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.
Find a file
Marko Mäkelä 10590dd39c MDEV-15199 Referential integrity broken in ON DELETE CASCADE
MDEV-14222 Unnecessary 'cascade' memory allocation for every updated row
when there is no FOREIGN KEY

This reverts the MySQL 5.7.2 change
377774689b
which introduced these problems. MariaDB 10.2.2 inherited these problems
in commit 2e814d4702.

The FOREIGN KEY CASCADE and SET NULL operations implemented as
procedural recursion are consuming more than 8 kilobytes of stack
(9 stack frames) per iteration in a non-debug GNU/Linux AMD64 build.
This is why we need to limit the maximum recursion depth to 15 steps
instead of the 255 that it used to be in MySQL 5.7 and MariaDB 10.2.

A corresponding change was made in MySQL 5.7.21 in
7b26dc98a6
2018-02-07 10:39:12 +02:00
BUILD
client Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
cmake Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
dbug
debian Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
Docs
extra Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
include compilation error on windows 2018-02-06 14:51:44 +01:00
libmariadb@cfafbb6bab
libmysqld
libservices
man
mysql-test MDEV-15199 Referential integrity broken in ON DELETE CASCADE 2018-02-07 10:39:12 +02:00
mysys Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
mysys_ssl Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
pcre
plugin Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
randgen/conf
scripts remove bash-ish from SST scripts 2018-02-06 14:52:01 +01:00
sql Fixed mdev-15162 Query with CTE hangs if assignment operator (:=) is used 2018-02-06 12:12:19 -08:00
sql-bench
sql-common
storage MDEV-15199 Referential integrity broken in ON DELETE CASCADE 2018-02-07 10:39:12 +02:00
strings
support-files Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
tests
unittest Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
vio
win Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
wsrep
zlib
.gitattributes
.gitignore
.gitmodules
.travis.compiler.sh
.travis.yml
appveyor.yml
BUILD-CMAKE
CMakeLists.txt Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
config.h.cmake Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
configure.cmake Merge branch 'github/10.1' into 10.2 2018-02-06 14:50:50 +01:00
COPYING
COPYING.thirdparty
CREDITS
EXCEPTIONS-CLIENT
INSTALL-SOURCE
INSTALL-WIN-SOURCE
KNOWN_BUGS.txt
README.md
VERSION

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. 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: 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-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.

Help:

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

License:


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.


Bug Reports:

Bug and/or error reports regarding MariaDB should be submitted at https://mariadb.org/jira

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


Code status:

  • tests status travis-ci.org (10.2 branch)