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Since MDEV-18778, timezone tables get changed to innodb to allow them to be replicated to other galera nodes. Even without galera, timezone tables could be declared innodb. With the standalone innodb tables, the mysql_tzinfo_to_sql takes approximately 27 seconds. With the transactions enabled in this patch, 1.2 seconds is the approximate load time. While explicit checks for the engine of the time zone tables could be done, or checks against !opt_skip_write_binlog, non-transactional storage engines will just ignore the transactional state without even a warning so its safe to enact globally. Leap seconds are pretty much ignored as they are a single insert statement and have gone out of favour as they have caused MariaDB stalls in the past.
MariaDB is designed as a drop-in replacement of MySQL(R) with more features, new storage engines, fewer bugs, and better performance. MariaDB is brought to you by the MariaDB Foundation. Please read the CREDITS file for details about the MariaDB Foundation, and who is developing MariaDB. MariaDB is developed by many of the original developers of MySQL who now work for the MariadB Foundation and the MariaDB Corporation, and by many people in the community. MySQL, which is the base of MariaDB, is a product and trademark of Oracle Corporation, Inc. For a list of developers and other contributors, see the Credits appendix. You can also run 'SHOW authors' to get a list of active contributors. A description of the MariaDB project and a manual can be found at: http://mariadb.org/ https://mariadb.com/kb/en/ https://mariadb.com/kb/en/mariadb-vs-mysql-features/ https://mariadb.com/kb/en/mariadb-versus-mysql-features/ https://mariadb.com/kb/en/mariadb-versus-mysql-compatibility/ As MariaDB is a full replacement of MySQL, the MySQL manual at http://dev.mysql.com/doc is generally applicable. More help is available from the Maria Discuss mailing list https://launchpad.net/~maria-discuss and the #maria IRC channel on Freenode. *************************************************************************** NOTE: MariaDB is specifically available only under version 2 of the GNU General Public License (GPLv2). (I.e. Without the "any later version" clause.) This is inherited from MySQL. Please see the README file in the MySQL distribution for more information. License information can be found in the COPYING, COPYING.LESSER, and COPYING.thirdparty files. *************************************************************************** IMPORTANT: Bug and/or error reports regarding MariaDB should be submitted at: https://jira.mariadb.org For reporting security vulnerabilities see: https://mariadb.org/about/security-policy/ Bugs in the MySQL code can also be submitted at: http://bugs.mysql.com The code for MariaDB, including all revision history, can be found at: https://github.com/MariaDB/server ***************************************************************************