de469a2f29
Similar to the tables SYS_FOREIGN and SYS_FOREIGN_COLS, the tables mysql.innodb_table_stats and mysql.innodb_index_stats are updated by the InnoDB internal SQL parser, which fails to enforce the size limits of the data. Due to this, it is possible for InnoDB to hang when there are persistent statistics defined on partitioned tables where the total length of table name, partition name and subpartition name exceeds the incorrectly defined limit VARCHAR(64). That column should have been defined as VARCHAR(199). btr_node_ptr_max_size(): Interpret the VARCHAR(64) as VARCHAR(199), to prevent a hang in the case that the upgrade script has not been run. dict_table_schema_check(): Ignore difference in the length of the table_name column. ha_innobase::max_supported_key_length(): For innodb_page_size=4k, return a larger value so that the table mysql.innodb_index_stats can be created. This could allow "impossible" tables to be created, such that it is not possible to insert anything into a secondary index when both the secondary key and the primary key are long, but this is the easiest and most consistent way. The Oracle fix would only ignore the maximum length violation for the two statistics tables. os_file_get_status_posix(), os_file_get_status_win32(): Handle ENAMETOOLONG as well. This patch is based on the following change in MySQL 5.7.23. Not all changes were applied, and our variant allows persistent statistics to work without hangs even if the table definitions were not upgraded. From fdbdce701ab8145ae234c9d401109dff4e4106cb Mon Sep 17 00:00:00 2001 From: Aditya A <aditya.a@oracle.com> Date: Thu, 17 May 2018 16:11:43 +0530 Subject: [PATCH] Bug #26390736 THE FIELD TABLE_NAME (VARCHAR(64)) FROM MYSQL.INNODB_TABLE_STATS CAN OVERFLOW. In mysql.innodb_index_stats and mysql.innodb_table_stats tables the table name column didn't take into consideration partition names which can be more than varchar(64). |
||
|---|---|---|
| BUILD | ||
| client | ||
| cmake | ||
| dbug | ||
| debian | ||
| Docs | ||
| extra | ||
| include | ||
| libmariadb@74fbbaefeb | ||
| libmysqld | ||
| libservices | ||
| man | ||
| mysql-test | ||
| mysys | ||
| mysys_ssl | ||
| pcre | ||
| plugin | ||
| randgen/conf | ||
| scripts | ||
| sql | ||
| sql-bench | ||
| sql-common | ||
| storage | ||
| strings | ||
| support-files | ||
| tests | ||
| unittest | ||
| vio | ||
| win | ||
| wsrep | ||
| zlib | ||
| .gitattributes | ||
| .gitignore | ||
| .gitmodules | ||
| .travis.compiler.sh | ||
| .travis.yml | ||
| appveyor.yml | ||
| BUILD-CMAKE | ||
| CMakeLists.txt | ||
| config.h.cmake | ||
| configure.cmake | ||
| 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.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:
travis-ci.org (10.2 branch)