Release Notes for MariaDB Enterprise Server 10.4.11-5

This fifth release of MariaDB Enterprise Server 10.4 is a maintenance release, including a variety of fixes.

MariaDB Enterprise Server 10.4.11-5 was released on 2020-01-06.

Notable Changes

• InnoDB no longer sends unnecessary warnings to the error log about maximum row size for DDL statements when innodb_strict_mode=OFF and log_warnings<=2 (MDEV-20832)

• Redundant writes to the InnoDB redo log have been removed. (MDEV-21024)

• The default for the plugin load option plugin-maturity is now stable (MENT-240)

• MariaDB Enterprise Audit and the MariaDB Audit plugin trace now add the user who initiated statements with the DELAYED option. In previous versions a system user was added. (MENT-237)

• MariaDB ColumnStore, a columnar storage engine, is now included with MariaDB Enterprise Server 10.4. Specific details on this component may be found in the ColumnStore 1.4.2 release notes.

• MariaDB Enterprise Audit no longer permits server_audit_output_type to be set to SYSLOG on Microsoft Windows. (MENT-258)

Issues Fixed

Can result in data loss

• A table could not be loaded after an instant ALTER ... ADD COLUMN or ALTER ... DROP COLUMN, if the primary key is a CHAR column with variable-length encoding like UTF8 (MDEV-21088)

• In rare conditions commits could be applied in the wrong order if the replica is running in optimistic mode. (MDEV-20707)

Can result in a hang or crash

• Primary (master) could crash when it executes RESET MASTER and a replica (slave) reconnects having reset its connection status with the primary (e.g., CHANGE MASTER TO MASTER_USE_GTID = slave_pos). (MENT-19376)

• "Out of memory" error could occur when accessing partitioned InnoDB tables. (MDEV-20611)

• A crash could occur when ADD PRIMARY KEY was executed by a connection just after another connection issued an instant ADD COLUMN to the same InnoDB table and if DMLs were executed at the same time. (MDEV-21045)

• A crash could occur when rowid filtering optimization is enabled using optimizer_switch='rowid_filter=on' (MDEV-20407)

Can result in unexpected behavior

• Client received error SEC_E_INVALID_TOKEN when SSL is used and connecting to MariaDB Enterprise Server running on Microsoft Windows. (MDEV-13492)

• The restore of Aria tables was not always possible if MariaDB Backup was using the parameters --prepare --incremental (MDEV-18310)

• An incomplete result set was returned when sort_buffer_size was too small. (MDEV-21044)

• A query with system versioning filters did not show an error when executed on not system versioned tables. (MDEV-18929)

• CHECK TABLE erroneously reported error "Found a misplaced row" for system versioned tables with history partition. (MDEV-21011)

• An instant operation could fail when adding a column and changing the collation on a non-indexed column. (MDEV-20190)

Interface Changes

• None.

Platforms

In alignment to the enterprise lifecycle, MariaDB Enterprise Server 10.4.11-5 is provided for:

• Red Hat Enterprise Linux 8

• Red Hat Enterprise Linux 7

• Red Hat Enterprise Linux 6

• CentOS 8

• CentOS 7

• CentOS 6

• Ubuntu 18.04

• Ubuntu 16.04

• Debian 10

• Debian 9

• Debian 8

• SUSE Linux Enterprise Server 15

• SUSE Linux Enterprise Server 12

• Microsoft Windows

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

Installation Instructions

• MariaDB Enterprise Server 10.4

• Enterprise Cluster Topology with MariaDB Enterprise Server 10.4

• Primary/Replica Topology with MariaDB Enterprise Server 10.4

• Enterprise Spider Sharded Topology with MariaDB Enterprise Server 10.4

• Enterprise Spider Federated Topology with MariaDB Enterprise Server 10.4

Upgrade Instructions

• Upgrade to MariaDB Enterprise Server 10.4

• Upgrade from MariaDB Community Server to MariaDB Enterprise Server 10.4