Percona Server for MySQL 8.0.28-19 (2022-05-12)¶
Percona Server for MySQL is a free, fully compatible, enhanced, and open source drop-in replacement for any MySQL database. It provides superior performance, scalability, and instrumentation.
Percona Server for MySQL is trusted by thousands of enterprises to provide better performance and concurrency for their most demanding workloads. It delivers more value to MySQL server users with optimized performance, greater performance scalability and availability, enhanced backups, and increased visibility. Commercial support contracts are available.
Improvements and bug fixes introduced by Oracle for MySQL 8.0.28 and included in Percona Server for MySQL are the following:
CHARACTER SET latin1and
CHARACTER SET ucs2are deprecated and raise a warning to use
CHARACTER SETinstead. The shortcuts will be removed in a future version.
A stored function and a loadable function with the same name can share the same namespace. Add the schema name when invoking a stored function in the shared namespace. The server generates a warning when function names collide.
ALTER TABLE ... RENAME COLUMNoperations when using
The limit for
innodb_open_filesnow includes temporary tablespace files. The temporary tablespace files were not counted in the
innodb_open_filesin previous versions.
Find the full list of bug fixes and changes in the MySQL 8.0.28 Release Notes.
Deprecation and removal¶
Starting with Percona Server for MySQL 8.0.28-19, the TokuDB storage engine is no longer supported. We have removed the storage engine from the installation packages and the storage engine is disabled in our binary builds.
PS-7871: Using the
SET_VARsyntax, MyRocks variables can be set dynamically.
PS-8064: The ability to change log file locations dynamically is restricted.
PS-7856: Fixed for a sever exit caused by an update query on a partition tables.
PS-8032: An Inplace index build with
lock=exclusivedid not generate an
PS-8050: An upgrade from Percona Server for MySQL 5.7 to MySQL 8.0.26, caused a server exit with an assertion failure.
To contribute to the documentation, review the Documentation Contribution Guide