Memcached is stuck on create bucket

Opening a different bug from 10326, since the stack is different.

Manifest : http://builds.hq.northscale.net/latestbuilds/couchbase-server-enterprise_x86_64_3.0.0-419-rel.rpm.manifest.xml

stack memcached

[root@centos-64-x64 couchbase]# gdb -p 20308 --ex 't a a bt' < /dev/null
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6_4.1)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Attaching to process 20308
Reading symbols from /opt/couchbase/bin/memcached...done.
Reading symbols from /opt/couchbase/bin/../lib/memcached/libmcd_util.so.1.0.0...done.
Loaded symbols for /opt/couchbase/bin/../lib/memcached/libmcd_util.so.1.0.0
Reading symbols from /opt/couchbase/bin/../lib/libcbsasl.so.1.1.1...done.
Loaded symbols for /opt/couchbase/bin/../lib/libcbsasl.so.1.1.1
Reading symbols from /opt/couchbase/bin/../lib/libplatform.so.0.1.0...done.
Loaded symbols for /opt/couchbase/bin/../lib/libplatform.so.0.1.0
Reading symbols from /opt/couchbase/bin/../lib/libcJSON.so.1.0.0...done.
Loaded symbols for /opt/couchbase/bin/../lib/libcJSON.so.1.0.0
Reading symbols from /opt/couchbase/bin/../lib/libsnappy.so.1...done.
Loaded symbols for /opt/couchbase/bin/../lib/libsnappy.so.1
Reading symbols from /opt/couchbase/bin/../lib/libtcmalloc_minimal.so.4...done.
Loaded symbols for /opt/couchbase/bin/../lib/libtcmalloc_minimal.so.4
Reading symbols from /opt/couchbase/bin/../lib/libevent_core-2.0.so.5...done.
Loaded symbols for /opt/couchbase/bin/../lib/libevent_core-2.0.so.5
Reading symbols from /usr/lib64/libssl.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libssl.so.6
Reading symbols from /usr/lib64/libcrypto.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libcrypto.so.6
Reading symbols from /lib64/libpthread.so.0...(no debugging symbols found)...done.
[New LWP 20744]
[New LWP 20337]
[New LWP 20336]
[New LWP 20335]
[New LWP 20334]
[New LWP 20333]
[New LWP 20322]
[New LWP 20321]
[Thread debugging using libthread_db enabled]
Loaded symbols for /lib64/libpthread.so.0
Reading symbols from /lib64/libdl.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libdl.so.2
Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/librt.so.1
Reading symbols from /lib64/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libm.so.6
Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib64/libc.so.6
Reading symbols from /usr/lib64/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib64/libstdc++.so.6
Reading symbols from /lib64/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libgcc_s.so.1
Reading symbols from /lib64/libgssapi_krb5.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libgssapi_krb5.so.2
Reading symbols from /lib64/libkrb5.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib64/libkrb5.so.3
Reading symbols from /lib64/libcom_err.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libcom_err.so.2
Reading symbols from /lib64/libk5crypto.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib64/libk5crypto.so.3
Reading symbols from /lib64/libz.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libz.so.1
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /lib64/libkrb5support.so.0...(no debugging symbols found)...done.
Loaded symbols for /lib64/libkrb5support.so.0
Reading symbols from /lib64/libkeyutils.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libkeyutils.so.1
Reading symbols from /lib64/libresolv.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/libresolv.so.2
Reading symbols from /lib64/libselinux.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib64/libselinux.so.1
Reading symbols from /opt/couchbase/lib/memcached/stdin_term_handler.so...done.
Loaded symbols for /opt/couchbase/lib/memcached/stdin_term_handler.so
Reading symbols from /opt/couchbase/lib/memcached/file_logger.so...done.
Loaded symbols for /opt/couchbase/lib/memcached/file_logger.so
Reading symbols from /opt/couchbase/lib/memcached/bucket_engine.so...done.
Loaded symbols for /opt/couchbase/lib/memcached/bucket_engine.so
Reading symbols from /opt/couchbase/lib/memcached/ep.so...done.
Loaded symbols for /opt/couchbase/lib/memcached/ep.so
Reading symbols from /opt/couchbase/lib/libcouchstore.so...done.
Loaded symbols for /opt/couchbase/lib/libcouchstore.so
Reading symbols from /opt/couchbase/lib/libdirutils.so.0.1.0...done.
Loaded symbols for /opt/couchbase/lib/libdirutils.so.0.1.0
Reading symbols from /opt/couchbase/lib/libv8.so...done.
Loaded symbols for /opt/couchbase/lib/libv8.so
Reading symbols from /opt/couchbase/lib/libicui18n.so.44...done.
Loaded symbols for /opt/couchbase/lib/libicui18n.so.44
Reading symbols from /opt/couchbase/lib/libicuuc.so.44...done.
Loaded symbols for /opt/couchbase/lib/libicuuc.so.44
Reading symbols from /opt/couchbase/lib/libicudata.so.44...(no debugging symbols found)...done.
Loaded symbols for /opt/couchbase/lib/libicudata.so.44
0x00007f3470731163 in epoll_wait () from /lib64/libc.so.6

Thread 9 (Thread 0x7f346eb73700 (LWP 20321)):
#0 0x00007f347072374d in read () from /lib64/libc.so.6
#1 0x00007f34706b9fe8 in _IO_new_file_underflow () from /lib64/libc.so.6
#2 0x00007f34706bbaee in _IO_default_uflow_internal () from /lib64/libc.so.6
#3 0x00007f34706b01ca in _IO_getline_info_internal () from /lib64/libc.so.6
#4 0x00007f34706af029 in fgets () from /lib64/libc.so.6
#5 0x00007f346eb748c1 in check_stdin_thread (arg=<value optimized out>) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/memcached/extensions/daemon/stdin_check.c:38
#6 0x00007f34720bbb7f in platform_thread_wrap (arg=0x26f8080) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/platform/src/cb_pthreads.c:19
#7 0x00007f34710739d1 in start_thread () from /lib64/libpthread.so.0
#8 0x00007f3470730b6d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f346df6f700 (LWP 20322)):
#0 0x00007f347107798e in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x00007f34720bb8fb in cb_cond_timedwait (cond=0x7f346e172800, mutex=0x7f346e1727c0, ms=<value optimized out>) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/platform/src/cb_pthreads.c:156
#2 0x00007f346df71d4d in logger_thead_main (arg=0x2730b00) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/memcached/extensions/loggers/file_logger.c:363
#3 0x00007f34720bbb7f in platform_thread_wrap (arg=0x26f8090) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/platform/src/cb_pthreads.c:19
#4 0x00007f34710739d1 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f3470730b6d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f346d362700 (LWP 20333)):
#0 0x00007f3470731163 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f3471854376 in epoll_dispatch (base=0xba7c500, tv=<value optimized out>) at epoll.c:404
#2 0x00007f347183fc44 in event_base_loop (base=0xba7c500, flags=<value optimized out>) at event.c:1558
#3 0x00007f34720bbb7f in platform_thread_wrap (arg=0x26f81a0) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/platform/src/cb_pthreads.c:19
#4 0x00007f34710739d1 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f3470730b6d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f346c961700 (LWP 20334)):
#0 0x00007f3470731163 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f3471854376 in epoll_dispatch (base=0xba7c280, tv=<value optimized out>) at epoll.c:404
#2 0x00007f347183fc44 in event_base_loop (base=0xba7c280, flags=<value optimized out>) at event.c:1558
#3 0x00007f34720bbb7f in platform_thread_wrap (arg=0x26f8190) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/platform/src/cb_pthreads.c:19
#4 0x00007f34710739d1 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f3470730b6d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f346bf60700 (LWP 20335)):
#0 0x00007f3470731163 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f3471854376 in epoll_dispatch (base=0xba7cc80, tv=<value optimized out>) at epoll.c:404
#2 0x00007f347183fc44 in event_base_loop (base=0xba7cc80, flags=<value optimized out>) at event.c:1558
#3 0x00007f34720bbb7f in platform_thread_wrap (arg=0x26f8180) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/platform/src/cb_pthreads.c:19
#4 0x00007f34710739d1 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f3470730b6d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f346b55f700 (LWP 20336)):
#0 0x00007f3470731163 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f3471854376 in epoll_dispatch (base=0xba7ca00, tv=<value optimized out>) at epoll.c:404
#2 0x00007f347183fc44 in event_base_loop (base=0xba7ca00, flags=<value optimized out>) at event.c:1558
#3 0x00007f34720bbb7f in platform_thread_wrap (arg=0x26f8170) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/platform/src/cb_pthreads.c:19
#4 0x00007f34710739d1 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f3470730b6d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f346ab5e700 (LWP 20337)):
#0 0x00007f3470731163 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f3471854376 in epoll_dispatch (base=0xba7c780, tv=<value optimized out>) at epoll.c:404
#2 0x00007f347183fc44 in event_base_loop (base=0xba7c780, flags=<value optimized out>) at event.c:1558
#3 0x00007f34720bbb7f in platform_thread_wrap (arg=0x26f8160) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/platform/src/cb_pthreads.c:19
#4 0x00007f34710739d1 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f3470730b6d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f346a15d700 (LWP 20744)):
#0 0x00007f34706f4cdd in nanosleep () from /lib64/libc.so.6
#1 0x00007f3470729e54 in usleep () from /lib64/libc.so.6
#2 0x00007f3469496975 in updateStatsThread (arg=<value optimized out>) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/ep-engine/src/memory_tracker.cc:36
#3 0x00007f34720bbb7f in platform_thread_wrap (arg=0x26f81b0) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/platform/src/cb_pthreads.c:19
#4 0x00007f34710739d1 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f3470730b6d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f34728d07e0 (LWP 20308)):
#0 0x00007f3470731163 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f3471854376 in epoll_dispatch (base=0xba7c000, tv=<value optimized out>) at epoll.c:404
#2 0x00007f347183fc44 in event_base_loop (base=0xba7c000, flags=<value optimized out>) at event.c:1558
#3 0x000000000040d3db in main (argc=<value optimized out>, argv=<value optimized out>) at /home/buildbot/centos-5-x64-300-builder/build/build/cmake/memcached/daemon/memcached.c:7997
Missing separate debuginfos, use: debuginfo-install couchbase-server-3.0.0-419.x86_64
(gdb) quit
A debugging session is active.

Inferior 1 [process 20308] will be detached.

Quit anyway? (y or n) [answered Y; input not from terminal]
Detaching from program: /opt/couchbase/bin/memcached, process 20308