q <return> to quit---
#22 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#23 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#24 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#25 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#26 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#27 0x0000000000abb594 in operator() (this=0x7f88250f8f00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#28 operator() (__closure=0x7f88250f8f00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#29 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#30 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#31 0x00007f8828f86ea5 in start_thread (arg=0x7f8800fd7700) at pthread_create.c:307
#32 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 27 (LWP 7580):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f88271808bc in __gthread_cond_wait (__mutex=<optimized out>, __cond=__cond@entry=0x7f87a41af0e0) at /tmp/deploy/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:865
#2  std::condition_variable::wait (this=this@entry=0x7f87a41af0e0, __lock=...) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00000000009d2291 in magma::WaitGroup::WaitOnSignal (this=this@entry=0x7f87a41af0a8) at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/util/common.cc:85
#4  0x000000000096001d in magma::Magma::Impl::tryThrottleForWriteCache() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db.cc:1392
#5  0x000000000098689f in magma::Magma::Impl::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>, magma::Magma::HistoryMode) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db_write.cc:52
#6  0x0000000000986a4f in magma::Magma::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>, magma::Magma::HistoryMode) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#7  0x00000000008b9363 in MagmaMemoryTrackingProxy::WriteDocs(unsigned short, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const&, unsigned int, magma::Magma::HistoryMode, std::function<void (magma::Magma::WriteOperation const&, bool, magma::Slice)>, std::function<std::pair<magma::Status, std::vector<magma::Magma::WriteOperation, std::allocator<magma::Magma::WriteOperation> > const*> ()>) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#8  0x00000000008ac110 in MagmaKVStore::saveDocs(MagmaKVStoreTransactionContext&, VB::Commit&, kvstats_ctx&, magma::Magma::HistoryMode) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/memcached/vbucket.h:62
#9  0x0000000000894965 in MagmaKVStore::commit(std::unique_ptr<TransactionContext, std::default_delete<TransactionContext> >, VB::Commit&) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvstore/magma-kvstore/magma-kvstore.h:808
#10 0x000000000083ad05 in EPBucket::commit(KVStoreIface&, std::unique_ptr<TransactionContext, std::default_delete<TransactionContext> >, VB::Commit&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:964
#11 0x0000000000842999 in EPBucket::flushVBucket_UNLOCKED(LockedVBucketPtr) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:836
#12 0x000000000084348f in EPBucket::flushVBucket(Vbid) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_bucket.cc:381
#13 0x00000000006ee2e6 in Flusher::flushVB (this=0x7f8743bee000) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:293
#14 0x00000000006eeca0 in Flusher::step(GlobalTask*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/flusher.cc:203
#15 0x0000000000ac21b9 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:98
#16 0x0000000000abb89a in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f88017c6650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:309
#17 0x0000000000ac356e in operator() (this=0x7f88017c6650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#18 CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#19 0x0000000000c216d0 in operator() (this=0x7f88017c6840) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#20 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f882509b500, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xaa39e93, DIE 0xaabddc8>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#21 0x0000000000c0c16a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509b500, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#22 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#23 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#24 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#25 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#26 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#27 0x0000000000abb594 in operator() (this=0x7f88250f8ec0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#28 operator() (__closure=0x7f88250f8ec0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#29 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#30 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#31 0x00007f8828f86ea5 in start_thread (arg=0x7f88017d8700) at pthread_create.c:307
#32 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 26 (LWP 7579):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=33322520, absSteadyTime=absSteadyTime@entry=0x7f8801fc75f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027db960)
---Type <return> to continue, or q <return> to quit---
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027db960, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f8801fc7618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027db960) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027db960, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11eb7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (
    timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=..., _ret=<synthetic pointer>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
#6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, 
    deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
#7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027db960, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#8  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a67f40, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#10 0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a67f40) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a67f00, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#12 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509a900, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#13 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#16 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#18 0x0000000000abb594 in operator() (this=0x7f88250f8dc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 operator() (__closure=0x7f88250f8dc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#21 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#22 0x00007f8828f86ea5 in start_thread (arg=0x7f8801fd9700) at pthread_create.c:307
#23 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 25 (LWP 7578):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=41715224, absSteadyTime=absSteadyTime@entry=0x7f88027c85f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dd8c8)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dd8c8, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f88027c8618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dd8c8) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dd8c8, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dd8c8, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a67f40, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a67f40) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a67f00, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509a900, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
---Type <return> to continue, or q <return> to quit---
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88250f8d40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88250f8d40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f88027da700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 24 (LWP 7577):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=280925720, absSteadyTime=absSteadyTime@entry=0x7f8810be95f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dcfb0)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dcfb0, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f8810be9618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dcfb0) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dcfb0, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11d7d in futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., 
    waitMask=4294967295, deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:164
#6  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dcfb0, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#7  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#8  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a67f40, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#9  0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a67f40) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#10 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a67f00, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#11 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509a900, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#12 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#13 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#14 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#15 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#16 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#17 0x0000000000abb594 in operator() (this=0x7f88250f8c80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#18 operator() (__closure=0x7f88250f8c80) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#20 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#21 0x00007f8828f86ea5 in start_thread (arg=0x7f8810bfb700) at pthread_create.c:307
#22 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 23 (LWP 7576):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=289318424, absSteadyTime=absSteadyTime@entry=0x7f88113ea5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027db7c8)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027db7c8, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f88113ea618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027db7c8) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027db7c8, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11eb7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (
    timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=..., _ret=<synthetic pointer>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
#6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, 
    deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
#7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027db7c8, deadline=..., opt=...)
---Type <return> to continue, or q <return> to quit---
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#8  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a67f40, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#10 0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a67f40) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a67f00, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#12 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509a900, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#13 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#16 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#18 0x0000000000abb594 in operator() (this=0x7f88250f8d00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 operator() (__closure=0x7f88250f8d00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#21 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#22 0x00007f8828f86ea5 in start_thread (arg=0x7f88113fc700) at pthread_create.c:307
#23 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 22 (LWP 7575):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=297711128, absSteadyTime=absSteadyTime@entry=0x7f8811beb5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dd280)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dd280, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f8811beb618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dd280) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dd280, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11eb7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (
    timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=..., _ret=<synthetic pointer>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
#6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, 
    deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
#7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dd280, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#8  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a67f40, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#10 0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a67f40) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a67f00, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#12 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509a900, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#13 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#16 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#18 0x0000000000abb594 in operator() (this=0x7f88250f8cc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 operator() (__closure=0x7f88250f8cc0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#21 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#22 0x00007f8828f86ea5 in start_thread (arg=0x7f8811bfd700) at pthread_create.c:307
#23 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
---Type <return> to continue, or q <return> to quit---

Thread 21 (LWP 7574):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=306103832, absSteadyTime=absSteadyTime@entry=0x7f88123ec5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027deff0)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027deff0, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f88123ec618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027deff0) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027deff0, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11eb7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (
    timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=..., _ret=<synthetic pointer>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
#6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, 
    deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
#7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027deff0, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#8  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a67f40, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#10 0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a67f40) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a67f00, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#12 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509a900, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#13 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#16 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#18 0x0000000000abb594 in operator() (this=0x7f88250f8c40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 operator() (__closure=0x7f88250f8c40) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#21 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#22 0x00007f8828f86ea5 in start_thread (arg=0x7f88123fe700) at pthread_create.c:307
#23 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 20 (LWP 7573):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=314496536, absSteadyTime=absSteadyTime@entry=0x7f8812bed5f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dc0b0)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dc0b0, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f8812bed618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dc0b0) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dc0b0, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11eb7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (
    timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=..., _ret=<synthetic pointer>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
#6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, 
    deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
#7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dc0b0, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#8  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a67f40, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#10 0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a67f40) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a67f00, time=...)
---Type <return> to continue, or q <return> to quit---
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#12 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509a900, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#13 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#16 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#18 0x0000000000abb594 in operator() (this=0x7f88250f8c00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 operator() (__closure=0x7f88250f8c00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#21 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#22 0x00007f8828f86ea5 in start_thread (arg=0x7f8812bff700) at pthread_create.c:307
#23 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 19 (LWP 7572):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x0000000000c03e8d in nativeFutexWaitImpl (waitMask=waitMask@entry=416171544, absSteadyTime=absSteadyTime@entry=0x7f8818ce45f8, absSystemTime=absSystemTime@entry=0x0, expected=expected@entry=2, addr=addr@entry=0x7f88027dcbd8)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:123
#2  folly::detail::futexWaitImpl (futex=futex@entry=0x7f88027dcbd8, expected=expected@entry=2, absSystemTime=absSystemTime@entry=0x0, absSteadyTime=absSteadyTime@entry=0x7f8818ce4618, waitMask=waitMask@entry=4294967295)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex.cpp:254
#3  0x0000000000c0d74a in futexWaitImpl<std::atomic<unsigned int> const, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (waitMask=4294967295, deadline=..., expected=2, 
    futex=0x7f88027dcbd8) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:85
#4  folly::detail::futexWaitUntil<std::atomic<unsigned int>, std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (futex=futex@entry=0x7f88027dcbd8, expected=expected@entry=2, deadline=..., 
    waitMask=waitMask@entry=4294967295) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/Futex-inl.h:123
#5  0x0000000000c11eb7 in futexWaitPreIdle<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > >, std::chrono::duration<long, std::ratio<1, 1000000000> > > (
    timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, deadline=..., expected=2, fut=..., _ret=<synthetic pointer>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:194
#6  futexWaitUntil<std::atomic<unsigned int>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > > (timeoutVariationFrac=0.5, stackToRetain=1024, idleTimeout=..., waitMask=4294967295, 
    deadline=..., expected=2, fut=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/detail/MemoryIdler.h:151
#7  folly::SaturatingSemaphore<true, std::atomic>::tryWaitSlow<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x7f88027dcbd8, deadline=..., opt=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:318
#8  0x0000000000c123e6 in try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (opt=..., deadline=..., this=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/SaturatingSemaphore.h:179
#9  folly::detail::LifoSemBase<folly::SaturatingSemaphore<true, std::atomic>, std::atomic>::try_wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > > (this=this@entry=0x1a67f40, deadline=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:521
#10 0x0000000000c14ea0 in try_wait_for<long, std::ratio<1, 1000> > (timeout=<synthetic pointer>, this=0x1a67f40) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/synchronization/LifoSem.h:498
#11 folly::UnboundedBlockingQueue<folly::CPUThreadPoolExecutor::CPUTask>::try_take_for (this=0x1a67f00, time=...)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/task_queue/UnboundedBlockingQueue.h:41
#12 0x0000000000c0c0f7 in folly::CPUThreadPoolExecutor::threadRun (this=0x7f882509a900, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:243
#13 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#14 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#15 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#16 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#17 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#18 0x0000000000abb594 in operator() (this=0x7f88250f8b00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#19 operator() (__closure=0x7f88250f8b00) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#20 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#21 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#22 0x00007f8828f86ea5 in start_thread (arg=0x7f8818cf6700) at pthread_create.c:307
#23 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 18 (LWP 7571):
#0  0x000000000081137e in enqueue<Vbid&> (updateSpinCutoff=<optimized out>, spinCutoff=..., turn=<optimized out>, this=<optimized out>) at /opt/gcc-10.2.0/include/c++/10.2.0/new:175
#1  enqueueWithTicketBase<Vbid&> (stride=<optimized out>, cap=<optimized out>, slots=<optimized out>, ticket=<optimized out>, this=<optimized out>)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/MPMCQueue.h:1308
#2  write<Vbid&> (this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/MPMCQueue.h:859
#3  VBReadyQueue::pushUnique(Vbid) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vb_ready_queue.cc:82
---Type <return> to continue, or q <return> to quit---


#4  0x00000000007feff0 in DcpProducer::notifyStreamReady (this=0x7f8744ced080, vbucket=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/producer.cc:1895
#5  0x00000000008dcb6a in ActiveStream::notifyStreamReady(bool, DcpProducer*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/active_stream.cc:2343
#6  0x00000000008dccd0 in ActiveStream::notifySeqnoAvailable (this=<optimized out>, producer=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/active_stream.cc:1648
#7  0x0000000000803212 in DcpProducer::notifySeqnoAvailable(Vbid, unsigned long, SyncWriteOperation) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/producer.cc:1649
#8  0x00000000007f722c in DcpConnMap::notifyVBConnections(Vbid, unsigned long, SyncWriteOperation) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/dcpconnmap.cc:407
#9  0x000000000073cda8 in notifyNewSeqno (notifyCtx=..., this=0x7f8745656200) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.h:448
#10 VBucket::set(Item&, CookieIface const*, EventuallyPersistentEngine&, std::function<cb::StoreIfStatus (std::optional<item_info> const&, cb::vbucket_info)>, Collections::VB::CachingReadHandle const&) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.cc:1708
#11 0x0000000000704ef4 in KVBucket::set(Item&, CookieIface const*, std::function<cb::StoreIfStatus (std::optional<item_info> const&, cb::vbucket_info)>) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#12 0x00000000006c0bef in EventuallyPersistentEngine::storeIfInner(CookieIface const*, Item&, unsigned long, StoreSemantics, std::function<cb::StoreIfStatus (std::optional<item_info> const&, cb::vbucket_info)> const&, bool) ()
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#13 0x00000000006d1cad in EventuallyPersistentEngine::store_if(CookieIface const&, ItemIface&, unsigned long, StoreSemantics, std::function<cb::StoreIfStatus (std::optional<item_info> const&, cb::vbucket_info)> const&, std::optional<cb::durability::Requirements> const&, DocumentState, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:122

#14 0x0000000000595bf9 in bucket_store_if(Cookie&, gsl::not_null<ItemIface*>, unsigned long, StoreSemantics, std::function<cb::StoreIfStatus (std::optional<item_info> const&, cb::vbucket_info)>, std::optional<cb::durability::Requirements>, DocumentState, bool) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/engine_wrapper.cc:161
#15 0x000000000064a5cb in MutationCommandContext::storeItem() () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#16 0x000000000064ae70 in MutationCommandContext::step() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/mutation_context.cc:53

#17 0x000000000065e8a1 in SteppableCommandContext::drive() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/steppable_command_context.cc:36


#18 0x000000000060f67b in Cookie::doExecute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/mcbp/protocol/header.h:110
#19 0x000000000060f710 in Cookie::execute (this=this@entry=0x7f8712227380, useStartTime=useStartTime@entry=false) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/cookie.cc:168
#20 0x00000000005f0282 in Connection::processNotifiedCookie(Cookie&, cb::engine_errc) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:674

#21 0x00000000005be604 in operator() (__closure=0x7f88005dced0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/cookie.h:167
#22 void folly::detail::function::FunctionTraits<void ()>::callSmall<notifyIoComplete(Cookie&, cb::engine_errc)::{lambda()#1}>(folly::detail::function::Data&) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:387
#23 0x0000000000c3017a in operator() (this=0x7f88005dced0) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#24 messageAvailable (msg=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xab0ce5b, DIE 0xab7ac9a>, this=0x7f88255e5d00)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:137
#25 folly::NotificationQueue<folly::Function<void ()> >::Consumer::consumeMessages(bool, unsigned long*) (this=0x7f88255e5d00, isDrain=<optimized out>, numConsumed=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/NotificationQueue.h:729
#26 0x00007f8828258f9a in event_persist_closure (ev=<optimized out>, base=0x7f882508db00) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1629
#27 event_process_active_single_queue (base=base@entry=0x7f882508db00, max_to_process=max_to_process@entry=2147483647, endtime=endtime@entry=0x0, activeq=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1688
#28 0x00007f882825953f in event_process_active (base=0x7f882508db00) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1789
#29 event_base_loop (base=0x7f882508db00, flags=1) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:2012
#30 0x0000000000c2adb7 in folly::EventBase::loopBody (this=this@entry=0x7f8825288930, flags=flags@entry=0, ignoreKeepAlive=ignoreKeepAlive@entry=false)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
#31 0x0000000000c2b286 in folly::EventBase::loop (this=this@entry=0x7f8825288930) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#32 0x0000000000c2cc46 in folly::EventBase::loopForever (this=this@entry=0x7f8825288930) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#33 0x00000000005bd759 in worker_libevent (arg=0x7f8825288920) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:257
#34 0x0000000000baf899 in run (this=0x7f88250f0840) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#35 platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#36 0x00007f8828f86ea5 in start_thread (arg=0x7f88194f7700) at pthread_create.c:307
#37 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 17 (LWP 7570):
#0  0x00007f88268cf0e3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f88282623b5 in epoll_dispatch (base=0x7f882508d800, tv=<optimized out>) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
#2  0x00007f8828259366 in event_base_loop (base=0x7f882508d800, flags=1) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
#3  0x0000000000c2adb7 in folly::EventBase::loopBody (this=this@entry=0x7f8825287d00, flags=flags@entry=0, ignoreKeepAlive=ignoreKeepAlive@entry=false)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
#4  0x0000000000c2b286 in folly::EventBase::loop (this=this@entry=0x7f8825287d00) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#5  0x0000000000c2cc46 in folly::EventBase::loopForever (this=this@entry=0x7f8825287d00) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#6  0x00000000005bd759 in worker_libevent (arg=0x7f8825287cf0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:257
#7  0x0000000000baf899 in run (this=0x7f88255b7550) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f8828f86ea5 in start_thread (arg=0x7f8819cf8700) at pthread_create.c:307
#10 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 16 (LWP 7569):
#0  CheckpointManager::getQueuedItemsMemUsage (this=0x7f873424d8c0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/checkpoint_manager.cc:1574
#1  0x00000000007362bc in VBucket::getCMQueuedItemsMemUsage (this=this@entry=0x7f873290b600) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.cc:300
#2  0x0000000000733a0f in VBucketCountVisitor::visitBucket (this=0x7f86f798b240, vb=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vb_count_visitor.cc:37
#3  0x0000000000733cc0 in VBucketStatAggregator::visitBucket (this=<optimized out>, vb=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vb_count_visitor.cc:112
#4  0x00000000007034fa in KVBucket::visit(VBucketVisitor&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kv_bucket.cc:2383
#5  0x00000000007142ac in KVBucket::getAggregatedVBucketStats(BucketStatCollector const&, cb::prometheus::Cardinality) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kv_bucket.cc:1333
---Type <return> to continue, or q <return> to quit---
#6  0x00000000006d2710 in EventuallyPersistentEngine::doEngineStatsLowCardinality(BucketStatCollector const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:3190
#7  0x00000000006d493b in doEngineStats (collector=..., this=0x7f8735000000) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:5104
#8  EventuallyPersistentEngine::getStats(void const*, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, std::function<void (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*)> const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:5104
#9  0x00000000006d5719 in EventuallyPersistentEngine::get_stats(CookieIface const&, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, std::function<void (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*)> const&) () at /opt/gcc-10.2.0/include/c++/10.2.0/new:175
#10 0x0000000000597778 in bucket_get_stats(Cookie&, std::basic_string_view<char, std::char_traits<char> >, cb::sized_buffer<unsigned char const>, std::function<void (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*)> const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/engine_wrapper.cc:372


#11 0x00000000006581fa in stat_all_stats(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, Cookie&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/stats_context.cc:472
#12 0x000000000065913f in StatsCommandContext::doStats() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/stats_context.cc:758
#13 0x000000000065a770 in StatsCommandContext::step() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/stats_context.cc:668
#14 0x000000000065e8a1 in SteppableCommandContext::drive() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/steppable_command_context.cc:36
#15 0x000000000060f67b in Cookie::doExecute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/mcbp/protocol/header.h:110
#16 0x000000000060f710 in Cookie::execute (this=this@entry=0x7f8709e2cf00, useStartTime=useStartTime@entry=true) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/cookie.cc:168
#17 0x00000000005f0c33 in Connection::executeCommandPipeline() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/cookie.h:472
#18 0x00000000005f0ee2 in Connection::executeCommandsCallback() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:801
#19 0x00000000005f156b in Connection::rw_callback(bufferevent*, void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:950
#20 0x00007f882824fd7e in bufferevent_run_deferred_callbacks_unlocked (cb=<optimized out>, arg=0x7f87431edd80) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/bufferevent.c:208
#21 0x00007f8828258cf1 in event_process_active_single_queue (base=base@entry=0x7f882508d500, max_to_process=max_to_process@entry=2147483647, endtime=endtime@entry=0x0, activeq=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1726
#22 0x00007f882825953f in event_process_active (base=0x7f882508d500) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1789
#23 event_base_loop (base=0x7f882508d500, flags=1) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:2012
#24 0x0000000000c2adb7 in folly::EventBase::loopBody (this=this@entry=0x7f88252870d0, flags=flags@entry=0, ignoreKeepAlive=ignoreKeepAlive@entry=false)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
#25 0x0000000000c2b286 in folly::EventBase::loop (this=this@entry=0x7f88252870d0) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#26 0x0000000000c2cc46 in folly::EventBase::loopForever (this=this@entry=0x7f88252870d0) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#27 0x00000000005bd759 in worker_libevent (arg=0x7f88252870c0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:257
#28 0x0000000000baf899 in run (this=0x7f88250f0870) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#29 platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#30 0x00007f8828f86ea5 in start_thread (arg=0x7f881affd700) at pthread_create.c:307
#31 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 15 (LWP 7568):
#0  0x00007f88268cf0e3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f88282623b5 in epoll_dispatch (base=0x7f882508d200, tv=<optimized out>) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
#2  0x00007f8828259366 in event_base_loop (base=0x7f882508d200, flags=1) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
#3  0x0000000000c2adb7 in folly::EventBase::loopBody (this=this@entry=0x7f88252864a0, flags=flags@entry=0, ignoreKeepAlive=ignoreKeepAlive@entry=false)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
#4  0x0000000000c2b286 in folly::EventBase::loop (this=this@entry=0x7f88252864a0) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#5  0x0000000000c2cc46 in folly::EventBase::loopForever (this=this@entry=0x7f88252864a0) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#6  0x00000000005bd759 in worker_libevent (arg=0x7f8825286490) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:257
#7  0x0000000000baf899 in run (this=0x7f88250f08a0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f8828f86ea5 in start_thread (arg=0x7f881b7fe700) at pthread_create.c:307
#10 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 14 (LWP 7567):
#0  0x00007fffc71e16c2 in ?? ()
#1  0x00007f87a418fbf8 in ?? ()
#2  0x0000000000000001 in ?? ()
#3  0x00007f8739800000 in ?? ()
#4  0x00007f87346a6600 in ?? ()
#5  0x00007f881bfeca90 in ?? ()
#6  0x00007f88268e4a2d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#7  0x00007f882717dca1 in std::chrono::_V2::steady_clock::now () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/chrono.cc:88
#8  0x00000000006c083f in ScopeTimer2<std::tuple<Hdr1sfMicroSecHistogram&>, std::tuple<const CookieIface*&, cb::tracing::Code&&> > (args2=<optimized out>, args1=<optimized out>, this=0x7f881bfec920)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/trace_helpers.h:18
#9  EventuallyPersistentEngine::storeIfInner(CookieIface const*, Item&, unsigned long, StoreSemantics, std::function<cb::StoreIfStatus (std::optional<item_info> const&, cb::vbucket_info)> const&, bool) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:2603
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 13 (LWP 7566):
#0  0x00007f882824f183 in bufferevent_write (bufev=<optimized out>, data=<optimized out>, size=<optimized out>) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/bufferevent.c:454
#1  0x00000000005e3dd3 in Connection::copyToOutputStream(gsl::span<std::basic_string_view<char, std::char_traits<char> > >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:1278
#2  0x00000000006592ba in copyToOutputStream (data3=..., data2=..., data1=..., this=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.h:396
---Type <return> to continue, or q <return> to quit---
#3  append_stats(std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/stats_context.cc:100

#4  0x00000000006d712f in operator() (__args#2=<optimized out>, __args#1=..., __args#0=..., this=<optimized out>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#5  __invoke_impl<void, const std::function<void(std::basic_string_view<char>, std::basic_string_view<char>, void const*)>&, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*> (
    __f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:60
#6  __invoke<const std::function<void(std::basic_string_view<char>, std::basic_string_view<char>, void const*)>&, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*> (__fn=...)
    at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:95
#7  operator()<std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*> (this=0x7f8820ce3868) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/refwrap.h:349
#8  operator()<std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*> (this=0x7f8820ce3868)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:346
#9  __invoke_impl<void, <lambda(auto:53&&)> [with auto:53 = std::reference_wrapper<const std::function<void(std::basic_string_view<char>, std::basic_string_view<char>, void const*)> >]::<lambda(auto:54&& ...)>&, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*> (__f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:60
#10 __invoke_r<void, <lambda(auto:53&&)> [with auto:53 = std::reference_wrapper<const std::function<void(std::basic_string_view<char>, std::basic_string_view<char>, void const*)> >]::<lambda(auto:54&& ...)>&, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*> (__fn=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:110
#11 _ZNSt17_Function_handlerIFvSt17basic_string_viewIcSt11char_traitsIcEES3_PKvEZNK19makeExitBorderGuardMUlOT_E_clISt17reference_wrapperIKSt8functionIS6_EEEEDaS8_EUlDpOT_E_E9_M_invokeERKSt9_Any_dataOS3_SO_OS5_ (__functor=..., 
    __args#0=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0x2a01a14, DIE 0x2bdc4d9>, __args#1=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0x2a01a14, DIE 0x2bdc4ea>, 
    __args#2=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0x2a01a14, DIE 0x2bdc4fb>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:291
#12 0x0000000000ad7353 in operator() (__args#2=<optimized out>, __args#1=..., __args#0=..., this=0x7f8820ce3868) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#13 CBStatCollector::addStat(cb::stats::StatDef const&, std::basic_string_view<char, std::char_traits<char> >, std::unordered_map<char const*, std::basic_string_view<char, std::char_traits<char> >, std::hash<std::basic_string_view<char, std::char_traits<char> > >, std::equal_to<std::basic_string_view<char, std::char_traits<char> > >, std::allocator<std::pair<char const* const, std::basic_string_view<char, std::char_traits<char> > > > > const&) const ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/statistics/cbstat_collector.cc:43
#14 0x0000000000ad634c in CBStatCollector::addStat(cb::stats::StatDef const&, unsigned long, std::unordered_map<char const*, std::basic_string_view<char, std::char_traits<char> >, std::hash<std::basic_string_view<char, std::char_traits<char> > >, std::equal_to<std::basic_string_view<char, std::char_traits<char> > >, std::allocator<std::pair<char const* const, std::basic_string_view<char, std::char_traits<char> > > > > const&) const ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/statistics/cbstat_collector.cc:66
#15 0x00000000006d9789 in addStat<std::basic_string_view<char>&, unsigned long> (k=<synthetic pointer>, v=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0x2a01a14, DIE 0x2bfdb1e>, k=<synthetic pointer>, 
    v=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0x2a01a14, DIE 0x2bfdb1e>, this=0x7f8820ce3860) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/char_traits.h:322
#16 add_casted_stat<unsigned long>(std::basic_string_view<char, std::char_traits<char> >, unsigned long&&, std::function<void (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*)> const&, void const*) (k=..., v=v@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0x2a01a14, DIE 0x2bfd8b9>, add_stat=..., cookie=0x7f8820ce38c0, cookie@entry=0x7f873cd08c00)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/statistics/cbstat_collector.h:128
#17 0x00000000006c2019 in EventuallyPersistentEngine::addSeqnoVbStats(CookieIface const*, std::function<void (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*)> const&, std::shared_ptr<VBucket> const&) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/char_traits.h:357
#18 0x00000000006c6745 in EventuallyPersistentEngine::doSeqnoStats(CookieIface const*, std::function<void (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*)> const&, char const*, int) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:4782
#19 0x00000000006d4ac3 in EventuallyPersistentEngine::getStats(void const*, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, std::function<void (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*)> const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:5147
#20 0x00000000006d5719 in EventuallyPersistentEngine::get_stats(CookieIface const&, std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, std::function<void (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*)> const&) () at /opt/gcc-10.2.0/include/c++/10.2.0/new:175
#21 0x0000000000597778 in bucket_get_stats(Cookie&, std::basic_string_view<char, std::char_traits<char> >, cb::sized_buffer<unsigned char const>, std::function<void (std::basic_string_view<char, std::char_traits<char> >, std::basic_string_view<char, std::char_traits<char> >, void const*)> const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/engine_wrapper.cc:372
#22 0x00000000006590df in StatsCommandContext::doStats() () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/char_traits.h:322
#23 0x000000000065a770 in StatsCommandContext::step() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/stats_context.cc:668
#24 0x000000000065e8a1 in SteppableCommandContext::drive() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/steppable_command_context.cc:36
#25 0x000000000060f67b in Cookie::doExecute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/mcbp/protocol/header.h:110
#26 0x000000000060f710 in Cookie::execute (this=this@entry=0x7f873cd08c00, useStartTime=useStartTime@entry=true) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/cookie.cc:168
#27 0x00000000005f0c33 in Connection::executeCommandPipeline() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/cookie.h:472
#28 0x00000000005f0ee2 in Connection::executeCommandsCallback() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:801
#29 0x00000000005f156b in Connection::rw_callback(bufferevent*, void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:950
#30 0x00007f882824fd7e in bufferevent_run_deferred_callbacks_unlocked (cb=<optimized out>, arg=0x7f873cd09380) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/bufferevent.c:208
#31 0x00007f8828258cf1 in event_process_active_single_queue (base=base@entry=0x7f882508cc00, max_to_process=max_to_process@entry=2147483647, endtime=endtime@entry=0x0, activeq=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1726
#32 0x00007f882825953f in event_process_active (base=0x7f882508cc00) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1789
#33 event_base_loop (base=0x7f882508cc00, flags=1) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:2012
#34 0x0000000000c2adb7 in folly::EventBase::loopBody (this=this@entry=0x7f8825284c40, flags=flags@entry=0, ignoreKeepAlive=ignoreKeepAlive@entry=false)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
#35 0x0000000000c2b286 in folly::EventBase::loop (this=this@entry=0x7f8825284c40) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#36 0x0000000000c2cc46 in folly::EventBase::loopForever (this=this@entry=0x7f8825284c40) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#37 0x00000000005bd759 in worker_libevent (arg=0x7f8825284c30) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:257
#38 0x0000000000baf899 in run (this=0x7f88255b73d0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#39 platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#40 0x00007f8828f86ea5 in start_thread (arg=0x7f8820cf6700) at pthread_create.c:307
#41 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 12 (LWP 7565):
#0  0x00000000006fb016 in store (__m=std::memory_order_relaxed, __i=0, this=0x7f86b4979c08) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/atomic.h:115
#1  RefCount (value=0, this=0x7f86b4979c08) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/atomic.h:115
#2  RCValue (this=0x7f86b4979c08) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/include/platform/atomic.h:139
---Type <return> to continue, or q <return> to quit---
#3  Item::Item(DocKey const&, unsigned int, long, SingleThreadedRCPtr<Blob, TaggedPtr<Blob>, Blob::Deleter> const&, unsigned char, unsigned long, long, Vbid, unsigned long) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/item.cc:48

#4  0x000000000072d94e in make_unique<Item, SerialisedDocKey const&, unsigned int, long, SingleThreadedRCPtr<Blob, TaggedPtr<Blob>, Blob::Deleter> const, unsigned char, unsigned long, cb::RelaxedAtomic<long> const&, Vbid&, unsigned long> ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/memcached/dockey.h:341
#5  StoredValue::toItemBase(Vbid, StoredValue::HideLockedCas, StoredValue::IncludeValue) const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/stored-value.cc:318
#6  0x000000000072da48 in StoredValue::toItem(Vbid, StoredValue::HideLockedCas, StoredValue::IncludeValue, std::optional<cb::durability::Requirements>) const ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/stored-value.cc:190
#7  0x000000000073ff88 in VBucket::queueDirty(HashTable::HashBucketLock const&, StoredValue&, VBQueueItemCtx const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.h:448
#8  0x0000000000848066 in EPVBucket::addNewStoredValue (this=0x7f8742faa200, hbl=..., itm=..., queueItmCtx=..., genRevSeqno=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:716
#9  0x000000000073a5ca in VBucket::processSetInner(HashTable::FindUpdateResult&, StoredValue*&, Item&, unsigned long, bool, bool, VBQueueItemCtx const&, cb::StoreIfStatus, bool) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/hash_table.h:741
#10 0x000000000073abb4 in VBucket::processSet(HashTable::FindUpdateResult&, StoredValue*&, Item&, unsigned long, bool, bool, VBQueueItemCtx const&, cb::StoreIfStatus, bool) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.cc:3414
#11 0x000000000073d89f in VBucket::setWithMeta(Item&, unsigned long, unsigned long*, CookieIface const*, EventuallyPersistentEngine&, CheckConflicts, bool, GenerateBySeqno, GenerateCas, Collections::VB::CachingReadHandle const&) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.cc:2118
#12 0x0000000000706f38 in KVBucket::setWithMeta(Item&, unsigned long, unsigned long*, CookieIface const*, cb::bitset<4ul, vbucket_state_t, PermittedVBStatesMap>, CheckConflicts, bool, GenerateBySeqno, GenerateCas, ExtendedMetaData*) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kv_bucket.cc:1786
#13 0x0000000000907ec8 in PassiveStream::processMessage(MutationConsumerMessage*, PassiveStream::MessageType) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/response.h:478
#14 0x0000000000908f74 in processMutation (mutation=<optimized out>, this=0x7f874374df10) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/passive_stream.cc:752
#15 PassiveStream::messageReceived(std::unique_ptr<DcpResponse, std::default_delete<DcpResponse> >, UpdateFlowControl&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/passive_stream.cc:366
#16 0x00000000008fc3bc in DcpConsumer::lookupStreamAndDispatchMessage(UpdateFlowControl&, Vbid, unsigned int, std::unique_ptr<DcpResponse, std::default_delete<DcpResponse> >) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/consumer.cc:1911
#17 0x00000000008fc5cc in DcpConsumer::processMutationOrPrepare(Vbid, unsigned int, DocKey const&, SingleThreadedRCPtr<Item, Item*, std::default_delete<Item> >, cb::sized_buffer<unsigned char const>, unsigned long) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/consumer.cc:487
#18 0x00000000008fc757 in DcpConsumer::mutation(unsigned int, DocKey const&, cb::sized_buffer<unsigned char const>, unsigned long, unsigned char, unsigned long, Vbid, unsigned int, unsigned long, unsigned long, unsigned int, unsigned int, cb::sized_buffer<unsigned char const>, unsigned char) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/memcached/dockey.h:382
#19 0x00000000006b656f in EventuallyPersistentEngine::mutation(CookieIface const&, unsigned int, DocKey const&, cb::sized_buffer<unsigned char const>, unsigned long, unsigned char, unsigned long, Vbid, unsigned int, unsigned long, unsigned long, unsigned int, unsigned int, cb::sized_buffer<unsigned char const>, unsigned char) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:6724
#20 0x000000000059940d in dcpMutation(Cookie&, unsigned int, DocKey const&, cb::sized_buffer<unsigned char const>, unsigned long, unsigned char, unsigned long, Vbid, unsigned int, unsigned long, unsigned long, unsigned int, unsigned int, cb::sized_buffer<unsigned char const>, unsigned char) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/engine_wrapper.cc:591
#21 0x000000000063c2e9 in do_dcp_mutation (cookie=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/memcached/dockey.h:341
#22 dcp_mutation_executor(Cookie&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/protocol/mcbp/dcp_mutation.cc:65
#23 0x000000000060f67b in Cookie::doExecute() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/mcbp/protocol/header.h:110
#24 0x000000000060f710 in Cookie::execute (this=this@entry=0x7f8818262200, useStartTime=useStartTime@entry=true) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/cookie.cc:168
#25 0x00000000005f0c33 in Connection::executeCommandPipeline() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/cookie.h:472
#26 0x00000000005f0ee2 in Connection::executeCommandsCallback() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:801
#27 0x00000000005f156b in Connection::rw_callback(bufferevent*, void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/connection.cc:950
#28 0x00007f882824fd7e in bufferevent_run_deferred_callbacks_unlocked (cb=<optimized out>, arg=0x7f8818278080) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/bufferevent.c:208
#29 0x00007f8828258cf1 in event_process_active_single_queue (base=base@entry=0x7f882508c900, max_to_process=max_to_process@entry=2147483647, endtime=endtime@entry=0x0, activeq=<optimized out>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1726
#30 0x00007f882825953f in event_process_active (base=0x7f882508c900) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1789
#31 event_base_loop (base=0x7f882508c900, flags=1) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:2012
#32 0x0000000000c2adb7 in folly::EventBase::loopBody (this=this@entry=0x7f8825284010, flags=flags@entry=0, ignoreKeepAlive=ignoreKeepAlive@entry=false)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
#33 0x0000000000c2b286 in folly::EventBase::loop (this=this@entry=0x7f8825284010) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#34 0x0000000000c2cc46 in folly::EventBase::loopForever (this=this@entry=0x7f8825284010) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#35 0x00000000005bd759 in worker_libevent (arg=0x7f8825284000) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/thread.cc:257
#36 0x0000000000baf899 in run (this=0x7f88255b72b0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#37 platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#38 0x00007f8828f86ea5 in start_thread (arg=0x7f88214f7700) at pthread_create.c:307
#39 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 11 (LWP 7564):
#0  0x00007f88268c3ddd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x0000000000aecc58 in master_thread_run (ctx=0x1a62a00) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19291
#2  master_thread (thread_func_param=0x1a62a00) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19386
#3  0x00007f8828f86ea5 in start_thread (arg=0x7f88234fb700) at pthread_create.c:307
#4  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 10 (LWP 7563):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x0000000000af5ceb in consume_socket (thread_index=<optimized out>, sp=0x1a61b98, ctx=0x1a62a00)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18846
#2  worker_thread_run (conn=0x1a612a8) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18987
#3  worker_thread (thread_func_param=0x1a612a8) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19145
---Type <return> to continue, or q <return> to quit---
#4  0x00007f8828f86ea5 in start_thread (arg=0x7f8822cfa700) at pthread_create.c:307
#5  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 9 (LWP 7562):
#0  0x00007f8828f88d5d in __GI___pthread_mutex_lock (mutex=0x7f871a3c60a8) at ../nptl/pthread_mutex_lock.c:78
#1  0x00000000009f7aac in __gthread_mutex_lock (__mutex=0x7f871a3c60a8) at /opt/gcc-10.2.0/include/c++/10.2.0/x86_64-pc-linux-gnu/bits/gthr-default.h:749
#2  lock (this=0x7f871a3c60a8) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_mutex.h:100
#3  lock_guard (__m=..., this=<synthetic pointer>) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_mutex.h:159
#4  magma::LSMTree::GetStats() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/lsm/stats.cc:109


#5  0x000000000099f2ea in magma::KVStore::GetKVStoreStats() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/kvstore/stats.cc:42


#6  0x000000000097007a in magma::Magma::GetKVStoreStats(unsigned short) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/magma/magma/db_stats.cc:462
#7  0x00000000008b85b6 in MagmaMemoryTrackingProxy::GetStatsForDbInfo(unsigned short) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kvstore/magma-kvstore/magma-memory-tracking-proxy.cc:296
#8  0x0000000000897803 in MagmaKVStore::getDbFileInfo(Vbid) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/include/memcached/vbucket.h:62
#9  0x00000000008484d6 in EPVBucket::getHistoryDiskSize() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.h:448
#10 0x0000000000733bfe in VBucketCountVisitor::visitBucket (this=0x7f870a09ec40, vb=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vb_count_visitor.cc:92
#11 0x0000000000733cc0 in VBucketStatAggregator::visitBucket (this=<optimized out>, vb=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vb_count_visitor.cc:112
#12 0x00000000007034fa in KVBucket::visit(VBucketVisitor&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kv_bucket.cc:2383
#13 0x00000000007142ac in KVBucket::getAggregatedVBucketStats(BucketStatCollector const&, cb::prometheus::Cardinality) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kv_bucket.cc:1333
#14 0x00000000006d2710 in EventuallyPersistentEngine::doEngineStatsLowCardinality(BucketStatCollector const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:3190
#15 0x00000000006d61e1 in EventuallyPersistentEngine::get_prometheus_stats(BucketStatCollector const&, cb::prometheus::Cardinality) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_engine.cc:399

#16 0x00000000005b7e2d in operator() (bucket=..., __closure=0x7f881a4e3390) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stats.cc:249
#17 __invoke_impl<bool, server_prometheus_stats(const StatCollector&, cb::prometheus::Cardinality)::<lambda(Bucket&)>&, Bucket&> (__f=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:60
#18 __invoke_r<bool, server_prometheus_stats(const StatCollector&, cb::prometheus::Cardinality)::<lambda(Bucket&)>&, Bucket&> (__fn=...) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/invoke.h:113
#19 std::_Function_handler<bool (Bucket&), server_prometheus_stats(StatCollector const&, cb::prometheus::Cardinality)::{lambda(Bucket&)#1}>::_M_invoke(std::_Any_data const&, Bucket&) () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:291
#20 0x00000000005d02a4 in operator() (__args#0=..., this=0x7f881a4e3390) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248
#21 BucketManager::forEach(std::function<bool (Bucket&)>) (this=<optimized out>, fn=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/buckets.cc:365
#22 0x00000000005b6fbc in server_prometheus_stats(StatCollector const&, cb::prometheus::Cardinality) () at /opt/gcc-10.2.0/include/c++/10.2.0/new:175

#23 0x0000000000ae344a in operator() (__args#1=<optimized out>, __args#0=..., this=0x7f88250f82a0) at /opt/gcc-10.2.0/include/c++/10.2.0/bits/std_function.h:248

#24 cb::prometheus::MetricServer::KVCollectable::Collect (this=0x7f88250f8290) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/statistics/prometheus.cc:122
#25 0x0000000000afb74b in prometheus::detail::CollectMetrics (collectables=...) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/pull/src/metrics_collector.cc:18
#26 0x0000000000afa788 in prometheus::detail::MetricsHandler::handleGet (this=0x7f88255e4800, conn=0x1a608c0)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/pull/src/handler.cc:129
#27 0x0000000000ae8927 in CivetServer::requestHandler (conn=0x1a608c0, cbdata=0x7f88255e4800)
    at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/CivetServer.cpp:152
#28 0x0000000000af56cd in handle_request (conn=conn@entry=0x1a608c0) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:14657
#29 0x0000000000af6729 in process_new_connection (conn=0x1a608c0) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:18673
#30 worker_thread_run (conn=0x1a608c0) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19090
#31 worker_thread (thread_func_param=0x1a608c0) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/prometheus-cpp/prometheus-cpp-prefix/src/prometheus-cpp/3rdparty/civetweb/src/civetweb.c:19145
#32 0x00007f8828f86ea5 in start_thread (arg=0x7f881a4f9700) at pthread_create.c:307
#33 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (LWP 7551):

#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x000000000068c217 in __gthread_cond_timedwait (__abs_timeout=0x7f8821ce69b0, __mutex=<optimized out>, __cond=0x7f882511d3f8) at /opt/gcc-10.2.0/include/c++/10.2.0/x86_64-pc-linux-gnu/bits/gthr-default.h:872
#2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__lock=..., __lock=..., __atime=<synthetic pointer>, this=0x7f882511d3f8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:232
#3  wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f882511d3f8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:141
#4  wait_for<long, std::ratio<1> > (__rtime=..., __rtime=..., __lock=..., this=0x7f882511d3f8) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:172
#5  AuditImpl::consume_events() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/auditd/src/audit.cc:414
#6  0x0000000000baf899 in run (this=0x7f88255b6fb0) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#7  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#8  0x00007f8828f86ea5 in start_thread (arg=0x7f8821cf8700) at pthread_create.c:307
#9  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (LWP 7545):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00000000005ffe06 in __gthread_cond_timedwait (__abs_timeout=0x7f88224e7980, __mutex=0x7f882509f350, __cond=0x7f882509f378) at /opt/gcc-10.2.0/include/c++/10.2.0/x86_64-pc-linux-gnu/bits/gthr-default.h:872
#2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__lock=<synthetic pointer>, __lock=<synthetic pointer>, __atime=<synthetic pointer>, this=0x7f882509f378) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:232
#3  wait_until<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=<synthetic pointer>, this=0x7f882509f378) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:141
#4  wait_for<long, std::ratio<1, 1000000000> > (__rtime=<synthetic pointer>, __lock=<synthetic pointer>, this=0x7f882509f378) at /opt/gcc-10.2.0/include/c++/10.2.0/condition_variable:172
#5  ExternalAuthManagerThread::run() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/external_auth_manager_thread.cc:91
#6  0x0000000000bc7593 in Couchbase::Thread::thread_entry() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/thread.cc:38
#7  0x0000000000baf899 in run (this=0x7f88255b7010) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#8  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#9  0x00007f8828f86ea5 in start_thread (arg=0x7f88224f9700) at pthread_create.c:307
#10 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
---Type <return> to continue, or q <return> to quit---

Thread 6 (LWP 7541):
#0  0x00007f88268c3ddd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00000000005b8461 in get_command (buffsize=80, buffer=0x7f8823cea990 "") at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:57
#2  check_stdin_thread (arg=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/stdin_check.cc:98
#3  0x0000000000baf899 in run (this=0x7f88255b6c50) at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:51
#4  platform_thread_wrap(void*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/platform/src/cb_pthreads.cc:64
#5  0x00007f8828f86ea5 in start_thread (arg=0x7f8823cfc700) at pthread_create.c:307
#6  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (LWP 7540):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x0000000000b7678a in __gthread_cond_timedwait (__abs_timeout=0x7f88244eb9b0, __mutex=<optimized out>, __cond=0x7f88255b82d8) at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
#2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f88255b82d8) at /usr/local/include/c++/7.3.0/condition_variable:166
#3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f88255b82d8) at /usr/local/include/c++/7.3.0/condition_variable:106
#4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., 
    __atime=..., __lock=..., this=0x7f88255b82d8) at /usr/local/include/c++/7.3.0/condition_variable:129
#5  wait_for<long int, std::ratio<1>, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()>::<lambda()> > (__p=..., __rtime=..., __lock=..., this=0x7f88255b82d8)
    at /usr/local/include/c++/7.3.0/condition_variable:145
#6  operator() (__closure=0x7f88255c2ac8) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/spdlog/spdlog-prefix/src/spdlog/include/spdlog/details/periodic_worker-inl.h:25
#7  __invoke_impl<void, spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
#8  __invoke<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#9  _M_invoke<0> (this=0x7f88255c2ac8) at /usr/local/include/c++/7.3.0/thread:234
#10 operator() (this=0x7f88255c2ac8) at /usr/local/include/c++/7.3.0/thread:243
#11 std::thread::_State_impl<std::thread::_Invoker<std::tuple<spdlog::details::periodic_worker::periodic_worker(const std::function<void()>&, std::chrono::seconds)::<lambda()> > > >::_M_run(void) (this=0x7f88255c2ac0)
    at /usr/local/include/c++/7.3.0/thread:186
#12 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#13 0x00007f8828f86ea5 in start_thread (arg=0x7f88244fd700) at pthread_create.c:307
#14 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (LWP 7539):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x0000000000b769ca in __gthread_cond_timedwait (__abs_timeout=0x7f8824cec800, __mutex=<optimized out>, __cond=0x7f88255e5038) at /usr/local/include/c++/7.3.0/x86_64-pc-linux-gnu/bits/gthr-default.h:871
#2  __wait_until_impl<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f88255e5038) at /usr/local/include/c++/7.3.0/condition_variable:166
#3  wait_until<std::chrono::duration<long, std::ratio<1, 1000000000> > > (__atime=..., __lock=..., this=0x7f88255e5038) at /usr/local/include/c++/7.3.0/condition_variable:106
#4  wait_until<std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 1000000000> >, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (
    __p=..., __atime=..., __lock=..., this=0x7f88255e5038) at /usr/local/include/c++/7.3.0/condition_variable:129
#5  wait_for<long int, std::ratio<1, 1000>, spdlog::details::mpmc_blocking_queue<T>::dequeue_for(T&, std::chrono::milliseconds) [with T = spdlog::details::async_msg]::<lambda()> > (__p=..., __rtime=<synthetic pointer>, __lock=..., this=0x7f88255e5038)
    at /usr/local/include/c++/7.3.0/condition_variable:145
#6  dequeue_for (wait_duration=..., popped_item=..., this=0x7f88255e5010) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/spdlog/spdlog-prefix/src/spdlog/include/spdlog/details/mpmc_blocking_q.h:58
#7  spdlog::details::thread_pool::process_next_msg_ (this=this@entry=0x7f88255e5010) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/spdlog/spdlog-prefix/src/spdlog/include/spdlog/details/thread_pool-inl.h:99
#8  0x0000000000b76d18 in worker_loop_ (this=0x7f88255e5010) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/spdlog/spdlog-prefix/src/spdlog/include/spdlog/details/thread_pool-inl.h:90
#9  operator() (__closure=<optimized out>) at /home/couchbase/jenkins/workspace/cbdeps-platform-build-old/deps/packages/build/spdlog/spdlog-prefix/src/spdlog/include/spdlog/details/thread_pool-inl.h:28
#10 __invoke_impl<void, spdlog::details::thread_pool::thread_pool(size_t, size_t, std::function<void()>)::<lambda()> > (__f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:60
#11 __invoke<spdlog::details::thread_pool::thread_pool(size_t, size_t, std::function<void()>)::<lambda()> > (__fn=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#12 _M_invoke<0> (this=<optimized out>) at /usr/local/include/c++/7.3.0/thread:234
#13 operator() (this=<optimized out>) at /usr/local/include/c++/7.3.0/thread:243

#14 std::thread::_State_impl<std::thread::_Invoker<std::tuple<spdlog::details::thread_pool::thread_pool(size_t, size_t, std::function<void()>)::<lambda()> > > >::_M_run(void) (this=<optimized out>) at /usr/local/include/c++/7.3.0/thread:186
#15 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#16 0x00007f8828f86ea5 in start_thread (arg=0x7f8824cfe700) at pthread_create.c:307
#17 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (LWP 7534):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f882849b567 in background_thread_sleep (tsdn=<optimized out>, interval=3800000000, info=<optimized out>) at src/background_thread.c:255
#2  background_work_sleep_once (ind=0, info=<optimized out>, tsdn=<optimized out>) at src/background_thread.c:307
#3  background_thread0_work (tsd=0x7f8825dee220) at src/background_thread.c:452
#4  background_work (ind=<optimized out>, tsd=0x7f8825dee220) at src/background_thread.c:490
#5  background_thread_entry (ind_arg=<optimized out>) at src/background_thread.c:522
#6  0x00007f8828f86ea5 in start_thread (arg=0x7f8825dff700) at pthread_create.c:307
#7  0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (LWP 7533):
#0  0x00007f88268cf0e3 in epoll_wait () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f88282623b5 in epoll_dispatch (base=0x7f882508c300, tv=<optimized out>) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/epoll.c:465
---Type <return> to continue, or q <return> to quit---
#2  0x00007f8828259366 in event_base_loop (base=0x7f882508c300, flags=1) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/libevent/libevent-prefix/src/libevent/event.c:1998
#3  0x0000000000c2adb7 in folly::EventBase::loopBody (this=this@entry=0x7f882509f500, flags=flags@entry=0, ignoreKeepAlive=ignoreKeepAlive@entry=false)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:397
#4  0x0000000000c2b286 in folly::EventBase::loop (this=this@entry=0x7f882509f500) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:315
#5  0x0000000000c2cc46 in folly::EventBase::loopForever (this=0x7f882509f500) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/io/async/EventBase.cpp:538
#6  0x0000000000573a8c in memcached_main(int, char**) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/daemon/memcached.cc:1063
#7  0x00007f88267f2555 in __libc_start_main (main=0x546e30 <main(int, char**)>, argc=3, argv=0x7fffc7087488, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffc7087478) at ../csu/libc-start.c:266
#8  0x000000000056bab7 in _start () at /opt/gcc-10.2.0/include/c++/10.2.0/bits/char_traits.h:322

Thread 1 (LWP 7600):
#0  0x00007f8826806387 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:55
#1  0x00007f8826807a78 in __GI_abort () at abort.c:90
#2  0x00007f882715163c in __gnu_cxx::__verbose_terminate_handler () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/vterminate.cc:95
#3  0x0000000000b53bab in backtrace_terminate_handler() () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/utilities/terminate_handler.cc:88
#4  0x00007f882715c8f6 in __cxxabiv1::__terminate(void (*)()) () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_terminate.cc:48
#5  0x00007f882715c961 in std::terminate () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_terminate.cc:58
#6  0x00007f882715cbf4 in __cxxabiv1::__cxa_throw (obj=obj@entry=0x7f8788000980, tinfo=0x10a05b0 <typeinfo for std::logic_error>, dest=0x445400 <_ZNSt11logic_errorD1Ev@plt>) at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/libsupc++/eh_throw.cc:95
#7  0x00000000004c1f61 in CheckpointManager::queueDirty(SingleThreadedRCPtr<Item, Item*, std::default_delete<Item> >&, GenerateBySeqno, GenerateCas, PreLinkDocumentContext*, std::function<void (long)>) (this=0x7f8739098e80, qi=..., 
    generateBySeqno=<optimized out>, generateCas=<optimized out>, preLinkDocumentContext=<optimized out>, assignedSeqnoCallback=...) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/checkpoint_manager.cc:915
#8  0x000000000073fa09 in VBucket::queueItem(SingleThreadedRCPtr<Item, Item*, std::default_delete<Item> >&, VBQueueItemCtx const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.cc:1304
#9  0x000000000074003c in VBucket::queueDirty(HashTable::HashBucketLock const&, StoredValue&, VBQueueItemCtx const&) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.cc:1394
#10 0x0000000000848066 in EPVBucket::addNewStoredValue (this=0x7f87390e1600, hbl=..., itm=..., queueItmCtx=..., genRevSeqno=<optimized out>) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/ep_vb.cc:716
#11 0x000000000073a5ca in VBucket::processSetInner(HashTable::FindUpdateResult&, StoredValue*&, Item&, unsigned long, bool, bool, VBQueueItemCtx const&, cb::StoreIfStatus, bool) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/hash_table.h:741
#12 0x000000000073abb4 in VBucket::processSet(HashTable::FindUpdateResult&, StoredValue*&, Item&, unsigned long, bool, bool, VBQueueItemCtx const&, cb::StoreIfStatus, bool) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.cc:3414
#13 0x000000000073e084 in VBucket::prepare(Item&, unsigned long, unsigned long*, CookieIface const*, EventuallyPersistentEngine&, CheckConflicts, bool, GenerateBySeqno, GenerateCas, Collections::VB::CachingReadHandle const&) ()
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/vbucket.cc:1969
#14 0x000000000070721a in KVBucket::prepare(Item&, CookieIface const*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/kv_bucket.cc:1832
#15 0x0000000000907cd6 in PassiveStream::processMessage(MutationConsumerMessage*, PassiveStream::MessageType) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/response.h:478
#16 0x00000000009082f8 in PassiveStream::processPrepare(MutationConsumerMessage*) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/passive_stream.cc:767
#17 0x000000000090872b in PassiveStream::processBufferedMessages(unsigned int&, unsigned long) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/passive_stream.cc:499
#18 0x00000000008f9372 in DcpConsumer::drainStreamsBufferedItems (this=this@entry=0x7f8738eb1080, stream=..., yieldThreshold=10) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/consumer.cc:1276
#19 0x00000000008ff937 in DcpConsumer::processBufferedItems() () at /opt/gcc-10.2.0/include/c++/10.2.0/ext/atomicity.h:100
#20 0x0000000000902ee5 in DcpConsumerTask::run (this=0x7f8739428e10) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/engines/ep/src/dcp/consumer.cc:84
#21 0x0000000000ac21b9 in GlobalTask::execute(std::basic_string_view<char, std::char_traits<char> >) () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/globaltask.cc:98
#22 0x0000000000abb89a in FollyExecutorPool::TaskProxy::scheduleViaCPUPool()::{lambda()#2}::operator()() const (__closure=0x7f87a5fe9650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:309
#23 0x0000000000ac356e in operator() (this=0x7f87a5fe9650) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#24 CancellableCPUExecutor::add(GlobalTask*, folly::Function<void ()>)::{lambda()#1}::operator()() const () at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/cancellable_cpu_executor.cc:42
#25 0x0000000000c216d0 in operator() (this=0x7f87a5fe9840) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:416
#26 folly::ThreadPoolExecutor::runTask(std::shared_ptr<folly::ThreadPoolExecutor::Thread> const&, folly::ThreadPoolExecutor::Task&&) (this=this@entry=0x7f8825151d00, thread=..., 
    task=task@entry=<unknown type in /usr/lib/debug/opt/couchbase/bin/memcached-7.2.1-5902.x86_64.debug, CU 0xaa39e93, DIE 0xaabddc8>)
    at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/ThreadPoolExecutor.cpp:97
#27 0x0000000000c0c16a in folly::CPUThreadPoolExecutor::threadRun (this=0x7f8825151d00, thread=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/executors/CPUThreadPoolExecutor.cpp:265
#28 0x0000000000c24689 in __invoke_impl<void, void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__t=<optimized out>, 
    __f=<optimized out>) at /usr/local/include/c++/7.3.0/bits/invoke.h:73
#29 __invoke<void (folly::ThreadPoolExecutor::*&)(std::shared_ptr<folly::ThreadPoolExecutor::Thread>), folly::ThreadPoolExecutor*&, std::shared_ptr<folly::ThreadPoolExecutor::Thread>&> (__fn=<optimized out>)
    at /usr/local/include/c++/7.3.0/bits/invoke.h:95
#30 __call<void, 0, 1> (__args=<optimized out>, this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:467
#31 operator()<> (this=<optimized out>) at /usr/local/include/c++/7.3.0/functional:551
#32 folly::detail::function::FunctionTraits<void ()>::callBig<std::_Bind<void (folly::ThreadPoolExecutor::*(folly::ThreadPoolExecutor*, std::shared_ptr<folly::ThreadPoolExecutor::Thread>))(std::shared_ptr<folly::ThreadPoolExecutor::Thread>)> >(folly::detail::function::Data&) (p=...) at /home/couchbase/jenkins/cbdeps-ws/deps/packages/build/folly/folly-prefix/src/folly/folly/Function.h:401
#33 0x0000000000abb594 in operator() (this=0x7f88255e6140) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#34 operator() (__closure=0x7f88255e6140) at /home/couchbase/jenkins/workspace/couchbase-server-unix/kv_engine/executor/folly_executorpool.cc:49
#35 folly::detail::function::FunctionTraits<void ()>::callBig<CBRegisteredThreadFactory::newThread(folly::Function<void ()>&&)::{lambda()#1}>(folly::detail::function::Data&) (p=...)
    at /home/couchbase/jenkins/workspace/couchbase-server-unix/server_build/tlm/deps/folly.exploded/include/folly/Function.h:401
#36 0x00007f8827185d40 in execute_native_thread_routine () at /tmp/deploy/objdir/../gcc-10.2.0/libstdc++-v3/src/c++11/thread.cc:80
#37 0x00007f8828f86ea5 in start_thread (arg=0x7f87a5ffb700) at pthread_create.c:307
#38 0x00007f88268ceb0d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
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