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  1. MariaDB Server
  2. MDEV-5156

Long semaphore wait crash

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: 5.5.33a
    • Fix Version/s: 5.5.34
    • Component/s: None
    • Labels:
    • Environment:
      Debian Squeeze, 64 bit

      Description

      Our MariaDB server is crashing on long semaphor wait. It is happening usually at night when database backups are running (but sometimes also in the middle of the day). I'm 100% sure it's related to one of our users because when i moved him to different server, the problem moves with him. There were enough of memory and we had the same problem with MySQL 5.5. Everytime it happend, the mentioned user is running simultanious SELECT and TRUNCATE on the same table.

        Attachments

        1. global_variables.txt
          11 kB
        2. index_products.frm
          8 kB
        3. my.cnf
          6 kB
        4. mysql.log.gz
          53 kB
        5. mysql2.log.gz
          98 kB

          Activity

            People

            Assignee:
            jplindst Jan Lindström
            Reporter:
            azurit azurit
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              Dates

              Created:
              Updated:
              Resolved: