Release Notes for MariaDB Enterprise Server 10.3.31-13


This thirteenth release of MariaDB Enterprise Server 10.3 is a maintenance release. This release includes a variety of fixes.

MariaDB Enterprise Server 10.3.31-13 was released on 2021-09-14.

Fixed Security Vulnerabilities

CVE (with link)

CVSS base score











Backported Features

This release of MariaDB Enterprise Server includes features backported from MariaDB Enterprise Server 10.6.

  • Enhanced consistency for Semi-Sync Replication

    • When rpl_semi_sync_slave_enabled=ON, consistency is guaranteed for a Primary server in an HA (Primary/Replica) topology when using semi-synchronous replication. (MDEV-21117)

    • Prior to this release, when using semi-synchronous replication, if a Primary crashed before sending a transaction to the Replica, on restart the Primary could recover incomplete InnoDB transactions when rejoining as a Replica.

    • With this release, when using semi-synchronous replication and with rpl_semi_sync_slave_enabled=ON, incomplete transactions will be rolled-back on the Replica, ensuring the new Primary (former Replica) and new Replica (former Primary) remain in sync.

Notable Changes

  • Galera updated to 25.3.34

  • ARM64 is now supported for several platforms.

  • The script wsrep_sst_mariabackup checks all server-related configuration groups when processing a configuration file. (MDEV-25669)

    • Prior to this release, only the [mysqld] configuration group was checked when processing a configuration file.

  • MariaDB Enterprise Backup expects --stream=mbstream to stream a backup using the included mbstream utility. (MDEV-15730)

    • Prior to this release, MariaDB Enterprise Backup expected --stream=xbstream, even though the xbstream utility had been renamed to mbstream.

  • InnoDB no longer acquires advisory file locks by default. (MDEV-24393)

  • The information_schema.KEYWORDS table has been added and can be used to view details about SQL keywords. (MDEV-25129)

  • The information_schema.SQL_FUNCTIONS table has been added and can be used to view details about built-in functions. (MDEV-25129)

  • When using data-at-rest encryption with the file_key_management encryption plugin, InnoDB will automatically disable key rotation checks. (MDEV-14180)

Issues Fixed

Can result in data loss

  • When an ALTER TABLE ... ADD COLUMN statement is executed with ALGORITHM=INSTANT, a warning is not raised when the operation causes the default value of a DATE column to be truncated. (MDEV-25971)

Can result in a hang or crash

  • Possible server crash when pushing a WHERE condition over a mergeable derived table / view / CTE DT into a grouping view / derived table / CTE V whose item list contained set functions with constant arguments. (MDEV-25635)

  • Server crashes on second execution of a stored procedure or a prepared statement when the corresponding query executes a window function on a view, CTE, or derived table. (MDEV-25565)

  • Server crashes possible when executing a prepared statement with a hanging recursive CTE. (MDEV-26135)

  • Server crashes while executing query with a CTE in a prepared statement or stored procedure. (MDEV-26025)

  • Server crashes while executing query with a recursive CTE that is indirectly used twice. (MDEV-26202)

  • Server crashes due to infinite recursion while processing an embedded recursive CTE with missing RECURSIVE. (MDEV-26095)

  • Server crashes in InnoDB deadlock checker under high load. (MDEV-25594)

  • Server crashes when a virtual generated column has a prefix index. (MDEV-26220)

  • Server crashes possible when using virtual generated columns. (MDEV-18166, MDEV-18249)

  • Server crashes while executing DELETE when a YEAR column is truncated. (MDEV-17890)

  • Server crashes while executing SET ROLE when a hostname cannot be resolved. (MDEV-26081)

  • Server crashes when a subquery references an outer column in an ORDER BY clause. (MDEV-25629)

  • Server crashes due to a stack overrun in the query optimizer while executing query with more than 32 equality conditions that compare columns of different tables (such as tableX.colX=tableY.colY). (MDEV-17783)

  • Server crashes when a window function is the left expression of an IN(SELECT ..) subquery. (MDEV-25630)

  • Possible deadlock on a Replica server using GTID Replication when slave_parallel_mode=optimistic and OPTIMIZE TABLE, REPAIR TABLE, or ANALYZE TABLE is executed. (MDEV-17515)

  • Server crashes when ALTER TABLE .. ADD FULLTEXT INDEX fails on an InnoDB table. (MDEV-25721)

  • Server crashes while executing TRUNCATE on an InnoDB table with a Full-Text Index. (MDEV-25663)

  • Server crashes while executing ALTER TABLE on an InnoDB table with virtual generated columns that are indexed. (MDEV-25872)

  • Server crashes while executing CHECK TABLE when innodb_read_only is enabled. (MDEV-25886)

  • Crash when parsing query using derived table containing table value constructors (MDEV-25484)

  • Server crashes when a connection is killed while executing ALTER TABLE after previously locking the table with LOCK TABLE. (MDEV-17749)

  • Server crashes when the global value of the system_versioning_asof system variable is set using a stored function that reads the value of another global system variable. (MDEV-16481)

Can result in unexpected behavior

Interface Changes


In alignment to the enterprise lifecycle, MariaDB Enterprise Server 10.3.31-13 is provided for:

  • CentOS 7 (x86_64)

  • CentOS 8 (x86_64, ARM64)

  • Debian 9 (x86_64, ARM64)

  • Debian 10 (x86_64, ARM64)

  • Red Hat Enterprise Linux 7 (x86_64)

  • Red Hat Enterprise Linux 8 (x86_64, ARM64)

  • SUSE Linux Enterprise Server 12 (x86_64)

  • SUSE Linux Enterprise Server 15 (x86_64, ARM64)

  • Ubuntu 18.04 (x86_64, ARM64)

  • Ubuntu 20.04 (x86_64, ARM64)

  • Microsoft Windows (x86_64)

Some components of MariaDB Enterprise Server might not support all platforms. For additional information, see "MariaDB Corporation Engineering Policies".