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  1. MariaDB ColumnStore
  2. MCOL-4841

ExeMgr Crashes after large join - IDB-2004: Cannot connect to ExeMgr - requires restart

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Critical
    • Resolution: Fixed
    • 6.2.2
    • 6.3.1
    • None
    • 2021-10, 2021-11, 2021-12, 2021-13, 2021-14, 2021-15, 2021-16, 2021-17

    Description

      Exemgr (sometimes primproc) crashes on large queries with joins in SkySQL and docker. Requiring a restart of the cluster/node to spin exemgr back up.

      clients and users see the following when sending additional queries
      ERROR 1815 (HY000): Internal error: IDB-2004: Cannot connect to ExeMgr.

      Expected Results:
      A graceful error of the query, ideally with a reason why (need more ram, storage, cpu etc.) that doesn't require restarting services to make other queries afterward.

      Steps to reproduced attached along with a video of the crash

      Attachments

        1. crashDockerReproductionSteps
          1.0 kB
          Allen Herrera
        2. DockerExemgrCrash.mov
          9.62 MB
          Allen Herrera

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. MCOL-5009 test202 causes deadlock

          • Major - Major loss of function.
          • Closed
          relates to

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. MCOL-4626 Columnstore cluster becomes non operational when running out of memory on a query

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Activity

            People

              dleeyh Daniel Lee (Inactive)
              allen.herrera Allen Herrera
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              Dates

                Created:
                Updated:
                Resolved:

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