Athens - Replication in MariaDB - notes

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Overview of Replication in MariaDB: Replication

In MariaDB 5.3:

  • Enhancements for START TRANSACTION WITH CONSISTENT SNAPSHOT
    • Is actually consistent now ...
    • non-blocking slave privisioning
  • Annotation of row-based replication events with the original SQL statement
    • A separate, but very similar, implementation is in 5.6
  • Row-based replication for tables with no primary key
  • PBXT consistent commit ordering
  • Binlog Event Checksums (backport from MySQL 5.6

To be in MariaDB 5.5

  • @@do_not_replicate

Additional:

  • Fixing rpl_transaction_enabled in case we crash and rollback during XA

Misc:

  • This preview also includes a small change to make mysqlbinlog omit redundatn use statements around BEGIN, SACEPOINT, COMMIT, and ROLLBACK events when reading MySQL 5.0 binlogs.
  • The preview included a feature --innodb-release-locks-early. However we decided to omit this feature from future MariaDB releases because of a fundamental design bug, Bug #798213

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