Release Notes for MariaDB Enterprise Server 10.3.21-5

Overview

This fifth release of MariaDB Enterprise Server 10.3 is a maintenance release, including a variety of fixes.

MariaDB Enterprise Server 10.3.21-5 was released on 2020-01-06.

Notable Changes

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)

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)

Can result in unexpected behavior

Interface Changes

  • None.

Platforms

In alignment to the enterprise lifecycle, MariaDB Enterprise Server 10.3.21-5 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".

Note

CentOS 6, Debian 8, and Red Hat Enterprise Linux 6 are no longer supported as per the MariaDB Engineering Policy. Older releases are available from the MariaDB Downloads page. Instructions for installation are included as a README file within the download.