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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

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            View 4 older comments
            rcannao René Cannaò added a comment -

            Bump via https://jira.mariadb.org/browse/CONC-302

            rcannao René Cannaò added a comment - Bump via https://jira.mariadb.org/browse/CONC-302
            markus makela markus makela added a comment -

            Blocks MXS-199.

            markus makela markus makela added a comment - Blocks MXS-199 .
            sanja Oleksandr Byelkin added a comment - - edited

            I risen priority because it block other tasks

            sanja Oleksandr Byelkin added a comment - - edited I risen priority because it block other tasks
            sanja Oleksandr Byelkin added a comment -

            functionality will be implemeted in MDEV-15477
            https://jira.mariadb.org/browse/MDEV-15477

            sanja Oleksandr Byelkin added a comment - functionality will be implemeted in MDEV-15477 https://jira.mariadb.org/browse/MDEV-15477
            markus makela markus makela added a comment - - edited

            Is MDEV-15477 fixed in 10.3.6? What does the fix version of 10.3.6 mean for this issue?

            markus makela markus makela added a comment - - edited Is MDEV-15477 fixed in 10.3.6? What does the fix version of 10.3.6 mean for this issue?

            People

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

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