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  1. MariaDB Server
  2. MDEV-11956

Get last_gtid in OK packet.

Details

    Description

      Hi,

      the GTID of the last transaction is exposed via the last_gtid session variable ([1]). This needs a round-trip to the server, which could be unwanted in some situations.

      [1]: https://mariadb.com/kb/en/mariadb/gtid/#last_gtid

      Upstream MySQL implements a way to get the GTID of the last transaction at the protocol level in the OK packet. ([2], [3] and [4]). I think this would be a good feature in MariaDB Server.

      [2]: https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_session_track_gtids

      [3]: https://dev.mysql.com/doc/refman/5.7/en/mysql-session-track-get-first.html

      [4]: https://dev.mysql.com/doc/refman/5.7/en/mysql-session-track-get-next.html

      Please also consider this improvement on the upstream implementation: Request transaction GTID in OK packet on COMMIT (without needing a round-trip) - [5].

      [5]: https://bugs.mysql.com/bug.php?id=84748

      Many thanks,

      JFG

      Attachments

        Issue Links

          blocks

          New Feature - A new feature of the product, which has yet to be developed. MXS-1778 Consistent reads by the utlization of GTID in OK packet.

          • Major - Major loss of function.
          • Closed
          duplicates

          Task - A task that needs to be done. MDEV-15170 Implement SESSION_TRACK_GTIDS

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-15477 SESSION_SYSVARS_TRACKER does not track last_gtid

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

          Bug - A problem which impairs or prevents the functions of the product. MDEV-15477 SESSION_SYSVARS_TRACKER does not track last_gtid

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

          Bug - A problem which impairs or prevents the functions of the product. CONC-302 SESSION_TRACK_GTIDS not implemented

          • Major - Major loss of function.
          • Closed

          Activity

            Transition Time In Source Status Execution Times
            Oleksandr Byelkin made transition -
            Open In Progress
            		434d 18h 14m 1
            Oleksandr Byelkin made transition -
            In Progress Stalled
            		5m 18s 1
            Oleksandr Byelkin made transition -
            Stalled Closed
            		1m 20s 1

            People

              sanja Oleksandr Byelkin
              jeanfrancois.gagne Jean-François Gagné
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                Updated:
                Resolved:

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