The Ultimate Guide to High Availability with MariaDB
This is a read-only copy of the MariaDB Knowledgebase generated on 2025-03-12. For the latest, interactive version please visit https://mariadb.com/kb/.

Release Notes for MariaDB Enterprise Server 10.6.9-5

MariaDB Enterprise Server 10.6.9-5 is a maintenance release of MariaDB Enterprise Server 10.6. This release includes a variety of fixes.

MariaDB Enterprise Server 10.6.9-5 was released on 2022-09-12.

Fixed Security Vulnerabilities

CVE (with cve.org link)CVSS base score
CVE-2023-51577.5
CVE-2018-250327.5
CVE-2022-320916.5
CVE-2022-320896.5
CVE-2022-320846.5
CVE-2022-320826.5
CVE-2022-320816.5

Backported Features

MariaDB Enterprise Server enables a predictable development and operations experience through an enterprise lifecycle. These new features have been backported after reaching maturity in MariaDB Community Server:

  • The UUID data type has been backported from MariaDB Community Server 10.7 for more efficient storage of UUID values. (MENT-1459)

Notable Changes

  • Galera has been updated to 26.4.13-1
  • Debian 9 support has been discontinued.
  • Red Hat Enterprise Linux 9 support has been added.
  • Rocky Linux 9 support has been added.
  • OpenSSL 3.0 support has been added for MariaDB Enterprise Cluster (powered by Galera) (MDEV-25949)

Issues Fixed

Can result in data loss

  • When mariadb-backup is executed with the --rsync command-line option, the backup tries to copy the InnoDB buffer pool dump file, which is located at the path defined by the innodb_buffer_pool_filename system variable. (MDEV-28781)
    • Starting with this release, mariadb-backup only copies the InnoDB buffer pool dump file during State Snapshot Transfers (SSTs) for MariaDB Enterprise Cluster, powered by Galera.
  • With MariaDB Enterprise Cluster, when a value is retrieved from an InnoDB sequence using the NEXTVAL() function, the change is not replicated. (MDEV-27862)
    • Starting with this release, InnoDB sequences are properly replicated when they are defined with NOCACHE.
  • When an InnoDB table's collation is changed using ALTER TABLE with the INPLACE or NOCOPY algorithms, duplicate entries in unique indexes are not detected. (MDEV-26294)

Can result in a hang or crash

  • When INSERT .. SELECT .. GROUP BY is executed and the GROUP BY clause contains a derived table, the server can crash. (MDEV-28617)
  • When a query contains an ANY(SELECT .. GROUP BY(SELECT ..)) predicand with a redundant subquery in the GROUP BY clause, the server can crash. (MDEV-29139)
  • When ALTER TABLE .. ADD is used to add a column with the INSTANT algorithm, the server can crash if the ROW_FORMAT in the .frm file does not match the actual row format used by the data file. (MDEV-26577)
    • For tables created prior to MariaDB Server 10.2, the ROW_FORMAT in the .frm file could be inconsistent with the actual row format used by the data file. If the server were upgraded to MariaDB Enterprise Server 10.6, the inconsistency could remain.
  • When INSERT .. SELECT is executed and the SELECT query calls an aggregate or window function, the server can crash with a segmentation fault. (MDEV-26427)
  • When a query uses the DISTINCT keyword and calls an aggregate function as an argument for an always-constant function, the server can crash. (MDEV-23809)
    • An always-constant function is a function that always returns a constant value, even if the function's arguments are not constant.
    • For example, the COLLATION() function is an always-constant function.
  • When an EXISTS predicate or an IN, ALL, or ANY predicand is used in an eliminated GROUP BY clause, the server can crash. (MENT-1606, MDEV-29350)
  • When an IN subquery is used outside the context of a regular query (such as in a stored procedure), the server can crash. (MDEV-22001)
  • When MariaDB Enterprise Cluster is used and the Galera replication TCP port receives non-Galera network traffic, the server can crash. (MDEV-25068)
    • In previous releases, when the crash occurred, the following messages would appear in the MariaDB error log: 
      terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<std::system_error> >'
what():  remote_endpoint: Transport endpoint is not connected
[ERROR] mysqld got signal 6 ;
  • When a generated column is added to an InnoDB table with the INSTANT algorithm, the server can crash due to a buffer overflow. (MDEV-26420)
  • When InnoDB performs crash recovery on startup, the server can crash when the redo log contains a RENAME TABLE statement performed against a table located in the system tablespace. (MDEV-28752)

Can result in unexpected behavior

  • For multi-table UPDATE or DELETE queries, the optimizer fails to apply partition pruning optimization for the table that is updated or deleted from. (MDEV-28246)
  • When an IN condition contains a mixture of numeric and string values, results can be inconsistent. (MDEV-21445)
  • When a transaction can't be fully written to the binary log, but the transaction can be safely rolled back, a LOST_EVENTS incident event is written to the binary log. (MDEV-21443)
    • In previous releases, this problem could cause replica servers to encounter the following error: 
      Last_SQL_Errno	1590
Last_SQL_Error	The incident LOST_EVENTS occurred on the master. Message: error writing to the binary log
    • Starting with this release, a LOST_EVENTS incident is only written to the binary log when safe rollback is not possible.
  • When a replica server replicates an incident event, the details about the failure are not in the primary server's error log, the replica server's error log, or the output of SHOW REPLICA STATUS. (MDEV-21087)
  • When a table is created from a SELECT statement that uses a recursive CTE, the table can use unexpected data types and contain truncated data if the calculated values from the recursive part of the CTE do not fit in the column types that are taken from the non-recursive part of the CTE. (MDEV-12325)
    • Starting with this release, the CTE calculation is aborted when the calculated values do not fit in the column types. When this occurs, a warning or error (depending on sql_mode is raised with the ER_WARN_DATA_OUT_OF_RANGE error code and the following error message: 
      Out of range value for column 'COLUMN_NAME' at row ROW_NUM
  • When mariadb client uses EditLine instead of readline (such as on Debian and Ubuntu), Unicode characters are not accepted. (MDEV-28197)
  • When the optimizer chooses a semi-join optimization for a subquery, the LooseScan and FirstMatch strategies are not considered for certain queries where they would be appropriate, and they are considered for certain queries where they would be inappropriate. (MDEV-28749)
  • When FULLTEXT search is performed on an InnoDB table, the results are incorrect when the search term contains an apostrophe ('). (MDEV-20797)
    • Starting with this release, when a search term contains an apostrophe ('), InnoDB tokenizes the word at the apostrophe, ignores the first token, and matches against the second token.
  • After upgrading from old versions of MariaDB Server, some ALTER TABLE operations fail if ALGORITHM=NOCOPY is specified. (MDEV-28727)
    • In previous releases, the following error could be raised: 
      ERROR 1845 (0A000): ALGORITHM=NOCOPY is not supported for this operation. Try ALGORITHM=INPLACE
  • When a replica server is replicating from a primary server that is too old to write explicit_defaults_for_timestamp to the binary log, the replica server ignores its own value and assumes that the value should be OFF. (MDEV-29078)
    • Starting with this release, the replica server determines an optimal value for explicit_defaults_for_timestamp based on the version of the primary server. If the primary server is too old to write its value to the binary log, the replica server uses its own value.
  • When a UUID or INET6 column is referenced in a WHERE col IN(SELECT ..) subquery of an UPDATE or DELETE statement, the query does not affect the correct number of rows. (MDEV-28491)
  • When a BINARY column is used to store UUIDs and a SELECT statement filters the column with an IN clause, the query can be very slow if the UUIDs are specified in hexadecimal. (MDEV-25020)
  • When mariadb-backup is used to prepare a backup, the operation can fail if the backup contains DDL. (MDEV-28974)
    • In previous releases, when the backup failed, the output could contain messages like the following: 
[ERROR] InnoDB: Attempted to open a previously opened tablespace. Previous tablespace:./DATABASE_NAME/TABLE_NAME.ibd uses space ID: SPACE_ID. Cannot open filepath: DATABASE_NAME/TABLE_NAME.ibd which uses the same space ID.
[Warning] InnoDB: We do not continue the crash recovery, because the table may become corrupt if we cannot apply the log records in the InnoDB log to it. To fix the problem and start mariadbd:
[Note] InnoDB: 1) If there is a permission problem in the file and mysqld cannot open the file, you should modify the permissions.
[Note] InnoDB: 2) If the tablespace is not needed, or you can restore an older version from a backup, then you can remove the .ibd file, and use --innodb_force_recovery=1 to force startup without this file.
[Note] InnoDB: 3) If the file system or the disk is broken, and you cannot remove the .ibd file, you can set --innodb_force_recovery.
##mariadb-backup##: srv_start() returned 11 (Generic error).
  • When mariadb-backup is used to perform a backup while DDL is being executed, the output can contain excessive messages about DDL tracking. (MDEV-29137)
    • In previous releases, the output could contain many messages like the following: 
      DDL tracking : modify SPACE_ID "./DATABASE_NAME/TABLE_NAME.ibd"

Changes in Storage Engines

Interface Changes

  • mariadb --enable-cleartext-plugin command-line option added
  • mariadb-backup --sst-max-binlogs command-line option removed
  • mariadbd --spider-direct-aggregate command-line option added
  • sys_guid FUNCTION plugin added
  • uuid DATA TYPE plugin added
  • uuid FUNCTION plugin added

Platforms

In alignment to the enterprise lifecycle, MariaDB Enterprise Server 10.6.9-5 is provided for:

  • CentOS 7 (x86_64)
  • Debian 10 (x86_64, ARM64)
  • Debian 11 (x86_64, ARM64)
  • Microsoft Windows (x86_64)
  • Red Hat Enterprise Linux 7 (x86_64)
  • Red Hat Enterprise Linux 8 (x86_64, ARM64)
  • Red Hat Enterprise Linux 9 (x86_64, ARM64)
  • Rocky Linux 8 (x86_64, ARM64)
  • Rocky Linux 9 (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)
  • Ubuntu 22.04 (x86_64, ARM64)

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

Installation Instructions

Upgrade Instructions

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