MariaDB 10.2.2 Release Notes

Download Release Notes Changelog Overview of 10.2

Release date: 27 Sep 2016

MariaDB 10.2 is the current development 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 10.2.2 is a Beta release.

Thanks, and enjoy MariaDB!

Notable Changes

This is the first beta release in the MariaDB 10.2 series.

• InnoDB was merged from MySQL-5.7.14 (XtraDB is disabled in MariaDB-10.2.2 pending a similar merge)
  • Note that there have been numerous variable changes, both new variables and changes to defaults, for example innodb_strict_mode now defaults to ON.
  • InnoDB tables now support spatial indexes.
• ANALYZE TABLE has been re-implemented so as not to lock the entire table when collecting engine independent statistics (MDEV-7901)
• The CONNECT engine now supports the JDBC Table type (MDEV-9765)
• Internal CRC32 routines use the optimized implementation on Power8 — MDEV-9872
• Old GPL client library is gone; now MariaDB Server comes with the LGPL Connector/C client library (MDEV-9055)
• Recursive Common Table Expressions (MDEV-9864)
• Further improvements and bugfixing for CHECK CONSTRAINT (MDEV-7563) and DEFAULT with expressions (MDEV-10134)
• Optimizer improvement: conditions can be pushed down into non-mergeable views/derived tables (MDEV-9197)
• Support for NO PAD collations, with 88 new NO PAD collations included in the server (MDEV-9711)
• Table cache can automatically partition itself as needed to reduce the contention (MDEV-10296)
• The thread pool now gives higher priority to connections that have an active transaction. This can be controlled with the new thread_pool_prio_kickup_timer and thread_pool_priority system variables. (MDEV-10297)
• Window functions support extended. All standard aggregate functions (except GROUP_CONCAT) can be used as window functions. (MDEV-9526)
• New window functions added: LEAD, LAG, NTH_VALUE, FIRST_VALUE, LAST_VALUE. (MDEV-8091)
• Performance improvements for faster computing of window functions. Multiple window functions with compatible sorting criteria are computed during the same pass. (MDEV-10059)
• Default server_id changed from 0 to 1.
• New innochecksum options.

For a complete list of changes made in MariaDB 10.2.2, with links to detailed information on each push, see the changelog.