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Percona XtraDB Cluster 8.0.21-12.1
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      • About Percona XtraDB Cluster
      • Percona XtraDB Cluster limitations
      • Understand version numbers
      • Quick start guide for Percona XtraDB Cluster
      • Install Percona XtraDB Cluster
      • Configure nodes for write-set replication
      • Bootstrap the first node
      • Add nodes to cluster
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      • Enable AppArmor
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      • Understand GCache and Record-Set cache
      • GCache encryption and Write-Set cache encryption
      • Perfomance Schema instrumentation
      • Data at Rest Encryption
      • Upgrade Percona XtraDB Cluster
      • Crash recovery
      • Configure Percona XtraDB Cluster on CentOS
      • Configure Percona XtraDB Cluster on Ubuntu
      • Set up Galera arbitrator
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      • Load balancing with HAProxy
      • Load balancing with ProxySQL
      • ProxySQL admin utilities
      • Setting up a testing environment with ProxySQL
      • Release notes index
      • Percona XtraDB Cluster 8.0.31-23 (2023-03-14)
      • Percona XtraDB Cluster 8.0.30-22.md (2022-12-28)
      • Percona XtraDB Cluster 8.0.29-21 (2022-09-12)
      • Percona XtraDB Cluster 8.0.28-19.1 (2022-07-19)
      • Percona XtraDB Cluster 8.0.27-18.1
      • Percona XtraDB Cluster 8.0.26-16.1
      • Percona XtraDB Cluster 8.0.25-15.1
      • Percona XtraDB Cluster 8.0.23-14.1
      • Percona XtraDB Cluster 8.0.22-13.1
      • Percona XtraDB Cluster 8.0.21-12.1
        • Improvements
        • Bugs Fixed
        • Known Issues (unfixed problems that you should be aware of)
      • Percona XtraDB Cluster 8.0.20-11
      • Percona XtraDB Cluster 8.0.20-11.3
      • Percona XtraDB Cluster 8.0.20-11.2
      • Percona XtraDB Cluster 8.0.19-10
      • Percona XtraDB Cluster 8.0.18-9.3
      • Index of wsrep status variables
      • Index of wsrep system variables
      • Index of wsrep_provider options
      • Index of files created by PXC
      • Frequently asked questions
      • Glossary
      • Copyright and licensing information
      • Trademark policy

    • Improvements
    • Bugs Fixed
    • Known Issues (unfixed problems that you should be aware of)

    Percona XtraDB Cluster 8.0.21-12.1¶

    • Date

      December 28, 2020

    • Installation

      Installing Percona XtraDB Cluster

    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.

    Improvements¶

    • 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

    Contact us

    For free technical help, visit the Percona Community Forum.

    To report bugs or submit feature requests, open a JIRA ticket.

    For paid support and managed or consulting services , contact Percona Sales.


    Last update: 2022-08-24
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