Percona Server for MySQL 8.4.3-3 (2024-12-18)¶
Get started with Quickstart Guide for Percona Server for MySQL.
Percona Server for MySQL 8.4.3-3 includes all the features and bug fixes available in the MySQL 8.4.3 Community Edition in addition to enterprise-grade features developed by Percona.
Release highlights¶
Improvements and bug fixes introduced by Oracle for MySQL 8.4.3 and included in Percona Server for MySQL are the following:
-
The query
SELECT * FROM sys.innodb_lock_waits;
now fetches only two locks per wait, instead of scanning all locks twice, improving performance under heavy load. Additionally, primary keys have been added toDATA_LOCKS
andDATA_LOCK_WAITS
. (Bug #100537, Bug #31763497) -
Changes in MySQL 8.0.33 caused performance degradation for queries using joins on
InnoDB
tables due to refactoring of functions that were previously inline. -
The server crashed when it tried to update columns altered with
NULL
as the default value using theINSTANT
algorithm. -
The server could crash during
DELETE
orUPDATE
operations if a column was dropped using theINSTANT
algorithm. -
Importing a table created under a different
sql_mode
sometimes led to schema mismatches, risking data corruption in secondary indexes. The fix now includes integrity checks on the imported tablespace. -
Rebuilding tables with secondary indexes required more file
I/O
operations compared to MySQL 8.0.26, which slowed down query performance.
Find the complete list of bug fixes and changes in the MySQL 8.4.3 release notes.
Bug fixes¶
-
PS-9382: After an upgrade, the telemetry daemon ran continuously. The telemetry daemon was manually stopped and the service was disabled. Adding
percona_telemetry_disable=1
to the configuration file and restarting MySQL led to the server becoming unresponsive and required a forced termination. -
PS-9453: The
percona_telemetry
tool caused a long wait onCOND_thd_list
if the root user is absent.
Additional resources¶
-
Install Percona Server for MySQL 8.4
-
Download product binaries, packages, and tarballs at Percona Software Downloads
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For training, contact Percona Training - Start learning now
Get expert help¶
If you need assistance, visit the community forum for comprehensive and free database knowledge, or contact our Percona Database Experts for professional support and services.