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MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
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Thirunarayanan Balathandayuthapani 2fdacdcd69 MDEV-30802 Assertion `index->is_btree() || index->is_ibuf()' failed in btr_search_guess_on_hash 
Problem:
=======
 - There is a race condition between purge and rollback of alter
operation. Alter rollback marks the index as corrupted.
At the same time, purge is working on the same index and leads
to assert failure. This is caused by
commit 7c0b9c6020 (MDEV-15250).

Solution:
=======
 - After MDEV-15250, InnoDB logs the operation only at the
end of transaction commit and applies the log in
ha_innobase::commit_inplace_alter_table() and
also via dml thread. So there is no need for purge to work
on uncommitted index.

The assertion would fail in the test innodb.innodb-index-online
when the following call is added to the start of the function
row_purge_remove_sec_if_poss_leaf():
if (!index->is_committed()) sleep(5);
2023-09-19 19:04:53 +05:30
.github Merge 10.5 into 10.6 2023-05-19 14:24:09 +03:00
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libmariadb@c0ddc2c8cf New CC 3.3 2023-08-01 16:40:10 +02:00
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sql-common Merge branch '10.5' into 10.6 2023-08-01 15:08:52 +02:00
storage MDEV-30802 Assertion `index->is_btree() || index->is_ibuf()' failed in btr_search_guess_on_hash 2023-09-19 19:04:53 +05:30
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wsrep-lib@151d4f8591 galera: wsrep-lib sumbodule update 2023-09-12 00:38:48 +02:00
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CONTRIBUTING.md
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KNOWN_BUGS.txt
README.md
THIRDPARTY
VERSION bump the VERSION 2023-08-14 13:47:13 -04:00

README.md

Code status:

  • Appveyor CI status ci.appveyor.com

MariaDB: The open source relational database

MariaDB was 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 and the MariaDB Corporation. 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 Corporation, the MariaDB Foundation 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:

https://mariadb.org

https://mariadb.com/kb/en/

https://mariadb.com/kb/en/mariadb-vs-mysql-features/

https://mariadb.com/kb/en/mariadb-versus-mysql-compatibility/

https://mariadb.com/kb/en/new-and-old-releases/

Help

More help is available from the Maria Discuss mailing list https://launchpad.net/~maria-discuss, MariaDB's Zulip instance, https://mariadb.zulipchat.com/

Live QA for beginner contributors

MariaDB has a dedicated time each week when we answer new contributor questions live on Zulip. From 8:00 to 10:00 UTC on Mondays, and 10:00 to 12:00 UTC on Thursdays, anyone can ask any questions they’d like, and a live developer will be available to assist.

New contributors can ask questions any time, but we will provide immediate feedback during that interval.

Licensing

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 file. Third party license information can be found in the THIRDPARTY file.

Bug Reports

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/

The code for MariaDB, including all revision history, can be found at: https://github.com/MariaDB/server