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  1. MariaDB Server
  2. MDEV-37356

Annotate_rows written in a 'random' position

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      Ensure that Annotate_rows is always written direct after GTID information,
      before any table_map events. Before this patch the event could be written in a random position in the binary log. This change make the place of the Annotate_rows event predictable.

      When mixing transactional and not transactional tables in the same transaction, the Annotate rows event was not always written in the
      case of a rollback. This is now fixed.
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      Ensure that Annotate_rows is always written direct after GTID information, before any table_map events. Before this patch the event could be written in a random position in the binary log. This change make the place of the Annotate_rows event predictable. When mixing transactional and not transactional tables in the same transaction, the Annotate rows event was not always written in the case of a rollback. This is now fixed.

    Description

      Annotate_rows event are written in a 'random' position if one combines non transactional and transactional tables.

      This can be seen in the test rpl.rpl_mixed_mixing_engines

      This can be fixed by writing the Annotate_rows event into the non transactional cache if there are table maps that are not transactional. If not, write the event into the transactional cache.
      This ensures that the Annotate_rows event is always written to the binary log before any table map events.

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-37475 Annotate-rows-log event of statement with stored routine misleads in describing queries

          • Major - Major loss of function.
          • Open

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              monty Michael Widenius
              monty Michael Widenius
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