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  1. MariaDB Server
  2. MDEV-3823

Backport WL#5917 sufficient to be able to replicate row events from mysql 5.6 master with default options



    • Task
    • Status: Closed (View Workflow)
    • Minor
    • Resolution: Fixed
    • 10.0.7
    • None
    • None


      MySQL 5.6 has WL#5917, which introduces new binlog events for row-based
      replication, enabled by default.

      These new events are unknown by earlier slave servers, so replication from
      MySQL server 5.6.7 to current MariaDB 10.0.0 fails on the first row event with
      errno 1594 (Relay log read failure: Could not parse relay log event entry).

      MySQL 5.5 slave is similarly affected.

      There is an option --log-bin-use-v1-row-events which can be enabled on the
      master, thereby using the old event format for row events and allowing
      replication to MariaDB 10.0 slave to work.

      However, it would be good to backport the new row event format to MariaDB
      10.0, so it could work as a slave against MySQL 5.6 masters with default

      The commit comment for WL#5917 reads like the new row format is mostly to be
      able to include some extra information used by NDB cluster, so it may be that
      backporting could be as easy as ignoring any extra information when reading
      events from the master.

      To reproduce:

      # Start servers with default parameters, plus server-ids and log-bin on MySQL 5.6.7 (to be a master)
      # Start replication MySQL 5.6.7 => MariaDB 10.0.0
      # On MySQL 5.6.7 (master) 
      set binlog_format=row;
      create table t1 (i int);
      insert into t1 values (1);
      # On MariaDB 10.0.0 (slave) observe replication failure

      bzr branch 10.0-serg

      revision-id: wlad@montyprogram.com-20121029155215-6neh71dtrxywpyeb
      date: 2012-10-29 16:52:15 +0100
      revno: 3463


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              serg Sergei Golubchik
              elenst Elena Stepanova
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