所以我们的生产系统第一次产生了以下断言失败。在 mysqld 自动重启并回滚一些事务后，系统没有出现问题。
但是为什么在一个稳定的系统上会突然发生这种情况呢？
正常运行时间超过 5 个月，Mysqld 连续运行了大约 4 个月，没有其他错误。没有文件系统错误，内存错误。
该系统是 Ubuntu 10.4 64 位，内存约 16GB。.. 运行 mysql 5.1.41 所有 Innodb 表。
有人可以更具体地解释一下这个断言失败意味着什么吗？
120127 7:57:00 InnoDB: Assertion failure in thread 139886060934912 in file ../../../storage/innobase/rem/rem0rec.c line 337
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/5.1/en/forcing-recovery.html
InnoDB: about forcing recovery.
120127 7:57:00 - 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.
key_buffer_size=536870912
read_buffer_size=131072
max_used_connections=107
max_threads=151
threads_connected=49
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 854399 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
thd: 0x7f39ac188290
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 = 0x7f39c2f88e58 thread_stack 0x30000
/usr/sbin/mysqld(my_print_stacktrace+0x29) [0x7f3cb33671a9]
/usr/sbin/mysqld(handle_segfault+0x404) [0x7f3cb3074884]
/lib/libpthread.so.0(+0xf8f0) [0x7f3cb28e58f0]
/lib/libc.so.6(gsignal+0x35) [0x7f3cb135fa75]
/lib/libc.so.6(abort+0x180) [0x7f3cb13635c0]
/usr/sbin/mysqld(rec_get_offsets_func+0xe0) [0x7f3cb32a9e50]
/usr/sbin/mysqld(row_search_for_mysql+0x56e) [0x7f3cb32be4ce]
/usr/sbin/mysqld(ha_innobase::general_fetch(unsigned char*, unsigned int, unsigned int)+0x7c) [0x7f3cb32271ec]
/usr/sbin/mysqld(+0x3ccb0e) [0x7f3cb30e1b0e]
/usr/sbin/mysqld(sub_select(JOIN*, st_join_table*, bool)+0x81) [0x7f3cb30dfeb1]
/usr/sbin/mysqld(+0x3cb3fd) [0x7f3cb30e03fd]
/usr/sbin/mysqld(JOIN::exec()+0xbac) [0x7f3cb30f55ec]
/usr/sbin/mysqld(mysql_select(THD*, Item***, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*)+0x142) [0x7f3cb30f1302]
/usr/sbin/mysqld(handle_select(THD*, st_lex*, select_result*, unsigned long)+0x174) [0x7f3cb30f6c04]
/usr/sbin/mysqld(+0x36d9fa) [0x7f3cb30829fa]
/usr/sbin/mysqld(mysql_execute_command(THD*)+0x526) [0x7f3cb3086806]
/usr/sbin/mysqld(mysql_parse(THD*, char const*, unsigned int, char const**)+0x35f) [0x7f3cb308bcbf]
/usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int)+0xd69) [0x7f3cb308ca39]
/usr/sbin/mysqld(do_command(THD*)+0xea) [0x7f3cb308d61a]
/usr/sbin/mysqld(handle_one_connection+0x23d) [0x7f3cb307f64d]
/lib/libpthread.so.0(+0x69ca) [0x7f3cb28dc9ca]
/lib/libc.so.6(clone+0x6d) [0x7f3cb141270d]
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort...
thd->query at 0x7f3ccb4021b0 = /* load collection com.lus111.db.bean.BnSource.inputSources */ select inputsourc0_.CHILD_SOURCE_UID as CHILD1_1_, inputsourc0_.PARENT_SOURCE_UID as PARENT2_1_, bnsource1_.UID as UID22_0_, bnsource1_.VERSION as VERSION22_0_, bnsource1_.MODIFIED_DATE as MODIFIED3_22_0_, bnsource1_.MODIFIED_BY as MODIFIED4_22_0_, bnsource1_.CREATED_DATE as CREATED5_22_0_, bnsource1_.CREATED_BY as CREATED6_22_0_, bnsource1_.IS_PUBLISHED as IS7_22_0_, bnsource1_.FORECAST_NAME_TRACKER as FORECAST8_22_0_, bnsource1_.CLIENT_UID as CLIENT9_22_0_, bnsource1_.COMPANY_UID as COMPANY10_22_0_, bnsource1_.LTUSER_UID as LTUSER11_22_0_, bnsource1_.FILE_UPLOAD_PDO_UID as FILE12_22_0_, bnsource1_.REPORT_UID as REPORT13_22_0_, bnsource1_.SOURCE_GENERATOR_UID as SOURCE14_22_0_ from Source_Inputs inputsourc0_ left outer join Source bnsource1_ on inputsourc0_.PARENT_SOURCE_UID=bnsource1_.UID where inputsourc0_.CHILD_SOURCE_UID=17950
thd->thread_id=264341
thd->killed=NOT_KILLED
The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
pure virtual method called
terminate called without an active exception
120127 7:57:03 [Note] Plugin 'FEDERATED' is disabled.
InnoDB: Log scan progressed past the checkpoint lsn 224 4208337564
120127 7:57:06 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
InnoDB: Doing recovery: scanned up to log sequence number 224 4213580288
..然后最终它恢复了。
我需要更担心这个吗？
小智 1
InnoDB 发现一行处于意外状态。到目前为止您还没有遇到这种情况，因为该状态下可能没有行。
这基本上是一个数据损坏问题，但如果这是一次性发生并且 InnoDB 能够正确恢复，我就不会太担心。
我检查了当前mysql版本的源代码，MySQL 5.5.19中的相应错误是“rem0rec.c line 561”，Google显示人们也遇到了这个错误，所以我认为更新MySQL对你没有帮助这个问题。