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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Marko Mäkelä decdd4bf49 MDEV-29015/MDEV-29260/MDEV-34938: os_file_get_size() WSL work-around
When MariaDB Server is run in a container under
Windows Subsystem for Linux, the fstat(2) system calls that InnoDB
invokes in os_file_set_size() or os_file_get_size() are causing a
failure in case the file had been renamed in the past while the file
handle was open. This affects at least ALTER TABLE and OPTIMIZE TABLE.

os_file_get_size(): Invoke lseek(2) instead of fstat(2). We do not mind
if the file pointer is moving to the end of the file, because InnoDB
exclusively invokes positioned reads and writes, or in some rare cases,
appends to an existing file.

os_file_set_size(): Invoke os_file_get_size() instead of fstat(2).
Define the POSIX and Windows versions separately. Formerly, the
Windows version was called os_file_change_size_win32().

fil_node_t::read_page0(): Use os_file_get_size() to determine the
size, and do not crash on error.

fil_node_t::read_metadata(): Remove the non-Windows stat* parameter
and always invoke fstat(2) outside Windows, but do tolerate errors.
Because fstat(2) is more likely to fail than lseek(2), and this is
not time critical code, we can afford the extra lseek(2) system call.

Reviewed by: Vladislav Vaintroub
2024-10-24 16:08:56 +03:00
BUILD
client
cmake
dbug
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Docs
extra
include
libmariadb@9a40079349 new CC 3.1 2024-10-23 08:40:22 +02:00
libmysqld
libservices
man
mysql-test MDEV-35236 Assertion `(mem_root->flags & 4) == 0' failed in safe_lexcstrdup_root 2024-10-23 14:58:57 +02:00
mysys
mysys_ssl
plugin
randgen/conf
scripts
sql MDEV-35236 Assertion `(mem_root->flags & 4) == 0' failed in safe_lexcstrdup_root 2024-10-23 14:58:57 +02:00
sql-bench
sql-common
storage MDEV-29015/MDEV-29260/MDEV-34938: os_file_get_size() WSL work-around 2024-10-24 16:08:56 +03:00
strings
support-files
tests
tpool
unittest
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win
wsrep-lib@1c61b809d1 galera: wsrep-lib submodule update 2024-10-23 03:47:52 +02:00
zlib
.clang-format
.gitattributes
.gitignore
.gitlab-ci.yml
.gitmodules
appveyor.yml
BUILD-CMAKE
CMakeLists.txt
config.h.cmake
configure.cmake
CONTRIBUTING.md
COPYING
CREDITS
INSTALL-SOURCE
INSTALL-WIN-SOURCE
KNOWN_BUGS.txt
README.md
THIRDPARTY
VERSION

Code status:

  • Appveyor CI status ci.appveyor.com

MariaDB: The innovative open source 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/

Getting the code, building it and testing it

Refer to the following guide: https://mariadb.org/get-involved/getting-started-for-developers/get-code-build-test/ which outlines how to build the source code correctly and run the MariaDB testing framework, as well as which branch to target for your contributions.

Help

More help is available from the Maria Discuss mailing list https://lists.mariadb.org/postorius/lists/discuss.lists.mariadb.org/ and MariaDB's Zulip instance, https://mariadb.zulipchat.com/

Licensing


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