Percona Server for MySQL 8.0.41-32 (2025-02-)¶

Percona Server for MySQL 8.0.41-32 includes all the features and bug fixes available in the MySQL 8.0.41 Community Edition and enterprise-grade features developed by Percona.

Release highlights¶

Extends the Encryption user-defined functions with the following:
- Support for pkcs1, oaep, or no padding for RSA encrypt and decrypt operations
- Support for pkcs1 or pkcs1_pss padding for RSA sign and verify operations
- encryption_udf.legacy_padding_scheme system variable to manage legacy padding schemes
- Character set awareness
Improves the Data masking performance by introducing an internal term cache. The new cache speeds up lookups for gen_blocklist() and gen_dictionary() functions by storing dictionary data in memory. However, if the dictionary table is modified directly (outside of the proper functions), the cache may become out of sync. To fix this, use the new masking_dictionaries_flush() function.

Changes also affect row-based replication: dictionary changes on the source server are replicated, but the term cache on the replica doesn’t update immediately. To address this, a new system setting, component_masking_functions.dictionaries_flush_interval_seconds(), can be set to automatically refresh the cache at specified intervals, helping replicas stay in sync.

Find more detailed information in the Data masking overview and in the Data masking component functions.

Improvements and bug fixes provided by Oracle for MySQL 8.0.41 and included in Percona Server for MySQL are the following:

Fixed an assertion in debug builds where certain IO buffer serializations caused system hangs. (Bug #37139618)
Resolved a failure when dropping the primary key and adding a new AUTO_INCREMENT column as the primary key in descending order using the INPLACE algorithm resulted in failure. (Bug #36658450)
Fixed incorrect results, including missing rows, in queries that used a descending primary key with the index_merge optimization. (Bug #106207, Bug #33767814)
Addressed a replication channel issue where MySQL failed to stop the channel properly when large transactions were being processed, and STOP REPLICA was requested. This issue also prevented graceful server shutdown, requiring process termination or system restart. (Bug #115966, Bug #37008345)

Find the complete list of bug fixes and changes in the MySQL 8.0.41 Release Notes.

PS-9391: The replication broke with the error HA_ERR_KEY_NOT_FOUND when the slave_rows_search_algorithms were set to INDEX_SCAN,HASH_SCAN.
PS-9416: The error messages from the Key Management Interoperability Protocol (KMIP) component were not descriptive.
PS-9537: When building a new component that used mysql_command_xxx services (such as mysql_command_factory, mysql_command_query, etc.), it was impossible to reuse the same connection to run multiple queries. This issue was observed with SELECT queries, but it may also apply to INSERT, UPDATE, and DELETE operations.
PS-9542: Added Clang-19 to Azure pipelines, and fixed the clang-19 compilation issues.
PS-9551: When building a new component that used mysql_command_xxx services (such as mysql_command_factory, mysql_command_query, etc.), a server exit was encountered when setting the MYSQL_COMMAND_LOCAL_THD_HANDLE option.
PS-9611: An assertion failure occurred during server shutdown: !is_set() || m_can_overwrite_status.
PS-9612: Percona Server build failed if more than 128 threads were available. Percona merged the fix form MariaDB.

Download product binaries, packages, and tarballs at Percona Product Downloads

Last update: 2025-02-05