Release Notes for MariaDB Enterprise Server 10.3.20-4

Release Notes for MariaDB Enterprise Server 10.3.20-4

This fourth release of 10.3 is a maintenance release, including a variety of fixes.

MariaDB Enterprise Server 10.3.20-4 was released on 2019-11-18.

Fixed Security Vulnerabilities

Notable Changes

• New option innodb_change_buffer_dump added to Debug builds. This option dumps the contents of the change buffer to the server error log at startup. This is useful when a slow shutdown cannot be performed successfully. ()

• Eliminated unnecessary logging of warnings to the error log regarding maximum row size for DML statements, which should be present only for DDL operations. (MENT-454)

Issues Fixed

Can result in data loss

• ... could overwrite binary logs if certain conditions were present. () Conditions that must be present to trigger this bug:

  • mariadb-backup is executed on the MariaDB Server host, and

  • Configuration files from the master are used, and

  • Configuration files enable binary logging

Can result in a hang or crash

• Prior removal of a `#FULLTEXT

index from an table can cause a hang on startup. ()`

• Removal of a `#FULLTEXT

index from an table can cause a hang. ()`

• Change to an table containing a `#FULLTEXT

index can cause the Server to become unresponsive. ()`

• Removal of a virtual column used by an index can result in a crash. (MENT-434)

• , or on an table can cause the Server to become unresponsive. ()

• INSTANT ADD COLUMN on an table, which includes a FOREIGN KEY definition can result in a crash. (MENT-435)

Can result in unexpected behavior

• Unnecessary logging of warnings to the error log regarding maximum row size for DML statements, which should be present only for DDL operations. (MENT-454)

• After server restart, a SELECT using a #FULLTEXT

index on tables can fail to return some data. ()`

• and MariaDB Backup, when using mbstream, recreated xtrabackup_info in the same directory as the backup file. Repeated extraction of the backup could fail. ()

• mysqld_multi.sh script could not be launched and returned a syntax error. (MENT-433)

• Though not supported on Microsoft Windows, the server_audit_output_type system variable for the Audit plugin accepted a SYSLOG value. ()

Related to install and upgrade

• Installing MariaDB Enterprise Server from the repository failed on CentOS 7 due to package dependencies. (MENT-420)

Interface Changes

• WARN_INNODB_PARTITION_OPTION_IGNORED error code added

Platforms

In alignment with the , MariaDB Enterprise Server 10.3.20-4 is provided for:

• CentOS 8

• CentOS 7

• CentOS 6

• Debian 10

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