CentOS 6.8, Linux mmsc-db1.ei.iot1.com 2.6.32-642.el6.x86_64 #1 SMP Tue May 10 17:27:01 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Master/Master replication setup two nodes involved, both have the same crashes.

All tables are innodb.

Rpm's installed from official mariadb repos.

Please try to upgrade to the latest 10.2 and see if the problem goes away. There have been numerous fixes on the side of locking and InnoDB, it's quite possible that this particular problem has been fixed as well.
I'll keep the bug report open until you check with the latest 10.2.11.

I have found a configuration error that has most likely been the cause of this issue. The servers in question only had 64GB of ram. So my innodb_buffer_pool setting was way to high. I have not crashed since lowering that value to 45GB. I do plan to upgrade to 10.2.11 as soon as I have a chance to get the upgrade scheduled.

The innodb_buffer_pool was not the cause of the crash. Crashing has resumed. Will update this ticket again when I get on 10.2.11.

treyormsbee, have you had a chance to check whether newer versions work for you?
If you haven't gotten on 10.2.11 yet, I recommend you to skip 10.2.11 and wait till 10.2.12 is released (it should be very soon), and try then.

I have not been able to schedule the upgrade as of yet. I hope to get permission to do it this week or next. If I can I will stall until the release of 10.2.12. Thank you!

I have now upgraded to 10.2.12 as of today. Ill report back if the crash happens again. It generally happens multiple times per day so I should know in 24-48 hours if all is good or not.

Thanks,
Trey

EDIT-----It has been 6 almost 7 days now and I have not had a single crash since the update. I think this can be closed now. If it happens to creep back in ill open a new ticket and reference this one.

Thanks,
Trey-----EDIT

I spoke too soon, the log scraper I had looking for this was not catching the crash any more.

2018-02-04 03:15:01 0x7f3fc4220700 InnoDB: Assertion failure in file /home/buildbot/buildbot/padding_for_CPACK_RPM_BUILD_SOURCE_DIRS_PREFIX/mariadb-10.2.12/storage/innobase/lock/lock0lock.cc line 8204
InnoDB: Failing assertion: lock != m_wait_lock || (innodb_lock_schedule_algorithm == INNODB_LOCK_SCHEDULE_ALGORITHM_VATS && !thd_is_replication_slave_thread(lock->trx->mysql_thd))
InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to https://jira.mariadb.org/
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/5.7/en/forcing-innodb-recovery.html
InnoDB: about forcing recovery.
180204 3:15:01 [ERROR] 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.

To report this bug, see https://mariadb.com/kb/en/reporting-bugs

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.

Server version: 10.2.12-MariaDB-log
key_buffer_size=134217728
read_buffer_size=1048576
max_used_connections=32
max_threads=4098
thread_count=41
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 8611221 K bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f3354001288
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 = 0x7f3fc421f1e0 thread_stack 0x40000
(my_addr_resolve failure: fork)
/usr/sbin/mysqld(my_print_stacktrace+0x2b) [0x7f3fcae4ea2b]
/usr/sbin/mysqld(handle_fatal_signal+0x535) [0x7f3fca91b915]
/lib64/libpthread.so.0(+0xf7e0) [0x7f3fc9e427e0]
/lib64/libc.so.6(gsignal+0x35) [0x7f3fc849d5e5]
/lib64/libc.so.6(abort+0x175) [0x7f3fc849edc5]
/usr/sbin/mysqld(+0x479193) [0x7f3fca6eb193]
/usr/sbin/mysqld(+0x88f4ea) [0x7f3fcab014ea]
/usr/sbin/mysqld(+0x897f2d) [0x7f3fcab09f2d]
/usr/sbin/mysqld(+0x898471) [0x7f3fcab0a471]
/usr/sbin/mysqld(+0x898757) [0x7f3fcab0a757]
/usr/sbin/mysqld(+0x8988a6) [0x7f3fcab0a8a6]
/usr/sbin/mysqld(+0x898f15) [0x7f3fcab0af15]
/usr/sbin/mysqld(+0x8998e0) [0x7f3fcab0b8e0]
/usr/sbin/mysqld(+0x904a59) [0x7f3fcab76a59]
/usr/sbin/mysqld(+0x909aad) [0x7f3fcab7baad]
/usr/sbin/mysqld(+0x909efa) [0x7f3fcab7befa]
/usr/sbin/mysqld(+0x918df6) [0x7f3fcab8adf6]
/usr/sbin/mysqld(+0x85a89f) [0x7f3fcaacc89f]
/usr/sbin/mysqld(handler::ha_write_row(unsigned char*)+0x177) [0x7f3fca9252c7]
/usr/sbin/mysqld(write_record(THD*, TABLE*, st_copy_info*)+0x71) [0x7f3fca7822b1]
/usr/sbin/mysqld(mysql_insert(THD*, TABLE_LIST*, List<Item>&, List<List<Item> >&, List<Item>&, List<Item>&, enum_duplicates, bool)+0x117c) [0x7f3fca7884dc]
/usr/sbin/mysqld(mysql_execute_command(THD*)+0x2e42) [0x7f3fca79ca62]
/usr/sbin/mysqld(mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool)+0x29a) [0x7f3fca7a217a]
/usr/sbin/mysqld(Query_log_event::do_apply_event(rpl_group_info*, char const*, unsigned int)+0x884) [0x7f3fca9f0ec4]
/usr/sbin/mysqld(Log_event::apply_event(rpl_group_info*)+0x43) [0x7f3fca733a03]
/usr/sbin/mysqld(+0x4b4cc3) [0x7f3fca726cc3]
/usr/sbin/mysqld(handle_slave_sql+0x1810) [0x7f3fca72c780]
/lib64/libpthread.so.0(+0x7aa1) [0x7f3fc9e3aaa1]
/lib64/libc.so.6(clone+0x6d) [0x7f3fc8553aad]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0x7f3354143532): INSERT INTO redacted_tbl ( redacted_clm1, redacted_clm2, redacted_clm3 ) VALUES ( 'redacted', 'redacted', '1' )

Connection ID (thread ID): 11
Status: NOT_KILLED

Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on

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.

Anyone able to comment on this?

treyormsbee, so, you repeated the same issue with 10.2.12. Have you tried a newer release, such as 10.2.21? The locking should have changed a little by the following:

• 10.2.17, 10.3.9: MDEV-16664 reverted the default setting to innodb_lock_schedule_algorithm=fcfs because of apparent problems
• 10.2.19, 10.3.11: MDEV-17073 INSERT…ON DUPLICATE KEY UPDATE became more deadlock-prone

MDEV-17073 should not have any direct impact on this assertion failure, but MDEV-16664 could.