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Percona Software for MySQL Documentation

Percona XtraDB Cluster 8.0.34-26 (2023-11-01)

Percona XtraDB Cluster (PXC) supports critical business applications in your public, private, or hybrid cloud environment. Our free, open source, enterprise-grade solution includes the high availability and security features your business requires to meet your customer expectations and business goals.

Release highlights

Percona XtraDB Cluster is based on Percona Server for MySQL. Find a complete list of improvements and bug fixes in the Percona Server for MySQL 8.0.34-26 (2023-09-26) release notes.

Percona XtraDB Cluster implements telemetry that fills in the gaps in our understanding of how you use Percona XtraDB Cluster to improve our products. Participation in the anonymous program is optional. You can opt-out if you prefer not to share this information. Find more information in the Telemetry on Percona XtraDB Cluster document.

Improvements and bug fixes introduced by Oracle for MySQL 8.0.34 and included in Percona XtraDB Cluster are the following:

  • Adds mysql_binlog_open(), mysql_binlog_fetch(), and mysql_binlog_close() functions to the libmysqlclient.so shared library. These functions enable developers to access a MySQL server binary log.

  • For platforms on which OpenSSL libraries are bundled, the linked OpenSSL library for MySQL Server is updated from OpenSSL 1.1.1 to OpenSSL 3.0.9.

Deprecations and removals

  • The mysqlpump client utility program is deprecated. The use of this program causes a warning. The mysqlpump client may be removed in future releases. The applications that depend on mysqlpump will use mysqldump or MySQL Shell Utilities.

  • The sync_relay_log_info server system variable is deprecated. Using this variable or its equivalent startup --sync-relay-log-info option causes a warning. This variable may be removed in future releases. The applications that use this variable should be rewritten not to depend on it before the variable is removed.

  • The binlog_format server system variable is deprecated and may be removed in future releases. The functionality associated with this variable, which changes the binary logging format, is also deprecated.

    When binlog_format is removed, MySQL server supports only row-based binary logging. Thus, new installations should use only row-based binary logging. Migrate the existing installations that use the statement-based or mixed logging format to the row-based format.

    The system variables log_bin_trust_function_creators and log_statements_unsafe_for_binlog used in the context of statement-based logging are also deprecated and may be removed in future releases.

    Setting or selecting the values of deprecated variables causes a warning.

  • The mysql_native_password authentication plugin is deprecated and may be removed in future releases. Using CREATE USER, ALTER USER, and SET PASSWORD operations, insert a deprecation warning into the server error log if an account attempts to authenticate using mysql_native_password as an authentication method.

  • The keyring_file and keyring_encrypted_file plugins are deprecated. These keyring plugins are replaced with the component_keyring_file and component_keyring_encrypted_file components.

Find the full list of bug fixes and changes in the MySQL 8.0.34 Release Notes.

Bug fixes

  • PXC-4219: Starting a Percona XtraBackup process and issuing a START REPLICA command simultaneously could deadlock the server.

  • PXC-4238: Running either the asynchronous_connection_failover_add_source user defined function or the asynchronous_connection_failover_delete_source user defined function generated an errant transaction, which could prevent a failover in the future.

  • PXC-4255: Running ALTER USER/SET PASSWORD and FLUSH PRIVILEGES simultaneously on different Percona XtraDB Cluster nodes stalled the cluster.

  • PXC-4284: If a MySQL user was not created before the GRANT option, the Percona XtraDB Cluster node was disconnected and needed a complete state transfer (SST).

  • PXC-4288: Galera Arbitrator (garbd) used 100% CPU.

  • PXC-4302: The GRANT statement could be replicated in a wrong way if partial_revokes=1 was enabled.

  • PXC-4310: A warning message had an incorrect link.

  • PXC-4296: The garbd 8.0.33 reported a wrong version.

Install Percona XtraDB Cluster

The Percona XtraDB Cluster GitHub location

Download product binaries, packages, and tarballs at Percona Product Downloads

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Last update: 2023-11-01