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    • 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)
        • 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
          • New Features
          • Bugs Fixed
        • 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
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        • 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

    • New Features
    • Bugs Fixed

    Percona Server for MySQL 8.0.15-6¶

    Percona announces the release of Percona Server for MySQL 8.0.15-6 on May 07, 2019 (downloads are available here and from the Percona Software Repositories).

    This release includes fixes to bugs found in previous releases of Percona Server for MySQL 8.0.

    Percona Server for MySQL 8.0.15-6 is now the current GA release in the 8.0 series. All of Percona’s software is open-source and free.

    Percona Server for MySQL 8.0 includes all the features available in MySQL 8.0 Community Edition in addition to enterprise-grade features developed by Percona. For a list of highlighted features from both MySQL 8.0 and Percona Server for MySQL 8.0, please see the GA release announcement.

    Note

    If you are upgrading from 5.7 to 8.0, please ensure that you read the upgrade guide and the document Changed in Percona Server for MySQL 8.0.

    New Features¶

    • The server part of MyRocks cross-engine consistent physical backups has been implemented by introducing rocksdb_disable_file_deletions and rocksdb_create_temporary_checkpoint session variables. These variables are intended to be used by backup tools. Prolonged use or other misuse can have serious side effects to the server instance.

    • RocksDB WAL file information can now be seen in the performance_schema.log_status table.

    • New Audit_log_buffer_size_overflow status variable has been implemented to track when an Audit Log Plugin entry was either dropped or written directly to the file due to its size being bigger than audit_log_buffer_size variable.

    Bugs Fixed¶

    • TokuDB and MyRocks native partitioning handler objects were allocated from a wrong memory allocator. Memory was released only on shutdown and concurrent access to global memory allocator caused memory corruptions and therefore crashes. Bug fixed #5508.

    • using TokuDB or MyRocks native partitioning and index_merge could lead to a server crash. Bugs fixed #5206, #5562.

    • upgrade from Percona Server for MySQL 5.7.24 to Percona Server for MySQL 8.0.13-3 wasn’t working with encrypted undo tablespaces. Bug fixed #5223.

    • keyring_vault_plugin couldn’t be initialized on Ubuntu Cosmic 17.10. Bug fixed #5453.

    • rotated key encryption did not register encryption_key_id as a valid table option. Bug fixed #5482.

    • INFORMATION_SCHEMA.GLOBAL_TEMPORARY_TABLES queries could crash if online ALTER TABLE was running in parallel. Bug fixed #5566.

    • setting the log_slow_verbosity to include innodb value and enabling the slow_query_log could lead to a server crash. Bug fixed #4933.

    • compression_dictionary operations were not allowed under innodb-force-recovery. Now they work correctly when innodb_force_recovery is <= 2, and are forbidden when innodb_force_recovery is >= 3. Bug fixed #5148.

    • BLOB entries in the binary log could become corrupted in case when a database with Blackhole tables served as an intermediate binary log server in a replication chain. Bug fixed #5353.

    • FLUSH CHANGED_PAGE_BITMAPS would leave gaps between the last written bitmap LSN and the InnoDB checkpoint LSN. Bug fixed #5446.

    • XtraDB changed page tracking was missing pages changed by the in-place DDL. Bug fixed #5447.

    • innodb_system tablespace information was missing from the INFORMATION_SCHEMA.innodb_tablespaces view. Bug fixed #5473.

    • undo log tablespace encryption status is now available through INFORMATION_SCHEMA.innodb_tablespaces view. Bug fixed #5485 (upstream #94665).

    • enabling temporay tablespace encryption didn’t mark the innodb_temporary tablespace with the encryption flag. Bug fixed #5490.

    • server would crash during bootstrap if innodb_encrypt_tables was set to 1. Bug fixed #5492.

    • fixed intermittent shutdown crashes that were happening if Thread Pool was enabled. Bug fixed #5510.

    • compression dictionary INFORMATION_SCHEMA views were missing when datadir was upgraded from 8.0.13 to 8.0.15. Bug fixed #5529.

    • innodb_encrypt_tables variable accepted FORCE option only as a string. Bug fixed #5538.

    • ibd2sdi utility was missing in Debian/Ubuntu packages. Bug fixed #5549.

    • Docker image is now ignoring password that is set in the configuration file when first initializing. Bug fixed #5573.

    • long running ALTER TABLE ADD INDEX could cause a semaphore wait > 600 assertion. Bug fixed #3410 (upstream #82940).

    • system keyring keys initialization wasn’t thread safe. Bugs fixed #5554.

    • Backup Locks was blocking DML for RocksDB. Bug fixed #5583.

    • PerconaFT locktree library was re-licensed to Apache v2 license. Bug fixed #5501.

    Other bugs fixed: #5243, #5484, #5512, #5523, #5536, #5550, #5570, #5578, #5441, #5442, #5456, #5462, #5487, #5489, #5520, and #5560.

    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: 2022-09-22
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