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  1. MariaDB Server
  2. MDEV-38147

Mariadb error 1950 after SST

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Details

    • Bug
    • Status: Stalled (View Workflow)
    • Major
    • Resolution: Unresolved
    • 10.11.13, 10.11.14, 10.11.15, 11.4.6, 11.4.7, 11.4.8, 11.4.9
    • 10.11
    • Server
    • Q3/2026 Replic. Maintenance, Q3/2026 Replic. Development

    Description

      We are observing random occurrences of Error 1950 after performing SST via Mariabackup. We do not see this issue on MariaDB 10.5 or 10.6, but every newer version appears to be affected.

      After SST, the cluster node starts, but it becomes stuck in the following state:
      Cluster node will start but its stuck in:

      Variable_name: wsrep_ready
      Value: OFF

      Variable_name: wsrep_cluster_status
      Value: Disconnected

      Variable_name: wsrep_connected
      Value: OFF

      The issue occurs randomly, but it seems to be more frequent on clusters with higher traffic.

      Our Galera and GTID configuration follows the official documentation, and nothing was changed during the upgrade from 10.6.

      Switching wsrep_sst_method to rsync avoids the issue, so it seems to be related specifically to Mariabackup-based SST.

      It may be a problem on the Galera/MariaDB side, but we have not been able to identify the root cause. I have not been able to reproduce it.

      Any help would be appreciated.

      Thanks a lot

      Attachments

        1. donor_commands.rtf
          3 kB
        2. donor_config.rtf
          9 kB
        3. donor_log.rtf
          2 kB
        4. joiner_commands.rtf
          3 kB
        5. joiner_config.rtf
          9 kB
        6. joiner_log.rtf
          13 kB

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              Yurchenko Alexey Yurchenko
              Vanerek Roman
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                Updated:

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