Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-5785

RBR between old master and new slave breaks on direct updates to system tables

Details

    • Bug
    • Status: Closed (View Workflow)
    • Minor
    • Resolution: Won't Fix
    • 5.5.36, 10.0.8
    • N/A
    • None
    • None

    Description

      Updates of the kind

      insert into mysql.tables_priv (host,db,user,table_name,grantor,table_priv) VALUES ('localhost','test','user','t1','root@localhost','Select');

      break replication, if it's set up between an older master (having short User field and such) to a newer slave, with increased field length:

      Last_Error: Column 2 of table 'mysql.tables_priv' cannot be converted from type 'char(16)' to type 'char(80)'

      Such updates shouldn't normally be done, but they are not forbidden and in some cases are useful, e.g. for bulk updates.
      Besides, they can come if the data is restored from mysqldump backup/

      Attachments

        Issue Links

          relates to

          Task - A task that needs to be done. MDEV-4332 Increase username length from 16 characters

          • Major - Major loss of function.
          • Closed

          Task - A task that needs to be done. MDEV-5705 replication testing: 5.6->10.0

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Stalled

          Activity

            serg Sergei Golubchik added a comment -

            True, and there's nothing we can do about it. A workaround is to specify

            SET GLOBAL SLAVE_TYPE_CONVERSIONS='ALL_NON_LOSSY';

            serg Sergei Golubchik added a comment - True, and there's nothing we can do about it. A workaround is to specify SET GLOBAL SLAVE_TYPE_CONVERSIONS= 'ALL_NON_LOSSY' ;

            People

              serg Sergei Golubchik
              elenst Elena Stepanova
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Git Integration

                  Error rendering 'com.xiplink.jira.git.jira_git_plugin:git-issue-webpanel'. Please contact your Jira administrators.