MariaDB 10.2.2 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 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.

Do not use beta releases on production systems!

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

Thanks, and enjoy MariaDB!

Notable Changes

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

  • ANALYZE TABLE has been re-implemented so as not to lock the entire table while 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 (MDEV-9711)
  • Table cache can automatically partition itself as needed to reduce the contention (MDEV-10296)
  • InnoDB was merged from MySQL-5.7.14 (XtraDB is disabled in MariaDB-10.2.2 pending a similar merge)
  • Thread pool now gives higher priority to connections that have an active transaction (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)

Notes

Do not use beta releases on production systems!

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


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