2014-10-20 05:53:16 12543 [Warning] Monitor ibuf_merges_insert is already enabled.
mysqld: /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/table_cache.h:527: void Table_cache::release_table(THD*, TABLE*): Assertion `! table->s->has_old_version()' failed.
18:53:16 UTC - mysqld got signal 6 ;
[...]
Query (0): Connection ID (thread ID): 5
Status: NOT_KILLED
Single threaded run, single mysqld involved
Thread 1 (Thread 0x7f6c99709700 (LWP 12786)):
+bt
#0 0x00007f6c9fc33771 in pthread_kill () from /lib64/libpthread.so.0
#1 0x0000000000ab7586 in my_write_core (sig=6) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/mysys/stacktrace.c:422
#2 0x000000000072f9ff in handle_fatal_signal (sig=6) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/signal_handler.cc:236
#3 <signal handler called>
#4 0x00007f6c9e8375c9 in raise () from /lib64/libc.so.6
#5 0x00007f6c9e838cd8 in abort () from /lib64/libc.so.6
#6 0x00007f6c9e830536 in __assert_fail_base () from /lib64/libc.so.6
#7 0x00007f6c9e8305e2 in __assert_fail () from /lib64/libc.so.6
#8 0x0000000000780f03 in Table_cache::release_table (this=0x1894a20 <table_cache_manager>, thd=0x7f6c390a14e0, table=0x7f6c390cc880) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/table_cache.h:527
#9 0x0000000000771326 in open_table (thd=0x7f6c390a14e0, table_list=0x7f6c99708740, ot_ctx=0x7f6c99708590) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/sql_base.cc:3256
#10 0x000000000077389e in open_and_process_table (thd=0x7f6c390a14e0, lex=0x7f6c390a3a28, tables=0x7f6c99708740, counter=0x7f6c99708694, flags=2048, prelocking_strategy=0x7f6c997086d0, has_prelocking_list=false, ot_ctx=0x7f6c99708590) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/sql_base.cc:4699
#11 0x00000000007747a3 in open_tables (thd=0x7f6c390a14e0, start=0x7f6c99708650, counter=0x7f6c99708694, flags=2048, prelocking_strategy=0x7f6c997086d0) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/sql_base.cc:5213
#12 0x000000000077577d in open_and_lock_tables (thd=0x7f6c390a14e0, tables=0x7f6c99708740, derived=false, flags=2048, prelocking_strategy=0x7f6c997086d0) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/sql_base.cc:5860
#13 0x000000000076751d in open_and_lock_tables (thd=0x7f6c390a14e0, tables=0x7f6c99708740, derived=false, flags=2048) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/sql_base.h:477
#14 0x00000000009fab5d in Event_db_repository::open_event_table (thd=0x7f6c390a14e0, lock_type=TL_WRITE, table=0x7f6c99708d38) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/event_db_repository.cc:619
#15 0x00000000009fc357 in Event_db_repository::update_timing_fields_for_event (this=0x28b4c20, thd=0x7f6c390a14e0, event_db_name=..., event_name=..., last_executed=1413744792, status=2) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/event_db_repository.cc:1137
#16 0x00000000009ffb2a in Event_queue::get_top_for_execution_if_time (this=0x2a194e0, thd=0x7f6c390a14e0, event_name=0x7f6c99708e50) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/event_queue.cc:672
#17 0x0000000000a0169a in Event_scheduler::run (this=0x2a195c0, thd=0x7f6c390a14e0) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/event_scheduler.cc:492
#18 0x0000000000a00d7d in event_scheduler_thread (arg=0x7f6c390a5540) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/sql/event_scheduler.cc:242
#19 0x0000000000dc5bac in pfs_spawn_thread (arg=0x7f6c3912e4f0) at /mnt/workspace/percona-server-5.6-binaries-debug-yassl/label_exp/centos6-64/percona-server-5.6.21-69.0/storage/perfschema/pfs.cc:1860
#20 0x00007f6c9fc2edf3 in start_thread () from /lib64/libpthread.so.0
#21 0x00007f6c9e8f801d in clone () from /lib64/libc.so.6
