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Kristian Nielsen 0888a93fb4 MDEV-35806: Error in read_log_event() corrupts relay log writer, crashes server
In Log_event::read_log_event(), don't use IO_CACHE::error of the relay log's
IO_CACHE to signal an error back to the caller. When reading the active
relay log, this flag is also being used by the IO thread, and setting it can
randomly cause the IO thread to wrongly detect IO error on writing and
permanently disable the relay log.

This was seen sporadically in test case rpl.rpl_from_mysql80. The read
error set by the SQL thread in the IO_CACHE would be interpreted as a
write error by the IO thread, which would cause it to throw a fatal
error and close the relay log. And this would later cause CHANGE
MASTER to try to purge a closed relay log, resulting in nullptr crash.

Also fix another sporadic failure in rpl.rpl_from_mysql80 where the outout
of MASTER_POS_WAIT() depended on timing of SQL and IO thread.

Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>
2025-01-10 14:47:16 +01:00
.github pr template: ask about release notes 2024-02-12 14:58:25 +00:00
BUILD Merge branch '10.6' into 10.11 2024-04-26 08:02:49 +02:00
client MDEV-35806: Error in read_log_event() corrupts relay log writer, crashes server 2025-01-10 14:47:16 +01:00
cmake CONC-743 Enable parsec by default 2024-12-10 11:33:25 +01:00
dbug
debian Revert "don't disable lto in DEB builds" 2024-10-29 16:42:52 +01:00
Docs
extra Merge 10.11 into 11.4 2025-01-09 07:58:08 +02:00
include Merge 10.11 into 11.4 2025-01-09 07:58:08 +02:00
libmariadb@52d0a38ed1 MDEV-20912 Add support for utf8mb4_0900_* collations in MariaDB Server 2024-12-28 10:23:49 +02:00
libmysqld MDEV-33091 pcre2 headers aren't found on Solaris 2024-09-05 12:14:06 +10:00
libservices
man MDEV-33556: Document mariadb-import --parallel option in man page 2024-10-15 13:04:39 +11:00
mysql-test MDEV-35806: Error in read_log_event() corrupts relay log writer, crashes server 2025-01-10 14:47:16 +01:00
mysys Merge 10.11 into 11.4 2025-01-09 07:58:08 +02:00
mysys_ssl OpenSSL - set all heap functions in CRYPTO_set_mem_functions. 2024-08-09 01:15:45 +02:00
plugin Merge 10.11 into 11.4 2025-01-09 07:58:08 +02:00
randgen/conf
scripts Merge 10.11 into 11.4 2025-01-09 07:58:08 +02:00
sql MDEV-35806: Error in read_log_event() corrupts relay log writer, crashes server 2025-01-10 14:47:16 +01:00
sql-bench
sql-common Merge 10.11 into 11.4 2024-12-02 11:35:34 +02:00
storage Merge 10.11 into 11.4 2025-01-09 07:58:08 +02:00
strings Merge 10.11 into 11.4 2025-01-09 07:58:08 +02:00
support-files Merge 10.11 into 11.4 2024-12-02 11:35:34 +02:00
tests Merge 10.11 into 11.4 2025-01-09 07:58:08 +02:00
tpool Merge 10.6 into 10.11 2025-01-08 12:51:26 +02:00
unittest Merge 10.11 into 11.4 2025-01-09 07:58:08 +02:00
vio Merge 11.2 into 11.4 2024-10-03 14:32:14 +03:00
win Merge 11.2 into 11.4 2024-10-03 14:32:14 +03:00
wsrep-lib@70cd967f5e galera: wsrep-lib submodule update 2024-12-17 09:53:19 +01:00
zlib Merge branch 'merge-zlib' (1.3.1) into 10.4 2024-04-26 13:50:03 +02:00
.clang-format Remove duplicate key "Language" from .clang-format 2024-04-17 16:52:37 +02:00
.gitattributes
.gitignore Merge 11.2 into 11.4 2024-10-03 14:32:14 +03:00
.gitlab-ci.yml Merge branch '11.1' into 11.2 2024-08-03 09:50:16 +02:00
.gitmodules
appveyor.yml Merge remote-tracking branch 'origin/11.2' into 11.4 2024-06-17 15:46:39 +04:00
BUILD-CMAKE
CMakeLists.txt Merge 10.11 into 11.4 2025-01-09 07:58:08 +02:00
CODING_STANDARDS.md
config.h.cmake Merge branch '11.2' into 11.4 2024-10-30 15:11:17 +01:00
configure.cmake Merge branch '11.2' into 11.4 2024-10-30 15:11:17 +01:00
CONTRIBUTING.md
COPYING
CREDITS Update sponsors 2024-08-12 09:32:30 +01:00
INSTALL-SOURCE
INSTALL-WIN-SOURCE
KNOWN_BUGS.txt
README.md Merge branch '10.11' into 11.1 2024-05-31 10:54:31 +10:00
SECURITY.md
THIRDPARTY
VERSION bump the VERSION 2024-11-01 11:39:00 -04:00

Code status:

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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 our security-policy.

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