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  1. MariaDB Server
  2. MDEV-14400

Innodb_row_lock_current_waits increases to 18446744073709551615

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Details

    • Bug
    • Status: Open (View Workflow)
    • Major
    • Resolution: Unresolved
    • 10.1.22
    • None
    • None
    • mysql Ver 15.1 Distrib 10.1.22-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2
      Linux HOST 4.4.0-97-generic #120-Ubuntu SMP Tue Sep 19 17:28:18 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux


    Description

      Innodb_row_lock_current_waits increases rapidly from 0 to 18446744073709551615 and does not lower again.

      As you can see, this happens very fast and it has been happening more than once.

      Monitoring last hour

      Monitoring current week

      Monitoring last weeks

      Monitoring last months

      MariaDB [(none)]> show status like '%Innodb_row_lock_current%';
      +-------------------------------+----------------------+
      | Variable_name                 | Value                |
      +-------------------------------+----------------------+
      | Innodb_row_lock_current_waits | 18446744073709551615 |
      +-------------------------------+----------------------+
      1 row in set (0.00 sec)
       
      MariaDB [(none)]> select count(*) from information_schema.innodb_lock_waits;
      +----------+
      | count(*) |
      +----------+
      |        0 |
      +----------+
      1 row in set (0.00 sec)
       
      MariaDB [(none)]> select version();
      +--------------------------+
      | version()                |
      +--------------------------+
      | 10.1.22-MariaDB-1~xenial |
      +--------------------------+
      1 row in set (0.00 sec)
      

      Here, I dumped my environment.

      MariaDB [(none)]> show status;
      +--------------------------------------------------------------+-------------------------------------------------------------------------------------------------------------------+
      | Variable_name                                                | Value                                                                                                             |
      +--------------------------------------------------------------+-------------------------------------------------------------------------------------------------------------------+
      | wsrep_connected                                              | ON                                                                                                                |
      | wsrep_evs_state                                              | OPERATIONAL                                                                                                       |
      | wsrep_local_state_comment                                    | Synced                                                                                                            |
      | wsrep_provider_name                                          | Galera                                                                                                            |
      | wsrep_provider_vendor                                        | Codership Oy <info@codership.com>                                                                                 |
      | wsrep_provider_version                                       | 25.3.19(r3667)                                                                                                    |
      | wsrep_ready                                                  | ON                                                                                                                |
      

      Attachments

        1. galera.cnf
          0.7 kB
          M.Lauterbach
        2. last_hour.png
          11 kB
          M.Lauterbach
        3. last_months.png
          16 kB
          M.Lauterbach
        4. last_week.png
          13 kB
          M.Lauterbach
        5. last_weeks.png
          12 kB
          M.Lauterbach
        6. my.cnf
          2 kB
          M.Lauterbach
        7. mysql_innodb_data_pending_fsyncs_20171122_0200-0300.png
          15 kB
          M.Lauterbach
        8. mysql_process_runtime_20171122_0200-0300.png
          12 kB
          M.Lauterbach
        9. mysql_threads_connected_20171122_0200-0300.png
          10 kB
          M.Lauterbach
        10. mysql_threads_running_20171122_0200-0300.png
          12 kB
          M.Lauterbach
        11. show_status_20171122-0941
          15 kB
          M.Lauterbach

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            Unassigned Unassigned
            SelectNameFromDual M.Lauterbach
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            Dates

              Created:
              Updated:

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