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Percona XtraDB Cluster 8.0.21-12.1

Percona XtraDB Cluster 8.0.21-12.1 includes all of the features and bug fixes available in Percona Server for MySQL. See the corresponding release notes for Percona Server for MySQL 8.0.21-12 for more details on these changes.

Implement an inconsistency voting policy. In the best case scenario, the node with the inconsistent data is aborted and the cluster continues to operate.


  • PXC-2574: Improve messaging for “BF lock wait long” timeout

Bugs Fixed

  • PXC-3353: Modify error handling in Garbd when donor crashes during SST or when an invalid donor name is passed to it

  • PXC-3468: Resolve package conflict when installing PXC 5.7 on RHEL/CentOS8

  • PXC-3418: Prevent DDL-DML deadlock by making in-place ALTER take shared MDL for the whole duration.

  • PXC-3416: Fix memory leaks in garbd when started with invalid group name

  • PXC-3445: Correct MTR test failures

  • PXC-3442: Fix crash when log_slave_updates=ON and consistency check statement is executed

  • PXC-3424: Fix error handling when the donor is not able to serve SST

  • PXC-3404: Fix memory leak in garbd while processing CC actions

  • PXC-3191: Modify Read-Only checks on wsrep_* tables when in super_read_only

Known Issues (unfixed problems that you should be aware of)

  • PXC-3039: No useful error messages if an SSL-disabled node tries to join an SSL-enabled cluster

  • PXC-3092: Log a warning at startup if a keyring is specified but cluster traffic encryption is turned off

  • PXC-3093: Completed SST Transfer incorrectly logged by garbd (Timing is not correct)

  • PXC-3159: Modify the error handling to close the communication channels and abort the joiner node when the donor crashes

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Last update: 2024-04-09