MariaDB 10.9.1 Release Notes

The most recent release of MariaDB 10.9 is:
MariaDB 10.9.8 Stable (GA) Download Now

Download 10.9.1 Release Notes Changelog Overview of 10.9

Release date: 20 May 2022

Do not use non-stable (non-GA) releases in production!

MariaDB 10.9 is a current development series of MariaDB. It is an evolution of MariaDB 10.8 with several entirely new features.

MariaDB 10.9.1 is a Release Candidate (RC) release.

For an overview of MariaDB 10.9 see the What is MariaDB 10.9? page.

Thanks, and enjoy MariaDB!

Notable Items




  • Incorrect binlogs after Galera SST using rsync and mariabackup (MDEV-27524)
  • mariabackup does not detect multi-source replication slave (MDEV-21037)
  • Useless warning "InnoDB: Allocated tablespace ID <id> for <tablename>, old maximum was 0" during backup stage (MDEV-27343)
  • mariabackup prepare fails for incrementals if a new schema is created after full backup is taken (MDEV-28446)


  • Query performance degradation in newer MariaDB versions when using many tables (MDEV-28073)
  • A SEGV in Item_field::used_tables/update_depend_map_for_order... (MDEV-26402)
  • ANALYZE FORMAT=JSON fields are incorrect for UNION ALL queries (MDEV-27699)
  • Subquery in an UPDATE query uses full scan instead of range (MDEV-22377)
  • Assertion `item1->type() == Item::FIELD_ITEM ... (MDEV-19398)
  • Server crashes in Expression_cache_tracker::fetch_current_stats (MDEV-28268)
  • MariaDB server crash at Item_subselect::init_expr_cache_tracker (MDEV-26164, MDEV-26047)
  • Crash with union of my_decimal type in ORDER BY clause (MDEV-25994)
  • SIGSEGV in st_join_table::cleanup (MDEV-24560)
  • Assertion `!eliminated' failed in Item_subselect::exec (MDEV-28437)




For a complete list of changes made in MariaDB 10.9.1, with links to detailed information on each push, see the changelog.


For a full list of contributors to MariaDB 10.9.1, see the MariaDB Foundation release announcement.

Do not use non-stable (non-GA) releases in production!

Be notified of new MariaDB Server releases automatically by subscribing to the MariaDB Foundation community announce 'at' announcement list (this is a low traffic, announce-only list). MariaDB plc customers will be notified for all new releases, security issues and critical bug fixes for all MariaDB plc products thanks to the Notification Services.

MariaDB may already be included in your favorite OS distribution. More information can be found on the Distributions which Include MariaDB page.


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