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      • Release notes index
      • 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)
        • 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
          • Installation
          • New Features
          • Improvements
          • Bugs Fixed
          • Upcoming Features
      • Limiting the disk space used by binary log files
      • Extended mysqlbinlog
      • Slow query log rotation and expiration
      • Extended SELECT INTO OUTFILE/DUMPFILE
      • Support for PROXY protocol
      • SEQUENCE_TABLE(n) function
      • Trigger updates
      • Expanded fast index creation
      • Kill idle transactions
      • Percona Toolkit UDFs
      • Utility user
      • The ProcFS plugin
      • Adaptive network buffers
      • Thread pool
      • Quickstart overview
      • 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
      • Binary logs and replication improvements
      • Post-installation
      • Working with AppArmor
      • Working with SELinux
      • Extended SHOW GRANTS
        • Backup locks
        • Extended mysqldump
        • Start transaction with consistent snapshot
        • Using LDAP authentication plugins
        • LDAP authentication plugin system variables
      • Data masking
      • PAM authentication plugin
      • SSL improvements
      • Server variables
      • FIDO authentication plugin
      • Encryption functions
        • 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
      • User statistics
      • Slow query log
      • Process list
      • Misc. INFORMATION_SCHEMA tables
      • Use Percona Monitoring and Management (PMM) Advisors
      • Too many connections warning
      • Handle corrupted tables
      • Thread based profiling
      • Stacktrace
      • Libcoredumper
        • The Percona XtraDB storage engine
        • Improved MEMORY storage engine
        • Improved InnoDB I/O scalability
        • Enforcing storage engine
        • Extended show engine InnoDB status
        • Show storage engines
        • Compressed columns with dictionaries
        • InnoDB full-text search improvements
        • XtraDB changed page tracking
        • XtraDB performance improvements for I/O-bound highly-concurrent workloads
        • Multiple page asynchronous I/O requests
        • Prefix index queries optimization
        • Limit the estimation of records in a Query
        • InnoDB page fragmentation counters
        • 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

    • Installation
    • New Features
    • Improvements
    • Bugs Fixed
    • Upcoming Features

    Percona Server for MySQL 8.0.12-2rc1¶

    Following the alpha release announced earlier, Percona announces the release candidate of Percona Server for MySQL 8.0.12-2rc1 on October 31, 2018. Download the latest version from the Percona web site or the Percona Software Repositories.

    This release is based on MySQL 8.0.12 and includes all bug fixes in it. It is a Release Candidate quality release and it is not intended for production. If you want a high quality, Generally Available release, use the current Stable version (the most recent stable release at the time of writing in the 5.7 series is 5.7.23-23).

    Percona provides completely open-source and free software.

    Installation¶

    As this is a release candidate, installation is performed by enabling the testing repository and installing the software via your package manager. For Debian based distributions, see apt installation instructions; for RPM based distributions. see yum installation instructions. Note that in both cases after installing the current percona-release package, you’ll need to enable the testing repository in order to install Percona Server for MySQL for MySQL 8.0.12-2rc1. For manual installations, you can download from the testing repository directly through our website.

    New Features¶

    • #4550: Native Partitioning support for MyRocks storage engine

    • #3911: Native Partitioning support for TokuDB storage engine

    • #4946: Add an option to prevent implicit creation of column family in MyRocks

    • #4839: Better default configuration for MyRocks and TokuDB

    • InnoDB changed page tracking has been rewritten to account for redo logging changes in MySQL 8.0.11. This fixes fast incremental backups for PS 8.0

    • #4434: TokuDB ROW_FORMAT clause has been removed, compression may be set by using the session variable tokudb_row_format instead.

    Improvements¶

    • Several packaging changes to bring Percona packages more in line with upstream, including split repositories. As you’ll note from our instructions above we now ship a tool with our release packages to help manage this.

    Bugs Fixed¶

    • #4785: Setting version_suffix to NULL could lead to handle_fatal_signal (sig=11) in Sys_var_version::global_value_ptr

    • #4788: Setting log_slow_verbosity and enabling the slow_query_log could lead to a server crash

    • #4937: Any index comment generated a new column family in MyRocks

    • #1107: Binlog could be corrupted when tmpdir got full

    • #1549: Server side prepared statements lead to a potential off-by-second timestamp on slaves

    • #4937: rocksdb_update_cf_options was useless when specified in my.cnf or on command line.

    • #4705: The server could crash on snapshot size check in RocksDB

    • #4791: SQL injection on slave due to non-quoting in binlogged ROLLBACK TO SAVEPOINT

    • #4953: rocksdb.truncate_table3 was unstable

    Other bugs fixed:

    • #4811: 5.7 Merge and fixup for old DB-937 introduces possible regression

    • #4885: Using ALTER ... ROW_FORMAT=TOKUDB_QUICKLZ lead to InnoDB: Assertion failure: ha_innodb.cc:12198:m_form->s->row_type == m_create_info->row_type

    • Numerous testsuite failures/crashes

    Upcoming Features¶

    • New encryption features in Percona Server for MySQL 5.7 will be ported forward to Percona Server for MySQL 8.0

    • Adding back in column compression with custom data dictionaries and expanded fast index creation.

    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
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