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  1. MariaDB Server
  2. MDEV-4353

multi_source replication conflict between different master connections on global variable relay_log_purge

Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Duplicate
    • 10.0.1
    • None
    • None

    Description

      In change_master() (sql_repl.cc), there is this code:

        if (need_relay_log_purge)
        {
          relay_log_purge= 1;

      This code is incorrect. The variable relay_log_purge is global, but
      change_master() is per-master-connection.

      This means that if one CHANGE MASTER needs relay log purge, and another CHANGE
      MASTER does not, they will overwrite each other and relay logs will be handled
      incorrectly for at least one of them when the slave threads start.

      There seems to be no code to handle this correctly per-connection.

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        Activity

          Shall we close it as a duplicate, or do you think there's something different comparing to MDEV-4117 that's worth keeping open?

          elenst Elena Stepanova added a comment - Shall we close it as a duplicate, or do you think there's something different comparing to MDEV-4117 that's worth keeping open?

          See also MDEV-4117

          elenst Elena Stepanova added a comment - See also MDEV-4117

          People

            Unassigned Unassigned
            knielsen Kristian Nielsen
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            Dates

              Created:
              Updated:
              Resolved:

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