Stop/Start rebalance resulted in memcached crash on 181 (bucket_engine_release_cookie at bucket_engine.c:2388 __assert_fail ())

Core was generated by `/opt/couchbase/bin/memcached -X /opt/couchbase/lib/memcached/stdin_term_handler'.
Program terminated with signal 6, Aborted.
#0 0x0000003171230265 in raise () from /lib64/libc.so.6

Thread 32 (Thread 0x2ae3fbdb2ca0 (LWP 30194)):
#0 0x00000031712d48a8 in epoll_wait () from /lib64/libc.so.6
#1 0x00002ae3fb931c28 in epoll_dispatch (base=0x10d1c000,
tv=<value optimized out>) at epoll.c:404
#2 0x00002ae3fb920a4c in event_base_loop (base=0x10d1c000, flags=0)
at event.c:1558
#3 0x0000000000409df3 in main (argc=<value optimized out>,
argv=<value optimized out>) at daemon/memcached.c:7586

Thread 31 (Thread 30203):
#0 0x00000031712c678b in read () from /lib64/libc.so.6
#1 0x000000317126cd57 in _IO_new_file_underflow () from /lib64/libc.so.6
#2 0x000000317126d71e in _IO_default_uflow_internal () from /lib64/libc.so.6
#3 0x0000003171268fdb in getc () from /lib64/libc.so.6
#4 0x00002ae3fbdb4875 in check_stdin_thread (arg=0x403500)
at extensions/daemon/stdin_check.c:19
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 30 (Thread 30204):
#0 0x000000317129a541 in nanosleep () from /lib64/libc.so.6
#1 0x000000317129a364 in sleep () from /lib64/libc.so.6
#2 0x0000000000415918 in check_isasl_db_thread (arg=<value optimized out>)
at daemon/isasl.c:233
#3 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#4 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 29 (Thread 30205):
#0 0x00000031712d48a8 in epoll_wait () from /lib64/libc.so.6
#1 0x00002ae3fb931c28 in epoll_dispatch (base=0x10d1c500,
tv=<value optimized out>) at epoll.c:404
#2 0x00002ae3fb920a4c in event_base_loop (base=0x10d1c500, flags=0)
at event.c:1558
#3 0x00000000004139a4 in worker_libevent (arg=0x10cf4500)
at daemon/thread.c:305
#4 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#5 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 28 (Thread 30206):
#0 0x0000003171e0d524 in __lll_lock_wait () from /lib64/libpthread.so.0
#1 0x0000003171e08e1a in _L_lock_1034 () from /lib64/libpthread.so.0
#2 0x0000003171e08cdc in pthread_mutex_lock () from /lib64/libpthread.so.0
#3 0x00002aaaaad40ac1 in acquire (this=0x13c7a000, it=0x2aaaaba71f00)
at mutex.hh:70
#4 lock (this=0x13c7a000, it=0x2aaaaba71f00) at locks.hh:48
#5 LockHolder (this=0x13c7a000, it=0x2aaaaba71f00) at locks.hh:26
#6 notify (this=0x13c7a000, it=0x2aaaaba71f00) at tapconnmap.hh:191
#7 EventuallyPersistentEngine::addMutationEvent (this=0x13c7a000,
it=0x2aaaaba71f00) at ep_engine.h:661
#8 0x00002aaaaad301b7 in EventuallyPersistentEngine::tapNotify(const void *, void *, uint16_t, uint8_t, uint16_t, ._107, uint32_t, const void *, size_t, uint32_t, uint32_t, uint64_t, const void *, size_t, uint16_t) (this=0x13c7a000,
cookie=0x11cc1b88, engine_specific=<value optimized out>,
nengine=<value optimized out>, tap_flags=<value optimized out>,
tap_event=TAP_MUTATION, tap_seqno=1256, key=0x1e47f028, nkey=45, flags=0,
exptime=0, data=0x1e47f055, ndata=2213, vbucket=22) at ep_engine.cc:2344
#9 0x00002aaaaaaad47f in bucket_tap_notify (handle=<value optimized out>,
cookie=0x11cc1b88, engine_specific=0x1e47f020, nengine=0, ttl=254 '\376',
tap_flags=0, tap_event=TAP_MUTATION, tap_seqno=1256, key=0x1e47f028,
nkey=45, flags=0, exptime=0, cas=390443, data=0x1e47f055, ndata=2213,
vbucket=22) at bucket_engine.c:1819
#10 0x00000000004068d9 in process_bin_tap_packet (event=<value optimized out>,
c=0x11cc1b88) at daemon/memcached.c:2721
#11 0x00000000004110f5 in complete_nread_binary (c=0x13c7a5f0)
at daemon/memcached.c:3407
#12 0x0000000000411d91 in complete_nread (c=0x11cc1b88)
at daemon/memcached.c:3489
#13 conn_nread (c=0x11cc1b88) at daemon/memcached.c:5309
#14 0x0000000000407454 in event_handler (fd=<value optimized out>,
which=<value optimized out>, arg=0x11cc1b88) at daemon/memcached.c:5618
#15 0x00002ae3fb920df9 in event_process_active_single_queue (base=0x10d1c280,
flags=0) at event.c:1308
#16 event_process_active (base=0x10d1c280, flags=0) at event.c:1375
#17 event_base_loop (base=0x10d1c280, flags=0) at event.c:1572
#18 0x00000000004139a4 in worker_libevent (arg=0x10cf4600)
at daemon/thread.c:305
#19 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#20 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 27 (Thread 30207):
#0 0x00000031712d48a8 in epoll_wait () from /lib64/libc.so.6
#1 0x00002ae3fb931c28 in epoll_dispatch (base=0x10d1cc80,
tv=<value optimized out>) at epoll.c:404
#2 0x00002ae3fb920a4c in event_base_loop (base=0x10d1cc80, flags=0)
at event.c:1558
#3 0x00000000004139a4 in worker_libevent (arg=0x10cf4700)
at daemon/thread.c:305
#4 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#5 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 26 (Thread 30208):
#0 0x00000031712d48a8 in epoll_wait () from /lib64/libc.so.6
#1 0x00002ae3fb931c28 in epoll_dispatch (base=0x10d1ca00,
tv=<value optimized out>) at epoll.c:404
#2 0x00002ae3fb920a4c in event_base_loop (base=0x10d1ca00, flags=0)
at event.c:1558
#3 0x00000000004139a4 in worker_libevent (arg=0x10cf4800)
at daemon/thread.c:305
#4 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#5 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 25 (Thread 30209):
#0 0x00002aaaaad60612 in TapProducer::windowIsFull (this=0x224c6700)
at tapconnection.cc:402
#1 0x00002aaaaad45c34 in EventuallyPersistentEngine::doWalkTapQueue (
this=0x13c7a000, cookie=0x1221a848, itm=0x44d107a8, es=0x44d107a0,
nes=0x44d107bc, ttl=<value optimized out>, flags=0x44d107ba,
seqno=0x44d107b4, vbucket=0x44d107b8, connection=0x224c6700,
retry=@0x44d10677) at ep_engine.cc:1810
#2 0x00002aaaaad356b1 in EventuallyPersistentEngine::walkTapQueue (
this=0x13c7a000, cookie=0x1221a848, itm=0x44d107a8, es=0x44d107a0,
nes=0x44d107bc, ttl=0x44d107bf "\377", flags=0x44d107ba, seqno=0x44d107b4,
vbucket=0x44d107b8) at ep_engine.cc:2062
#3 0x00002aaaaaaad336 in bucket_tap_iterator_shim (handle=0x2aaaaacb26c0,
cookie=0x1221a848, itm=0x44d107a8, engine_specific=0x44d107a0,
nengine_specific=0x44d107bc, ttl=0x44d107bf "\377", flags=0x44d107ba,
seqno=0x44d107b4, vbucket=0x44d107b8) at bucket_engine.c:1848
#4 0x000000000040ffc2 in ship_tap_log (c=0x1221a848)
at daemon/memcached.c:2395
#5 conn_ship_log (c=0x1221a848) at daemon/memcached.c:5156
#6 0x0000000000407446 in event_handler (fd=<value optimized out>,
which=<value optimized out>, arg=0x1221a848) at daemon/memcached.c:5618
#7 0x00002ae3fb920df9 in event_process_active_single_queue (base=0x10d1c780,
flags=0) at event.c:1308
#8 event_process_active (base=0x10d1c780, flags=0) at event.c:1375
#9 event_base_loop (base=0x10d1c780, flags=0) at event.c:1572
#10 0x00000000004139a4 in worker_libevent (arg=0x10cf4900)
at daemon/thread.c:305
#11 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#12 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 24 (Thread 30471):
#0 0x0000003171e0aee9 in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad07ad8 in wait (this=0x10d368c0) at syncobject.hh:31
#2 Dispatcher::run (this=0x10d368c0) at dispatcher.cc:89
#3 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x10d36914)
at dispatcher.cc:28
#4 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#5 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 23 (Thread 30472):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x28c02400, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x28c02400, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x10d36fc0)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x10d37014)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 22 (Thread 30473):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x112f3900, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x112f3900, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x10d36c40)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x10d36c94)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 21 (Thread 30474):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad2706e in wait (this=0x3c081000) at syncobject.hh:42
#2 wait (this=0x3c081000) at tapconnmap.hh:199
#3 EventuallyPersistentEngine::notifyPendingConnections (this=0x3c081000)
at ep_engine.cc:3708
#4 0x00002aaaaad271d1 in EvpNotifyPendingConns (arg=0x3c081000)
at ep_engine.cc:971
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 20 (Thread 30475):
#0 0x0000003171e0aee9 in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad07ad8 in wait (this=0x11544700) at syncobject.hh:31
#2 Dispatcher::run (this=0x11544700) at dispatcher.cc:89
#3 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x11544754)
at dispatcher.cc:28
#4 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#5 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 19 (Thread 30476):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x28c03480, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x28c03480, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x11545180)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x115451d4)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 18 (Thread 30477):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x28c02a80, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x28c02a80, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x115448c0)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x11544914)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 17 (Thread 30478):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad2706e in wait (this=0x13c7b000) at syncobject.hh:42
#2 wait (this=0x13c7b000) at tapconnmap.hh:199
#3 EventuallyPersistentEngine::notifyPendingConnections (this=0x13c7b000)
at ep_engine.cc:3708
#4 0x00002aaaaad271d1 in EvpNotifyPendingConns (arg=0x13c7b000)
at ep_engine.cc:971
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 16 (Thread 30479):
#0 0x0000003171e0aee9 in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad07ad8 in wait (this=0x11544a80) at syncobject.hh:31
#2 Dispatcher::run (this=0x11544a80) at dispatcher.cc:89
#3 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x11544ad4)
at dispatcher.cc:28
#4 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#5 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 15 (Thread 30480):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x28c02500, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x28c02500, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x11545500)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x11545554)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 14 (Thread 30481):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x28c03180, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x28c03180, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x11544e00)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x11544e54)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 13 (Thread 30482):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad2706e in wait (this=0x2aaaad651000) at syncobject.hh:42
#2 wait (this=0x2aaaad651000) at tapconnmap.hh:199
#3 EventuallyPersistentEngine::notifyPendingConnections (this=0x2aaaad651000)
at ep_engine.cc:3708
#4 0x00002aaaaad271d1 in EvpNotifyPendingConns (arg=0x2aaaad651000)
at ep_engine.cc:971
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 12 (Thread 30483):
#0 0x0000003171e0aee9 in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad07ad8 in wait (this=0x19a8ea80) at syncobject.hh:31
#2 Dispatcher::run (this=0x19a8ea80) at dispatcher.cc:89
#3 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x19a8ead4)
at dispatcher.cc:28
#4 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#5 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 11 (Thread 30484):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x3034c400, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x3034c400, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x11545dc0)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x11545e14)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 10 (Thread 30485):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x3034db80, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x3034db80, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x19a8e8c0)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x19a8e914)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 9 (Thread 30486):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad2706e in wait (this=0x2aaaad64e000) at syncobject.hh:42
#2 wait (this=0x2aaaad64e000) at tapconnmap.hh:199
#3 EventuallyPersistentEngine::notifyPendingConnections (this=0x2aaaad64e000)
at ep_engine.cc:3708
#4 0x00002aaaaad271d1 in EvpNotifyPendingConns (arg=0x2aaaad64e000)
at ep_engine.cc:971
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 8 (Thread 30487):
#0 0x0000003171e0aee9 in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad07ad8 in wait (this=0x10d361c0) at syncobject.hh:31
#2 Dispatcher::run (this=0x10d361c0) at dispatcher.cc:89
#3 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x10d36214)
at dispatcher.cc:28
#4 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#5 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 7 (Thread 30488):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x112f2a80, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x112f2a80, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x10d376c0)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x10d37714)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 6 (Thread 30489):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x112f3680, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x112f3680, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x19a8f6c0)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x19a8f714)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 5 (Thread 30490):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad2706e in wait (this=0x3c080000) at syncobject.hh:42
#2 wait (this=0x3c080000) at tapconnmap.hh:199
#3 EventuallyPersistentEngine::notifyPendingConnections (this=0x3c080000)
at ep_engine.cc:3708
#4 0x00002aaaaad271d1 in EvpNotifyPendingConns (arg=0x3c080000)
at ep_engine.cc:971
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 4 (Thread 30491):
#0 0x0000003171e0aee9 in pthread_cond_wait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad07ad8 in wait (this=0x19a8fc00) at syncobject.hh:31
#2 Dispatcher::run (this=0x19a8fc00) at dispatcher.cc:89
#3 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x19a8fc54)
at dispatcher.cc:28
#4 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#5 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 3 (Thread 30492):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x32443880, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x32443880, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x19a8fdc0)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x19a8fe14)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 2 (Thread 30493):
#0 0x0000003171e0b150 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
from /lib64/libpthread.so.0
#1 0x00002aaaaad059b0 in wait (this=0x32442b80, d=...) at syncobject.hh:42
#2 IdleTask::run (this=0x32442b80, d=...) at dispatcher.cc:286
#3 0x00002aaaaad07ca6 in Dispatcher::run (this=0x19a8fa40)
at dispatcher.cc:123
#4 0x00002aaaaad0854b in launch_dispatcher_thread (arg=0x19a8fa94)
at dispatcher.cc:28
#5 0x0000003171e0673d in start_thread () from /lib64/libpthread.so.0
#6 0x00000031712d44bd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x53d29940 (LWP 30494)):
#0 0x0000003171230265 in raise () from /lib64/libc.so.6
#1 0x0000003171231d10 in abort () from /lib64/libc.so.6
#2 0x00000031712296e6 in __assert_fail () from /lib64/libc.so.6
#3 0x00002aaaaaaae280 in bucket_engine_release_cookie (cookie=0x11a04848)
at bucket_engine.c:2388
#4 0x00002aaaaad606b9 in TapConnection::releaseReference (this=0x224c6a80,
force=30) at tapconnection.cc:38
#5 0x00002aaaaad73929 in TapConnMap::notifyIOThreadMain (this=0x13c7a5e8)
at tapconnmap.cc:495
#6 0x00002aaaaad26f99 in EventuallyPersistentEngine::notifyPendingConnections
(this=0x13c7a000) at ep_engine.cc:3701
#7 0x00002aaaaad271d1 in EvpNotifyPendingConns (arg=0x13c7a000)
at ep_engine.cc:971
#8 0x0000003171e0673d in start_thread () from /lib64/libpt