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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Nikita Malyavin 46ee272a10 MDEV-32100 Online ALTER TABLE ends with 1032 under some isolation levels
1032 (Can't find record) could be emitted when ALTER TABLE is execued vs
concurrent DELETE/UPDATE/other DML that would require search on the online
ALTER's side.

Innodb's INPLACE, in comparison, creates a new trx_t and uses it in scope
of the alter table context.

ALTER TABLE class of statements (i.g. CREATE INDEX, OPTIMIZE, etc.) is
expected to be unaffected by the value of current session's transaction
isolation.

This patch save-and-restores thd->tx_isolation and sets in to
ISO_REPEATABLE_READ for almost a whole mysql_alter_table duration, to avoid
any possible side-effect of it. This should be primarily done before the
lock_tables call, to initialize the storage engine's local value correctly
during the store_lock() call.

sql_table.cc: set thd->tx_isolation to ISO_REPEATABLE_READ in
mysql_alter_table and then restore it to the original value in the end of
the call.
2023-11-02 22:58:02 +04:00
.github Merge 10.11 into 11.0 2023-06-08 13:49:48 +03:00
BUILD Merge 10.10 into 10.11 2023-10-17 16:04:21 +03:00
client Merge branch '11.1' into 11.2 2023-10-27 18:11:56 +11:00
cmake Merge branch '11.1' into 11.2 2023-10-27 18:11:56 +11:00
dbug Merge 10.6 into 10.8 2023-02-10 13:43:53 +02:00
debian Merge branch '11.1' into 11.2 2023-10-27 18:11:56 +11:00
Docs Fixed some typos in optimizer_costs.txt 2023-03-28 18:41:09 +11:00
extra Merge 11.0 into 11.1 2023-10-19 08:26:16 +03:00
include Merge branch '11.1' into 11.2 2023-10-27 18:11:56 +11:00
libmariadb@c0ddc2c8cf New CC 3.3 2023-08-01 16:40:10 +02:00
libmysqld Merge branch '11.1' into 11.2 2023-10-27 18:11:56 +11:00
libservices MDEV-12933 sort out the compression library chaos 2021-10-27 15:55:14 +02:00
man Merge 11.0 into 11.1 2023-07-26 15:13:43 +03:00
mysql-test MDEV-32100 Online ALTER TABLE ends with 1032 under some isolation levels 2023-11-02 22:58:02 +04:00
mysys Merge branch '11.1' into 11.2 2023-10-27 18:11:56 +11:00
mysys_ssl Merge branch '10.4' into 10.5 2023-08-01 11:52:13 +02:00
plugin Merge 10.11 into 11.0 2023-10-19 08:12:16 +03:00
randgen/conf Group commit for maria engine. 2010-02-12 15:12:28 +02:00
scripts Merge branch '11.1' into 11.2 2023-10-27 18:11:56 +11:00
sql MDEV-32100 Online ALTER TABLE ends with 1032 under some isolation levels 2023-11-02 22:58:02 +04:00
sql-bench Updated sql-bench to run with PostgreSQL 14.9 2023-09-09 15:14:45 +03:00
sql-common Merge branch '11.0' into 11.1 2023-08-09 08:25:14 +02:00
storage Merge branch '11.1' into 11.2 2023-10-27 18:11:56 +11:00
strings Merge branch '10.10' into 10.11 2023-08-08 14:57:31 +02:00
support-files Merge 11.0 into 11.1 2023-10-19 08:26:16 +03:00
tests Merge branch '11.1' into 11.2 2023-10-27 18:11:56 +11:00
tpool Merge 10.10 into 10.11 2023-10-17 16:04:21 +03:00
unittest Merge 10.9 into 10.10 2023-04-14 12:24:14 +03:00
vio Fix trivial spelling errors 2023-03-24 12:54:05 +11:00
win Merge 10.11 into 11.0 2023-10-19 08:12:16 +03:00
wsrep-lib@151d4f8591 galera: wsrep-lib sumbodule update 2023-09-12 00:38:48 +02:00
zlib Merge branch 'merge-zlib' into 10.3 2023-04-20 17:06:19 +02:00
.clang-format Merge 10.4 into 10.5 2019-12-27 21:17:16 +02:00
.gitattributes Merge branch '10.5' into 10.6 2022-02-03 17:01:31 +01:00
.gitignore Merge branch '11.0' into 11.1 2023-09-29 13:58:47 +02:00
.gitlab-ci.yml Merge branch '11.1' into 11.2 2023-08-18 00:59:16 +02:00
.gitmodules Merge remote-tracking branch '10.4' into 10.5 2023-03-31 21:32:41 +02:00
appveyor.yml Merge 10.5 into 10.6 2022-07-27 17:52:37 +03:00
BUILD-CMAKE Minor spelling fixes in code comments, docs and output 2018-01-12 16:49:02 +02:00
CMakeLists.txt Merge 10.11 into 11.0 2023-10-19 08:12:16 +03:00
CODING_STANDARDS.md Add preprocessor whitespace to CODING_STANDARDS.md 2023-07-12 09:33:50 +10:00
config.h.cmake Merge 10.6 into 10.7 2022-10-13 10:05:29 +03:00
configure.cmake Merge 10.6 into 10.10 2023-10-14 13:36:11 +03:00
CONTRIBUTING.md Add CODING_STANDARDS.md file 2023-02-03 15:47:17 +11:00
COPYING Update FSF Address 2019-05-11 21:29:06 +03:00
CREDITS CREDITS: re-instate Tencent Cloud 2023-01-25 16:44:26 +11:00
INSTALL-SOURCE Update AskMonty and Atlassian references to MariaDB 2016-03-08 15:24:01 +02:00
INSTALL-WIN-SOURCE Update AskMonty and Atlassian references to MariaDB 2016-03-08 15:24:01 +02:00
KNOWN_BUGS.txt Changed some MySQL names in messages to MariaDB 2018-12-09 20:49:05 +02:00
README.md Update README.md 2023-06-05 08:28:06 +10:00
SECURITY.md Create SECURITY.md 2023-06-05 08:28:06 +10:00
THIRDPARTY MDEV-27009: Add UCA-14.0.0 collations - License 2023-04-17 17:06:18 +10:00
VERSION Merge branch '11.1' into mariadb-11.1.2 2023-08-24 08:44:32 +02:00

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 theyd 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 our security-policy.

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