MySQL Forums
Forum List  »  NDB clusters

NDB crash on mysqld node after an ALTER statement
Posted by: Ben Clewett
Date: November 12, 2012 10:36AM

Hi MySQL,

Version 7.2.8

I have had another crash after an ALTER statement.

One mysqld node replying with this after every query:

ERROR 1296 (HY000): Got error 4547 'RecordSpecification has overlapping offsets' from NDBCLUSTER

Another mysqld node core-dumped with error at end of this email.

This keeps happening to us. I have been trying and failing to make this product stable for several months now. I would really appreciate some feedback on why we keep having crashed, and whether Oracle/MySQL have any plans to try and make this system stable?

Regards,

Ben Clewett

121112 16:04:19 [Note] NDB Binlog: DISCOVER TABLE Event: REPL$ndb/fl_state
121112 16:04:19 [Note] NDB Binlog: logging ./ndb/fl_state (UPDATED,USE_WRITE)
16:04:19 UTC - mysqld got signal 11 ;
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=8388608
read_buffer_size=5242880
max_used_connections=35
max_threads=200
thread_count=33
connection_count=33
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 2058485 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f5a980009b0
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 = 7f5ab78dcea8 thread_stack 0x40000
/usr/sbin/mysqld(my_print_stacktrace+0x35)[0x81c7f5]
/usr/sbin/mysqld(handle_fatal_signal+0x403)[0x6e9383]
/lib64/libpthread.so.0(+0xfd00)[0x7f5ab7536d00]
/lib64/libc.so.6(+0x11abdf)[0x7f5ab6811bdf]
/usr/sbin/mysqld[0x84ced7]
/usr/sbin/mysqld(ndb_binlog_thread_func+0x1af4)[0x854ba4]
/lib64/libpthread.so.0(+0x7f05)[0x7f5ab752ef05]
/lib64/libc.so.6(clone+0x6d)[0x7f5ab67d210d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0): is an invalid pointer
Connection ID (thread ID): 1
Status: 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.

Options: ReplyQuote


Subject
Views
Written By
Posted
NDB crash on mysqld node after an ALTER statement
2233
November 12, 2012 10:36AM


Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.