# Percona Server for MySQL 5.7.41-44 (2023-03-02)

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| Release date | March 2, 2023 |
|---|---|
| Install instructions | [Install Percona Server for MySQL](https://www.percona.com/doc/percona-server/5.7/installation.html) |

[Percona Server for MySQL](https://www.percona.com/software/mysql-database/percona-server) 5.7.41-44
includes all the features and bug fixes available in [MySQL 5.7.41 Community Edition](https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-41.html) in addition to enterprise-grade features developed by Percona.

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.

## Release highlights

Percona has removed an Oracle patch for `mysqldump` that performed, at the beginning of the dump, a `FLUSH_TABLES_WITH_READ_LOCK` to get consistent `GTID_EXECUTED` because the patch required additional user privileges, even when the user does not use GTID-based replication. The following bugs based on this patch were submitted to Oracle:

* [MySQL 109701](https://bugs.mysql.com/bug.php?id=1097010)

* [MySQL 109685](https://bugs.mysql.com/bug.php?id=109685)
  
The Percona solution uses `START TRANSACTION WITH CONSISTENT SNAPSHOT`.

Improvements and bug fixes provided by Oracle for MySQL 5.7.41 and included in Percona Server for MySQL are the following:

* Updated the linked OpenSSL library for MySQL Server to 1.1.s
  
* Updated the bundled zlib library to zlib 1.2.13. This zlib library version is the minimum supported.

* While the SQL thread handled a transaction, issuing `STOP SLAVE_SQL_THREAD` caused replication to stop immediately instead of waiting for the event group to complete before the shutdown.
  
Find the full list of bug fixes and changes in the [MySQL 5.7.41 Release Notes](https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-41.html).

## Bug fixes

* [PS-7538](https://jira.percona.com/browse/PS-7538): With `innodb_optimize_fulltext_only` enabled, running `OPTIMIZE TABLE` on a table with an FTS index caused a server exit.

## Platform support

This release adds support for Ubuntu 22.04.

This release add support for Red Hat Enterprise Linux 9 and compatible derivatives.

## Useful links

The [Percona Server for MySQL GitHub location](https://github.com/percona/percona-server)

[Contribute to the documentation](https://github.com/percona/psmysql-docs/blob/8.0/contributing.md)

For [training](https://www.percona.com/training), contact [Percona Training - Start learning now](https://learn.percona.com/contact-me)