Release Notes for MariaDB Enterprise Server 10.4.27-18

MariaDB Enterprise Server 10.4.27-18 is a maintenance release of MariaDB Enterprise Server 10.4. This release includes a variety of fixes.

MariaDB Enterprise Server 10.4.27-18 was released on 2022-12-21.

Notable Changes

• The information_schema.INNODB_SYS_TABLESPACES view shows details about the InnoDB temporary tablespace, which is the tablespace where InnoDB temporary tables are stored. (MDEV-29479)
  • Starting with this release, the details details about the InnoDB temporary tablespace can be shown by querying for the name innodb_temporary:

     SELECT * FROM information_schema.INNODB_SYS_TABLESPACES
       WHERE name LIKE 'innodb_temporary';
    

• When a table's default collation is set to the default collation for the table's character set, SHOW CREATE TABLE shows the COLLATE clause. (MDEV-29446)
  • In previous releases, MariaDB Enterprise Server reduced the size of SHOW CREATE TABLE output by excluding the COLLATE clause if the table's default collation was set to the default collation for the table's character set.

Issues Fixed

Can result in data loss

• When a column is renamed in a partitioned table with ALTER TABLE .. RENAME COLUMN using the NOCOPY algorithm, the table can be corrupted. (MDEV-28576)

• When the InnoDB storage engine performs change buffer operations, the InnoDB Redo Log can overflow, which can cause table corruption. (MENT-1661, MDEV-29905)

Can result in a hang or crash

• When a query contains an IN/ALL/ANY predicand and the subquery contains a GROUP BY clause with an IN/ALL/ANY predicand with a single-value subquery as the left operand, the server can crash. (MDEV-29350)

• If an InnoDB table contains a foreign key constraint and the child table's DATABASE_NAME/TABLE_NAME.ibd is longer than 330 characters, when the parent table is renamed, the server can crash. (MDEV-29409)

• When a DDL statement is executed using the INPLACE algorithm and innodb_adaptive_hash_index=ON is set, the server can hang. (MDEV-27700, MDEV-29384)

• When renaming a table to a long name, the server can crash. (MDEV-29258)

• When an ALTER TABLE statement causes InnoDB to rebuild a table with a spatial index, the server can crash. (MDEV-29520)

• When an InnoDB temporary table contains a spatial index, the server can crash if the temporary table is dropped due to DROP TEMPORARY TABLE or client disconnect. (MDEV-29507)

When querying a partitioned table using the PARTITION syntax, if the WHERE clause results in an index merge, the server can crash. (MDEV-21134)

• When detecting CTE dependencies of nested CTEs that includes one or more recursive CTEs, infinite recursion can occur until the server crashes. (MDEV-29361)

• When the wsrep_notify_cmd system variable is configured to use the bundled wsrep_notify.sh script, the server can hang during startup. (MDEV-27682)

• When selecting from InnoDB's information_schema views (such as INNODB_TRX, INNODB_LOCKS, and INNODB_LOCK_WAITS), if connections with open XA transactions are disconnected or killed at the same time, the server can crash. (MDEV-29575)

• For some queries that involve tables with different but convertible character sets for columns taking part in the query, a repeatable execution of such queries in the prepared statement mode or as part of a stored routine can crash the server. (MDEV-16128)

• When executing a SELECT .. UNION .. SELECT or EXPLAIN EXTENDED statement, the server can crash. (MDEV-23160)

• When optimizer_switch='condition_pushdown_for_derived=on' is set and a view that includes a subquery is queried, the server crashes. (MDEV-16549)

• When the rolling upgrade procedure for MariaDB Enterprise Cluster (powered by Galera) is used to upgrade from ES 10.3 to ES 10.4, the joiner nodes can crash after the upgrade to ES 10.4. (MDEV-29375)
  • In previous releases, the MariaDB Error Log on the joiner node could contain the following error about the crash:

    [Note] WSREP: ####### Assign initial position for certification: 5c410a36-23a8-11ed-a44c-f6f37823dd10:3, protocol version: -1
    [ERROR] WSREP: Corrupt buffer header: addr: 0x7f722bd5b530, seqno: 7019267256999739392, size: 825111097, ctx: 0x559652a28678, flags: 14391. store: 46, type: 49
    [ERROR] mysqld got signal 6 ; 
    

• When an application-time period with an empty name is added to a table using ALTER TABLE .. ADD PERIOD IF NOT EXISTS, the server can crash. (MDEV-18873)
  • In previous releases, statements like the following could cause the server to crash:

    ALTER TABLE t
      ADD PERIOD IF NOT EXISTS FOR `` (s,e); 
    

• When the Spider storage engine's ODBC foreign data wrapper is used with MariaDB Connector/ODBC 3.1.10 and later, the server can crash. (MENT-1415)

Can result in unexpected behavior

• In the presence of replication filters, revoking privileges from a non-existing user on a primary (master) breaks replication on the replica (slave). (MDEV-28530)

• When replicate_wild_ignore_table='mysql.%' is set on a replica node, the replica node does not skip replicated SET DEFAULT ROLE statements. (MDEV-28294)

• When a Spider table has a prefix index, query results can be incorrect. (MDEV-27172)

• InnoDB can extend tablespace files when additional capacity is not required. (MDEV-13013)

• When an InnoDB table is being rebuilt and a BLOB is updated during the online rebuild, a memory leak can occur. (MDEV-29600)

• When a view is queried using a prepared statement, the query fails with the ER_NEED_REPREPARE error code. (MDEV-17124)
  • In previous releases, the following error would occur:

    ERROR 1615 (HY000): Prepared statement needs to be re-prepared 
    

• When an InnoDB table contains virtual generated columns that are indexed, InnoDB fails to purge secondary index records. (MDEV-29666)

• When using the InnoDB adaptive hash index, non-locking reads can return wrong results due to a potential ACID violation. (MDEV-28709, MDEV-29635, MDEV-27927)

• When SHOW COLUMNS is used on a temporary table, an empty result set is returned. (MDEV-28455)

• When a sequence is used as the default value in a table, rows inserted by an INSERT ... SELECT statement can be assigned the wrong values. (MDEV-29540)

When a column has both a UNIQUE index and a FULLTEXT index, full-text search using MATCH(..) AGAINST(..) does not work properly. (MDEV-29778)

• If the server is started with the --ssl option enabled, but the TLS certificates and keys are not configured, the server will advertise the TLS support in the handshake, but will not actually be able to use it. (MDEV-29811)

• With MariaDB Enterprise Cluster, when wsrep_sst_method='mariabackup' is configured, the joiner node ignores custom values for the innodb_buffer_pool_filename system variable, and the SST copies the buffer pool file to the default location instead. (MDEV-28968)

• When a TIMESTAMP column is filtered in a subquery inside the ALL operator, the results can be incorrect. (MDEV-27101)

• When the wsrep_node_incoming_address system variable does not contain a port number, the wsrep_incoming_addresses status variable shows 0 as the port number. (MDEV-28868)

• When optimizer_switch='rowid_filter=on' is enabled, performance is impacted if the rowid filter contains no elements. (MDEV-28846)

Related to install and upgrade

• When MyRocks is installed from a Debian package, the rocksdb.cnf configuration file gets installed to /etc/mysql/mariadb.conf.d/ instead of /etc/mysql/conf.d/. (MDEV-28605)

• When mariadb-upgrade is executed, spurious errors about table rebuilds are logged. (MDEV-29481)
  • In previous releases, the following messages would be logged, even though the tool already mitigated the issues itself:

     error: Table rebuild required. Please do "ALTER TABLE `TABLE_NAME` FORCE" or dump/reload to fix it!" 
    

Platforms

In alignment to the enterprise lifecycle, MariaDB Enterprise Server 10.4.27-18 is provided for:

• CentOS 7 (x86_64)

• Debian 10 (x86_64, ARM64)

• Microsoft Windows (x86_64) (MariaDB Enterprise Cluster excluded)

• Red Hat Enterprise Linux 7 (x86_64)

• Red Hat Enterprise Linux 8 (x86_64, ARM64 )

• Rocky 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)

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