Skip to content
logo
Percona Server for MySQL
Percona Server for MySQL 8.0.26-17 (2022-01-26)
Initializing search
    percona/psmysql-docs
    percona/psmysql-docs
    • Home
      • Release notes index
      • Percona Server for MySQL 8.0.34-26 (2023-09-26)
      • Percona Server for MySQL 8.0.33-25 Update (2023-08-02)
      • Percona Server for MySQL 8.0.33-25 (2023-06-15)
      • Percona Server for MySQL 8.0.32-24 (2023-03-20)
      • Percona Server for MySQL 8.0.31-23 (2023-02-09)
        • Percona Server for MySQL 8.0.30-22 Update (2022-11-21)
        • Percona Server for MySQL 8.0.30-22 (2022-11-21)
        • Percona Server for MySQL 8.0.29-21 (2022-08-08)
        • Percona Server for MySQL 8.0.28-20 (2022-06-20)
        • Percona Server for MySQL 8.0.28-19 (2022-05-12)
        • Percona Server for MySQL 8.0.27-18 (2022-03-02)
        • Percona Server for MySQL 8.0.26-17 (2022-01-26)
          • Release Highlights
          • Deprecated Features
          • Bugs Fixed
        • Percona Server for MySQL 8.0.26-16 (2021-10-20)
        • Percona Server for MySQL 8.0.25-15 (2021-07-13)
        • Percona Server for MySQL 8.0.23-14 (2021-05-12)
        • Percona Server for MySQL 8.0.22-13 (2020-12-14)
        • Percona Server for MySQL 8.0.21-12 (2020-10-13)
        • Percona Server for MySQL 8.0.20-11 (2020-07-21)
        • Percona Server for MySQL 8.0.19-10 (2020-03-23)
        • Percona Server for MySQL 8.0.18-9
        • Percona Server for MySQL 8.0.17-8
        • Percona Server for MySQL 8.0.16-7
        • Percona Server for MySQL 8.0.15-6
        • Percona Server for MySQL 8.0.15-5
        • Percona Server for MySQL 8.0.14
        • Percona Server for MySQL 8.0.13-4
        • Percona Server for MySQL 8.0.13-3
        • Percona Server for MySQL 8.0.12-2rc1
      • Adaptive network buffers
        • Audit Log Filter overview
        • Install the Audit Log Filter
          • Overview
          • XML (New style)
          • XML (Old style)
          • JSON
        • Audit Log Filter security
        • Audit Log Filter compression and encryption
        • Reading Audit Log Filter files
        • Filter the Audit Log Filter logs
        • Audit Log Filter restrictions
        • Audit Log Filter file naming conventions
        • Disable Audit Log Filter logging
        • Audit log filter functions, options and variables
        • Uninstall Audit Log Filter
      • Limiting the disk space used by binary log files
      • Extended mysqlbinlog
      • Extended SELECT INTO OUTFILE/DUMPFILE
      • Expanded fast index creation
      • Kill idle transactions
      • The ProcFS plugin
      • Support for PROXY protocol
      • SEQUENCE_TABLE(n) function
      • Slow query log rotation and expiration
      • Thread pool
      • Trigger updates
      • Percona Toolkit UDFs
      • Utility user
      • Quickstart guide for Percona Server for MySQL
      • Install Percona Server for MySQL from repositories
        • Use APT repositories
        • Files in DEB package
        • Build APT packages
        • Downloaded DEB packages
        • Apt pinning
        • Run Percona Server for MySQL
        • Uninstall
        • Use RPM repositories
        • Files in RPM package
        • Downloaded RPM packages
        • Run Percona Server for MySQL
        • Uninstall
        • Install with binary tarballs
        • Binary tarballs available
        • Install Percona Server for MySQL from a source tarball
        • Compile Percona Server for MySQL 8.0 from source
        • Install using Docker
        • Docker environment variables
      • Upgrade guide
      • Upgrade using the Percona repositories
      • Upgrade from systems that use the MyRocks or TokuDB storage engine and partitioned tables
      • Upgrade using Standalone Packages
      • Downgrade
      • Working with AppArmor
      • Binary logs and replication improvements
      • Post-installation
      • Working with SELinux
      • Extended SHOW GRANTS
      • UNINSTALL COMPONENT
      • Backup and restore overview
      • Backup locks
      • Extended mysqldump
      • Start transaction with consistent snapshot
        • Using LDAP authentication plugins
        • LDAP authentication plugin system variables
        • Data masking overview
        • Compare the data masking component to the data masking plugin
          • Install the data masking component
          • Data masking component functions
          • Uninstall the component
          • Install and remove the data masking plugin
          • Data masking plugin functions
      • FIDO authentication plugin
      • Encryption functions
      • PAM authentication plugin
      • SSL improvements
      • Server variables
        • Data at Rest Encryption
        • Use the keyring component or keyring plugin
          • Using the Key Management Interoperability Protocol (KMIP)
          • Use the Amazon Key Management Service (AWS KMS)
          • Encrypt File-Per-Table Tablespace
          • Encrypt schema or general tablespace
          • Encrypt system tablespace
          • Encrypt temporary files
          • Encrypt Binary Log Files and Relay Log Files
          • Encrypting the Redo Log data
          • Encrypt the undo tablespace
          • Rotate the master key
          • Advanced encryption key rotation
          • Encrypt doublewrite buffers
          • Verify the encryption for tables, tablespaces, and schemas
      • Manage group replication flow control
      • Group replication system variables
      • Audit log plugin
      • Jemalloc memory allocation profiling
      • Misc. INFORMATION_SCHEMA tables
      • Process list
      • Slow query log
      • User statistics
      • Use Percona Monitoring and Management (PMM) Advisors
      • Handle corrupted tables
      • Libcoredumper
      • Too many connections warning
      • Stacktrace
      • Thread based profiling
        • Multiple page asynchronous I/O requests
        • XtraDB changed page tracking
        • Compressed columns with dictionaries
        • Enforcing storage engine
        • Improved MEMORY storage engine
        • InnoDB page fragmentation counters
        • InnoDB full-text search improvements
        • Improved InnoDB I/O scalability
        • Extended show engine InnoDB status
        • The Percona XtraDB storage engine
        • Prefix index queries optimization
        • Limit the estimation of records in a Query
        • Show storage engines
        • XtraDB performance improvements for I/O-bound highly-concurrent workloads
        • Percona MyRocks introduction
        • Percona MyRocks installation guide
        • Updated supported features
        • MyRocks limitations
        • Differences between Percona MyRocks and Facebook MyRocks
        • MyRocks Information Schema tables
        • MyRocks server variables
        • MyRocks status variables
        • Gap locks detection
        • Data loading
        • Installing and configuring Percona Server for MySQL with ZenFS support
        • TokuDB introduction
        • TokuDB installation
        • Use TokuDB
        • Fast updates with TokuDB
        • TokuDB files and file types
        • TokuDB file management
        • TokuDB background ANALYZE TABLE
        • TokuDB variables
        • TokuDB status variables
        • TokuDB fractal tree indexing
        • TokuDB troubleshooting
        • TokuDB Performance Schema integration
        • Frequently asked questions
        • Migrate and removing the TokuDB storage engine
        • Percona TokuBackup
      • List of variables introduced in Percona Server for MySQL 8.0
      • List of features available in Percona Server for MySQL releases
      • Percona Server for MySQL feature comparison
      • Understand version numbers
      • Development of Percona Server for MySQL
      • Trademark policy
      • Index of INFORMATION_SCHEMA tables
      • Frequently asked questions
      • Copyright and licensing information
      • Glossary

    • Release Highlights
    • Deprecated Features
    • Bugs Fixed

    Percona Server for MySQL 8.0.26-17 (2022-01-26)¶

    • Installation Installing Percona Server for MySQL

    Percona Server for MySQL 8.0.26-17 includes all the features and bug fixes available in the MySQL 8.0.26 Community Edition. in addition to enterprise-grade features developed by Percona.

    Percona Server for MySQL 8.0.26-17 is now the current GA release in the 8.0 series.

    Percona Server for MySQL® is a free, fully-compatible, enhanced, and open source drop-in replacement for any MySQL database. It provides superior performance, scalability, and instrumentation.

    Percona Server for MySQL is trusted by thousands of enterprises to provide better performance and concurrency for their most demanding workloads. It delivers a greater value to MySQL server users with optimized performance, greater performance scalability, and availability, enhanced backups and increased visibility. Commercial support contracts are available.

    Release Highlights¶

    Percona integrates a ZenFS RocksDB plugin to Percona Server for MySQL. This plugin places files on a raw zoned block device (ZBD) using the MyRocks File System interface. Percona provides a binary release for Debian 11.1. Other Linux distributions are adding support for ZenFS, but Percona does not offer installation packages for those distributions yet. The libzbd package is now linked statically to the RocksDB storage engine.

    The following dependency libraries are updated to newer versions:

    • ZenFS v1.0.0

    • libzbd v2.0.1

    For more information, see Installing and configuring Percona Server for MySQL with ZenFS support.

    The following list has a number of the bug fixes for MySQL 8.0.26, provided by Oracle, and included in Percona Server for MySQL:

    • #104575: Fix for when, in the PERFORMANCE_SCHEMA.Threads table, the srv_purge_thread and srv_worker_thread values are duplicated.

    • #104387: Fix for when using a REGEX comparison, a CHARACTER_SET_MISMATCH error is thrown.

    • #104576: Fix for a high CPU load being created when accessing the second index in a partition table with many columns.

    Find the full list of bug fixes and changes in MySQL 8.0.26 Release Notes.

    Deprecated Features¶

    The TokuDB Storage Engine was declared deprecated for Percona Server for MySQL. Starting with Percona Server 8.0.26-16, the plugins are available in binary builds and packages but are disabled. The plugins will be removed from the binary builds and packages in a future version.

    New options have been added to enable the plugins if they are needed to migrate the data to another storage engine.

    The instructions on enabling the plugins and more information are available at the beginning of each TokuDB topic in the Percona Server fo MySQL documentation.

    Bugs Fixed¶

    • The libzbd user library is statically linked into ha_rocksdb.so. This linking allows the creation of a single binary package and requires the 5.9 kernel and higher.

    • Fix for ZenFS issues with sysbench using either Debian 11 or the latest libzbd user library.

    • Fix a sporadic aborting on BG write error assertion in rocksdb.bloomfilter3.

    • Fix when the WITH_ZENFS_UTILITY CMake option is set to ON. Added logic to the RocksDB CMakeLists.txt to ensure the libgflags library is installed on the system.

    • Fix for the tests that rely on the du system utility. The du utility results must be converted to computations based on the zenfs list output.

    • Fix for the zenfs mkfs to allow the command to accept a pre-existing aux_path.

    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: 2023-01-12
    Percona LLC and/or its affiliates, © 2023
    Made with Material for MkDocs

    Cookie consent

    We use cookies to recognize your repeated visits and preferences, as well as to measure the effectiveness of our documentation and whether users find what they're searching for. With your consent, you're helping us to make our documentation better. Read more about Percona Cookie Policy.