The Ultimate Guide to High Availability with MariaDB

MariaDB 10.2.42 Release Notes

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Note: This page describes features in the source repository for MariaDB 10.2. There are currently no official packages or binaries available for download which contain the features. If you want to try out any of the new features described here you will need to get and compile the code yourself.

MariaDB 10.2 is a 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 10.2.42 is a Stable (GA) release.

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

Thanks, and enjoy MariaDB!

Notable Items

InnoDB

  • --skip-symbolic-links does not disallow .isl file creation (MDEV-26870)

Galera

  • Galera SST scripts should use ssl_capath (not ssl_ca) for CA directory (MDEV-27181)

Replication

  • Seconds behind master corrected from artificial spikes at relay-log rotation (MDEV-16091)
  • Statement rollback in binlog when transaction creates or drop temporary table is set right (MDEV-26833)

Packaging & Misc

Docker Library

  • Faster initialization by disabling binary logging during initialization (MDEV-27074)
  • mysql_upgrade can be run if needed using the environment variable MARIADB_AUTO_UPGRADE=1 (MDEV-25670)
  • A healthcheck script /usr/local/bin/healthcheck.sh is installed in the container with various checking options (MDEV-25434)
  • mysql@localhost user is created with the environment variable MARIADB_MYSQL_LOCALHOST_USER=1 and additional grants (beyond USAGE) with MARIADB_MYSQL_LOCALHOST_GRANTS={global grant list} (MDEV-27732)
  • skip innodb buffer pool loads/dumps on temporary startup/shutdown for faster startup/initialization, and accurate "healthcheck.sh --innodb_buffer_pool_loaded"
  • change group ownership on datadir/socket dir (issue #401)
  • log note about note on Securing system users, mysql_secure_installation not required (reddit suggestion)

Security

Upgrading from 10.2 versions earlier than 10.2.17 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.

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.

Changelog

For a complete list of changes made in MariaDB 10.2.42 with links to detailed information on each push, see the changelog.

Be notified of new MariaDB Server releases automatically by subscribing to the MariaDB Foundation community announce 'at' lists.mariadb.org 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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