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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Eugene Kosov a4b3970c6e MDEV-25951 MariaDB crash after ALTER TABLE convert to utf8mb4
Bug happens when partially indexed CHAR or VARCHAR field in converted from
utf8mb3 to utf8mb4.

Fixing by relaxing assertions. For some time dict_index_t and dict_table_t
are becoming not synchronized. Namely, dict_index_t has a new prefix_len which
is a multiple of a user-provided length and charset->mbmaxlen. But
the table still have and old mbmaxlen and assertion fails. This happens only
during utf8mb3 -> utf8mb4 conversions and the magic number 4 comes from
utf8mb_4_.

At the end of ALTER TABLE (innobase_rename_or_enlarge_columns_cache())
dict_index_t and dict_table_t became synchronized
again and will stay so at all times. For, example, they will be synchronized
on table load and newly added assertion proves that.
2021-09-08 16:08:32 +06:00
BUILD Merge 10.3 into 10.4 2021-08-31 09:22:21 +03:00
client Merge 10.3 into 10.4 2021-06-21 12:38:25 +03:00
cmake Merge 10.3 into 10.4 2021-08-25 07:30:47 +03:00
dbug Merge 10.2 into 10.3 2021-05-24 09:38:49 +03:00
debian Merge 10.3 into 10.4 2021-08-23 10:44:06 +03:00
Docs Merge branch '10.3' into 10.4 2019-06-14 22:10:50 +02:00
extra Merge 10.3 into 10.4 2021-08-31 09:22:21 +03:00
include Merge 10.3 into 10.4 2021-08-31 09:22:21 +03:00
libmariadb@42cb1e442c Update libmariadb 2021-08-30 11:10:43 +03:00
libmysqld Merge branch bb-10.3-release into bb-10.4-release 2021-05-05 23:03:01 +03:00
libservices Merge branch '10.3' into 10.4 2019-05-19 20:55:37 +02:00
man Merge 10.3 into 10.4 2021-04-21 07:58:42 +03:00
mysql-test MDEV-25951 MariaDB crash after ALTER TABLE convert to utf8mb4 2021-09-08 16:08:32 +06:00
mysys Merge 10.3 into 10.4 2021-08-31 09:22:21 +03:00
mysys_ssl Merge 10.3 into 10.4 2020-10-22 13:27:18 +03:00
pcre Merge branch '10.2' into 10.3 2021-07-29 13:51:02 +02:00
plugin MDEV-26487 cpack rpm failed to build packages with cmake < 3.7.0 2021-08-31 09:21:08 +02:00
randgen/conf
scripts Merge 10.3 into 10.4 2021-08-31 09:22:21 +03:00
sql MDEV-25718 Assertion `transaction.is_streaming()' failed 2021-09-06 08:16:06 +03:00
sql-bench Merge 10.2 into 10.3 2020-07-02 06:17:51 +03:00
sql-common Merge branch '10.3' into 10.4 2020-09-28 17:55:39 +05:30
storage MDEV-25951 MariaDB crash after ALTER TABLE convert to utf8mb4 2021-09-08 16:08:32 +06:00
strings Fix all warnings given by UBSAN 2021-04-20 12:30:09 +03:00
support-files Merge branch '10.3' into 10.4 2021-07-31 22:59:58 +02:00
tests Merge 10.3 into 10.4 2021-08-18 16:51:52 +03:00
unittest Merge branch 'bb-10.3-release' into bb-10.4-release 2021-02-12 17:44:22 +01:00
vio Merge 10.3 into 10.4 2021-03-27 17:12:28 +02:00
win Merge 10.3 into 10.4 2021-06-08 15:02:40 +03:00
wsrep-lib@4f1c201c9d Update wsrep-lib submodule 2021-09-06 08:33:18 +03:00
zlib Merge branch '10.3' into 10.4 2020-12-25 09:13:28 +01:00
.clang-format .clang-format - do not sort include files. 2019-12-03 22:22:23 +01:00
.gitattributes
.gitignore Merge 10.3 -> 10.4 2021-06-30 18:41:46 +03:00
.gitmodules Fix github urls of submodules 2019-07-02 17:25:36 +04:00
.travis.compiler.sh travis: use galera-4 in 10.4 branch (#1226) 2019-03-14 08:20:32 +02:00
.travis.yml Merge 10.3 into 10.4 2020-09-03 15:53:38 +03:00
appveyor.yml Appveyor configuration and addition of badge 2019-05-09 10:56:15 +02:00
BUILD-CMAKE
CMakeLists.txt Merge branch '10.3' into 10.4 2021-07-31 22:59:58 +02:00
config.h.cmake Merge 10.3 into 10.4 2021-03-27 17:12:28 +02:00
configure.cmake Merge branch '10.3' into 10.4 2021-07-31 22:59:58 +02:00
CONTRIBUTING.md
COPYING Update FSF Address 2019-05-11 21:29:06 +03:00
CREDITS Update sponsors 2021-03-12 07:02:29 +11:00
INSTALL-SOURCE
INSTALL-WIN-SOURCE
KNOWN_BUGS.txt Changed some MySQL names in messages to MariaDB 2018-12-09 20:49:05 +02:00
README.md Merge 10.3 into 10.4 2021-06-21 12:38:25 +03:00
THIRDPARTY Merge 10.1 into 10.2 2019-05-13 17:54:04 +03:00
VERSION bump the VERSION 2021-08-05 09:59:21 -04:00

Code status:

  • Appveyor CI status ci.appveyor.com

MariaDB: drop-in replacement for MySQL

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 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.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/library/new-and-old-releases/

https://mariadb.org/

As MariaDB is a full replacement of MySQL, the MySQL manual at http://dev.mysql.com/doc is generally applicable.

Help

More help is available from the Maria Discuss mailing list https://launchpad.net/~maria-discuss and the #maria IRC channel on Freenode.

Live QA for beginner contributors

MariaDB has a dedicated time each week when we answer new contributor questions live on Zulip and IRC. 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: https://mariadb.org/about/security-policy/

Bugs in the MySQL code can also be submitted at: https://bugs.mysql.com

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