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  1. MariaDB Server
  2. MDEV-15307

MariaDB 10.1 crashing on binlog switch to new file

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      User is encountering MariaDB 10.1.28 crashing on binlog switch to new file.

      180209 13:45:23 [ERROR] 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.
       
      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
       
      Server version: 10.1.28-MariaDB
      key_buffer_size=16777216
      read_buffer_size=262144
      max_used_connections=56
      max_threads=1002
      thread_count=58
      It is possible that mysqld could use up to
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 806565 K bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
      

      Query:

      Query (0x7fa111acc020): delete from task where starttimeutc <'2017-09-01 12:12:44' LIMIT 100000
      

      They are trying to delete 100000 rows from a table with approx 10710898 rows.

      Their max_binlog_size = 2M, which has been recommended to them to increase. But still, there should not be a crash.

      Note that the stack traces look very similar to these:

      https://jira.mariadb.org/browse/MDEV-14290
      https://jira.mariadb.org/browse/MDEV-14314

      However, the above both mention RocksDB, which this user is not using. However, Andrii stated in the latter report that, "According to MDEV-14290 and my tests the crash happens on any binlog rotation, so I will mark this as duplicate", so perhaps it is not limited to RocksDB. If it could be related, the fix in 14290 was only applied to 10.2 though, per the bug report.

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              Assignee:
              Elkin Andrei Elkin
              Reporter:
              ccalender Chris Calender
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