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  1. MariaDB Server
  2. MDEV-22617

Galera node crashes when trying to log to slow_log table in streaming replication mode

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: 10.4.13
    • Fix Version/s: 10.5.4
    • Component/s: Galera
    • Labels:
      None

      Description

      When having the following configuration enabled

      wsrep_trx_fragment_unit='bytes'
      wsrep_trx_fragment_size=10240000
       
      slow_query_log
      log_output=TABLE
      

      any slow query, e.g. SELECT SLEEP(10);, will crash the executing node with the following backtrace:

      mysqld: /__w/1/s/padding_for_CPACK_RPM_BUILD_SOURCE_DIRS_PREFIX_ON_ES_BACKUP_DEBUGSOURCE/wsrep-lib/include/wsrep/client_state.hpp:367: int wsrep::client_state::after_row(): Assertion `state_ == s_exec' failed.
      200518 15:09:08 [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: 10.4.12-6-MariaDB-enterprise-log
      key_buffer_size=134217728
      read_buffer_size=2097152
      max_used_connections=3
      max_threads=102
      thread_count=12
      It is possible that mysqld could use up to
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 760260 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
      Thread pointer: 0x7f4f40016358
      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 = 0x7f4f44a31d98 thread_stack 0x49000
      /usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x559e2a3b008e]
      /usr/sbin/mysqld(handle_fatal_signal+0x515)[0x559e29e15f55]
      /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890)[0x7f4f6bb7b890]
      /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7f4f6a4afe97]
      /lib/x86_64-linux-gnu/libc.so.6(abort+0x141)[0x7f4f6a4b1801]
      /lib/x86_64-linux-gnu/libc.so.6(+0x3039a)[0x7f4f6a4a139a]
      /lib/x86_64-linux-gnu/libc.so.6(+0x30412)[0x7f4f6a4a1412]
      /usr/sbin/mysqld(+0x87ffcf)[0x559e29e17fcf]
      /usr/sbin/mysqld(handler::ha_write_row(unsigned char const*)+0x256)[0x559e29e21966]
      /usr/sbin/mysqld(Log_to_csv_event_handler::log_slow(THD*, my_hrtime_t, char const*, unsigned long, unsigned long long, unsigned long long, bool, char const*, unsigned long)+0x6de)[0x559e29ef4bae]
      /usr/sbin/mysqld(LOGGER::slow_log_print(THD*, char const*, unsigned long, unsigned long long)+0x239)[0x559e29eef9d9]
      /usr/sbin/mysqld(log_slow_statement(THD*)+0x134)[0x559e29bf5724]
      /usr/sbin/mysqld(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool)+0x699)[0x559e29c05ff9]
      /usr/sbin/mysqld(do_command(THD*)+0x150)[0x559e29c08650]
      /usr/sbin/mysqld(do_handle_one_connection(CONNECT*)+0x203)[0x559e29ce70b3]
      /usr/sbin/mysqld(handle_one_connection+0x3d)[0x559e29ce71cd]
      /lib/x86_64-linux-gnu/libpthread.so.0(+0x76db)[0x7f4f6bb706db]
      /lib/x86_64-linux-gnu/libc.so.6(clone+0x3f)[0x7f4f6a59288f]
      

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              Assignee:
              monty Michael Widenius
              Reporter:
              hholzgra Hartmut Holzgraefe
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              1 Vote for this issue
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                Dates

                Created:
                Updated:
                Resolved: