MariaDB 10.2.20 Release Notes

The most recent release of MariaDB 10.2 is:
MariaDB 10.2.44 Stable (GA) Download Now

Download Release Notes Changelog Overview of 10.2

Release date: 24 Dec 2018

MariaDB 10.2 is the previous stable series of MariaDB. It is an evolution of MariaDB 10.1 with several entirely new features not found anywhere else and with backported and reimplemented features from MySQL 5.6 and 5.7.

MariaDB 10.2.20 will be a Stable (GA) release.

For an overview of MariaDB 10.2 see the What is MariaDB 10.2? page.

Upgrading from earlier 10.2.x versions is highly recommended for all Galera users due to bug MDEV-12837 which caused serious stability issues with earlier versions. See the bug issue page for more information.

Thanks, and enjoy MariaDB!

Notable Changes

  • Data type validation:
    • MDEV-17833: ALTER TABLE is not enforcing prefix index size limit
    • MDEV-17989: InnoDB: Failing assertion: dict_tf2_is_valid(flags, flags2)
  • MDEV-17765: Locking bug fix for SPATIAL INDEX
  • MDEV-17923, MDEV-17904, MDEV-17938: Fixes for FULLTEXT INDEX
  • Fixes for regressions introduced in MariaDB Server 10.2.19 by the backup-safe TRUNCATE TABLE (MDEV-13564, innodb_safe_truncate=ON) and innodb_undo_log_truncate:
  • Several improvements to MariaDB Server and backup for dealing with encrypted or page_compressed pages:
    • MDEV-12112: corruption in encrypted table may be overlooked
    • MDEV-17958: On little-endian systems, remove bug-compatible variant of innodb_checksum_algorithm=crc32
    • MDEV-17957: Make innodb_checksum_algorithm stricter for strict_* values
    • MDEV-18025: Mariabackup fails to detect corrupted page_compressed=1 tables
  • The Galera library in the repositories has been updated to version 25.3.25

When upgrading from MariaDB 10.2.16 or earlier to MariaDB 10.2.17 or higher,
running mysql_upgrade is required due to changes introduced in MDEV-14637.


For a complete list of changes made in MariaDB 10.2.20 with links to detailed information on each push, see the changelog.


For a full list of contributors to MariaDB 10.2.20, see the MariaDB Foundation release announcement.

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 Corporation customers will be notified for all new releases, security issues and critical bug fixes for all MariaDB Corporation 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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