Hi,
after upgrading from version 7.1.18 to 7.2.8 we get regularly a crash in
all systems under the conditions described in bugreport #65979:
09:38:47 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=268435456
read_buffer_size=262144
max_used_connections=1
max_threads=200
thread_count=1
connection_count=1
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads =
418037 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.
Thread pointer: 0x1ed3b260
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 = 496f3e98 thread_stack 0x40000
/usr/sbin/mysqld(my_print_stacktrace+0x35)[0x852145]
/usr/sbin/mysqld(handle_fatal_signal+0x3e1)[0x708a01]
/lib64/libpthread.so.0[0x327d40de70]
/lib64/libc.so.6(strlen+0x30)[0x327c876170]
/usr/sbin/mysqld[0x9fabf0]
/usr/sbin/mysqld(ndb_binlog_thread_func+0x19da)[0xa0166a]
/lib64/libpthread.so.0[0x327d4062f7]
/lib64/libc.so.6(clone+0x6d)[0x327c8ce85d]
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
I can repduce this crash by doing a "replace into" statement into a
table, where all columns ar part of the primary key.
e.g.:
'CREATE TABLE `sec_type` (
`client_id` varchar(10) NOT NULL,
`sec_type` varchar(10) NOT NULL,
PRIMARY KEY (`client_id`,`sec_type`),
KEY `SECTYPE` (`client_id`,`sec_type`)
) ENGINE=ndbcluster DEFAULT CHARSET=latin1'
insert into sec_type values('1','TPIN');
replace into sec_type values('1','TPIN');
The "replace" crashes all SQL nodes in the cluster with activated binary
logging.
Usually we install the generic binaries package, but a test with RPMs
showed the same crash.
All application developers gave me their word, that they do never use
this "replace". The general query log did not show any suspicious
statements.
Any ideas, how to find the killer statement and/or how to solve this
problem?
I do not want to downgrade to 7.1.* again.
--
kind regards
Hendrik Woltersdorf
XCOM AG
Tel.: 0375/27008-580
Tel. mobil: 015222999584
Email: Hendrik.Woltersdorf@stripped
