Comment 0 for bug 1183997

One of my servers crashed today with the Assertion Failure error. It is running Percona XtraDB Cluster 5.5.30-30.2 which appears to be the latest code available as I am writing this.

The following bugs seem like they could be related but I'm not really sure as I am not a programmer and don't understand all of the debugging/terminology involved. If they are related and the bug is fixed in 5.5.31 then I would like to know when that release will be available to download.

https://bugs.launchpad.net/percona-server/+bug/1177004
https://bugs.launchpad.net/percona-server/+bug/1134757

Output of the error.log immediately after the crash (some sensitive info in the query was replaced with x's).

 len 224; hex b87403acc52b0000c12040b1ba2b000000e82d81b82b0000000000000000000000000000000000000000000000000000030000000000000002000000000000000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000000000008344510700000000cd167824c52b00000200000000000000010000000000000000e82d81b82b0000010000000000000060e1117700000000020000000000000038947a24c52b0000c8167824c52b00001000000000000000; asc t + @ + - + DQ x$ + - + ` w 8 z$ + x$ + ;
TRANSACTION 1C2CB25FD, ACTIVE 0 sec fetching rows
mysql tables in use 3, locked 0
MySQL thread id 8421534, OS thread handle 0x2bb86a0c7700, query id 46018609 xx.xx.xx.xx xx_xx_xxxx Sending data
SELECT COUNT(1) as count FROM `xxxxxxxxxxxxx_xxx`.`xxxxxxx_xxx_xxxx_xx` WHERE `xxxxxxxxxxxxx_xxx`.`xxxxxxx_xxx_xxxx_xx`.`key` = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' && `xxxxxxxxxxxxx_xxx`.`xxxxxxx_xxx_xxxx_xx`.`hour` = 'xx' && `xxxxxxxxxxxxx_xxx`.`xxxxxxx_xxx_xxxx_xx`.`xxx` = 'xx' /* xxxxxxx=xxx.xxxxxxxxxxxxx.xxx/xxx.xxx */
130524 14:30:47 InnoDB: Assertion failure in thread 48071053178624 in file btr0pcur.c line 254
InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to http://bugs.mysql.com.
InnoDB: If you get repeated assertion failures or crashes, even
InnoDB: immediately after the mysqld startup, there may be
InnoDB: corruption in the InnoDB tablespace. Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html
InnoDB: about forcing recovery.
19:30:47 UTC - mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed,
something is definitely wrong and this may fail.
Please help us make Percona Server better by reporting any
bugs at http://bugs.percona.com/

key_buffer_size=8388608
read_buffer_size=262144
max_used_connections=262
max_threads=1502
thread_count=74
connection_count=74
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 796213 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x55bb48a0
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 2bb86a0c6e70 thread_stack 0x40000
/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x7da13e]
/usr/sbin/mysqld(handle_fatal_signal+0x4a4)[0x6b0c74]
/lib/x86_64-linux-gnu/libpthread.so.0(+0xfcb0)[0x2ba852598cb0]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x35)[0x2ba852e16425]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x17b)[0x2ba852e19b8b]
/usr/sbin/mysqld[0x88184c]
/usr/sbin/mysqld[0x518caf]
/usr/sbin/mysqld[0x82f6e0]
/usr/sbin/mysqld[0x804a14]
/usr/sbin/mysqld(_ZN7handler21read_multi_range_nextEPP18st_key_multi_range+0x2d)[0x6b102d]
/usr/sbin/mysqld(_ZN18QUICK_RANGE_SELECT8get_nextEv+0x3f)[0x7634bf]
/usr/sbin/mysqld(_ZN26QUICK_ROR_INTERSECT_SELECT8get_nextEv+0xd2)[0x775262]
/usr/sbin/mysqld[0x77a0f9]
/usr/sbin/mysqld(_Z10sub_selectP4JOINP13st_join_tableb+0x64)[0x5d2b54]
/usr/sbin/mysqld[0x5dccfd]
/usr/sbin/mysqld(_ZN4JOIN4execEv+0x8e2)[0x5ec4a2]
/usr/sbin/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x133)[0x5edfb3]
/usr/sbin/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x1d5)[0x5eea25]
/usr/sbin/mysqld[0x5a10fe]
/usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+0x90b)[0x5a953b]
/usr/sbin/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x314)[0x5b08b4]
/usr/sbin/mysqld[0x5b11d8]
/usr/sbin/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x1a80)[0x5b3270]
/usr/sbin/mysqld(_Z10do_commandP3THD+0x167)[0x5b36c7]
/usr/sbin/mysqld(_Z24do_handle_one_connectionP3THD+0x14f)[0x64ecff]
/usr/sbin/mysqld(handle_one_connection+0x51)[0x64eed1]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x7e9a)[0x2ba852590e9a]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x2ba852ed3ccd]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (2bc5247a1bd0): is an invalid pointer
Connection ID (thread ID): 8421534
Status: KILL_QUERY

You may download the Percona Server operations manual by visiting
http://www.percona.com/software/percona-server/. You may find information
in the manual which will help you identify the cause of the crash.