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| 1 | +# Percona Distribution for MySQL 8.0.28 using Percona XtraDB Cluster (2022-07-19) |
| 2 | + |
| 3 | +| Release date | July 19, 2022 | |
| 4 | +| :-------------- | :--------------- | |
| 5 | +|**Installation** | [Installing Percona Distribution for MySQL](installing.md)| |
| 6 | + |
| 7 | +Percona Distribution for MySQL is a single solution with the most critical enterprise components from the MySQL open source community, designed and tested to work together. |
| 8 | + |
| 9 | +Percona Distribution for MySQL provides two deployment variants: one is based on *Percona Server for MySQL* and another one is based on *Percona XtraDB Cluster*. |
| 10 | + |
| 11 | +This release of Percona Distribution for MySQL is focused on the *Percona XtraDB Cluster*-based deployment variant. It is based on [Percona XtraDB Cluster 8.0.28-19.1](https://www.percona.com/doc/percona-xtradb-cluster/8.0/release-notes/Percona-XtraDB-Cluster-8.0.28-19.1.html) |
| 12 | + |
| 13 | +## Release Highlights |
| 14 | + |
| 15 | +The following lists a number of the bug fixes for *MySQL* 8.0.28, provided by Oracle, and included in Percona XtraDB Cluster and Percona Distribution for MySQL: |
| 16 | + |
| 17 | + |
| 18 | +* The ``ASCII`` shortcut for ``CHARACTER SET latin1`` and ``UNICODE`` shortcut for ``CHARACTER SET ucs2`` are deprecated and raise a warning to use ``CHARACTER SET`` instead. The shortcuts will be removed in a future version. |
| 19 | +* 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. |
| 20 | +* InnoDB supports ``ALTER TABLE ... RENAME COLUMN`` operations when using ``ALGORITHM=INSTANT``. |
| 21 | +* The limit for ``innodb_open_files`` now includes temporary tablespace files. The temporary tablespace files were not counted in the ``innodb_open_files`` in previous versions. |
| 22 | + |
| 23 | +Find the full list of bug fixes and changes in the [MySQL 8.0.28 Release Notes](https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-28.html). |
| 24 | + |
| 25 | +The following is the list of components supplied with the *Percona XtraDB Cluster*-based deployment variant of Percona Distribution for MySQL: |
| 26 | + |
| 27 | +| Component | Version | Description | |
| 28 | +| ------------------- | --------- | -------------------------------------------| |
| 29 | +| Percona XtraBackup | [8.0.28](https://docs.percona.com/percona-xtrabackup/8.0/release-notes/8.0/8.0.28-21.0.html) | An open-source hot backup utility for MySQL-based servers that doesn’t lock your database during the backup.| |
| 30 | +| HAProxy | [2.5.6](http://git.haproxy.org/?p=haproxy-2.5.git;a=commit;h=ba44b431294b6ddb65d5841632789dabf253439d) | A high-availability and load-balancing solution for Percona XtraDB Cluster. This is a default proxy.| |
| 31 | +| ProxySQL | [2.3.2](https://docs.percona.com/proxysql/release-notes-2.3.2-1.html) | A high performance, high-availability, protocol-aware proxy for MySQL. | |
| 32 | +| Percona Toolkit | [3.4.0](https://www.percona.com/doc/percona-toolkit/LATEST/release_notes.html#v3-4-0-released-) | The set of scripts to simplify and optimize database operation. | |
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