Galera 26.4.5 Release Notes
Codership is pleased to announce a new release of Galera Cluster for MySQL consisting of MySQL-wsrep 8.0.19 and Galera 4.5, wsrep API version 26.
This is the first generally availabe binary release of Galera 4 series by Codership.
Notable new features in Galera 4 series are:
Streaming replication will improve execution of large transactions by splitting transaction replication and applying into small fragments.
Optimized write set certification rules will improve foreign key support by reducing the number of foreign key related false conflicts in certification.
Support for group commit.
Notable fixes in Galera replication since last source release (4.4):
Buffer overflow with auto-evict has been fixed.
All GCache ring buffer capacity was not always restored in GCache recovery. This has been now fixed.
Error handling during bad network conditions has been improved to make node to attempt to leave cluster gracefully if there is a possibility for data inconsistency.
Notable fixes in Galera replication since latest release candidate (4.5-rc):
Error handling during frequent cluster configuration changes was improved.
A segmentation fault with multicast was fixed.
The packages are available from https://releases.galeracluster.com/ for the following operating systems:
CentOS 7 and 8
Debian 10
OpenSUSE 15
SLES 15 SP 1
Ubuntu 18.04 and 20.04
Known issues with this release:
When installing software on CentOS 8, dnf modules mysql and mariadb must be disabled before installing Galera Cluster software. This can be done by running
dnf module disable mysql mariadb.
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