Release Notes for MariaDB Enterprise Server 10.6.18-14

With --gtid-ignore-duplicate set a transaction can be double-applied from another replication source if at applying the transaction from the initial source required retrying in parallel execution. (MDEV-33475)

Backups of server with innodb_encrypt_tables=1 can become corrupted in mariadb-backup --prepare (MDEV-33334)

With multiple GTID domains, optimistic parallel slave conflicts involving XA-PREPARE event group could not be resolved correctly which might cause unnecessary stop of the slave serve. (MDEV-34042)

The TIMESTAMP value of '1970-01-01 00:00:00' can be inserted via a INSERT ...FROM ... SELECT in strict mode although it should result in an error (MDEV-34088)

Galera-replicated events can in some cases contain the wrong time when versioning is used (MDEV-18590)

wrong row targeted with insert ... on duplicate and replace, leading to data corruption (MDEV-30046)

Using current MariaDB Enterprise Backup against an older server can result in a crash, as the system variable @@aria_log_dir_path does not exist (MDEV-31251)

When using a non-default setting for innodb_change_buffering, the server can crash (MDEV-33332)

When a fulltext search query with more than 4G inserted or updated rows is executed, the server can crash (MDEV-33383)

InnoDB is holding shared dict_sys.latch while waiting for FOREIGN KEY child table lock on DDL (MDEV-32899)

InnoDB may hang when temporarily running out of buffer pool (MDEV-33613)

For encrypted table spaces an ALTER operation can hang when an encryption thread works on the same tablespace (MDEV-33770)

EXPLAIN statement that uses a subquery which has a query plan that A) will examine less than @@expensive_subquery_limit rows and B) will use join buffer could cause a crash. (MDEV-21102)

For a SPIDER table, when deleting partitions from a table, the server can crash (MDEV-33731)

After an unsuccessful ALTER TABLE on an ARIA table due to a full temp space, any subsequent query results in the following error if it involves using temp: (MDEV-33813)

ERROR 1021 (HY000): Disk full (./org/test1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")

When replaying a binary log with mariadb-binlog, the tool can crash if the binary log includes statements related to sequences, like SELECT NEXTVAL(s) (MDEV-31779)

MariaDB Enterprise Backup fails with the following error message if the prepare step of the backup encounters a data directory which happens to store wsrep xid position in TRX SYS page: (MDEV-33540)

InnoDB: Crash recovery is broken due to insufficient innodb_log_file_size

Assertion failure when a client disconnected during transaction that is in the XA PREPARE state or when incomplete transaction was recovered from undo logs on server startup and not yet rolled back (MDEV-33278)

Failure with the following error message when streaming transaction in idle state is BF aborted: (MDEV-33509)

WSREP: Failed to apply write set with flags = (rollback | pa_unsafe)

Assertion when user commits an empty transaction for DDL that was killed during certification: (MDEV-32787)

!wsrep_has_changes(thd) || (thd->lex->sql_command == SQLCOM_CREATE_TABLE && !thd->is_current_stmt_binlog_format_row()) || thd->wsrep_cs().transaction().state() == wsrep::transaction::s_aborted

MDL lock conflict can occur if the transactions acquire explicit MDL locks from the InnoDB level when persistent statistics is re-read for a table and such a transaction is subject to BF-abort (MDEV-33136)

Graceful node shutdown can crash garbd and MariaDB Enterprise Cluster can go non-primary when SSL is used (MDEV-33495)

Wrong result sets are returned by the second execution of prepared statements from selects using mergeable derived tables pushed into external engine (MDEV-31361)

IMPORT TABLESPACE fails with column count or index count mismatch: (MDEV-30655)

ERROR 1808 (HY000): Schema mismatch (Number of columns don't match, table has x columns but the tablespace meta-data file has y columns)

A query that uses a derived table that employs constructs with side-effects, like (SELECT @var:=... ) as derived_tbl, could produce wrong results (MDEV-30975)

ORDER BY COLLATE improperly applied to non-character columns which is resulting in an unordered result set (MDEV-33318)

Inconsistent behaviors of UPDATE under Read Uncommitted & Read Committed isolation level (MDEV-26643)

When two transactions modify the data at the same time with isolation level REPEATABLE-READ, the latter transaction does take the change from the first transaction into account (MDEV-26642)

Spider/ODBC passed double quotes for names, in ANSI style (MENT-958)

Default charset doesn't work with PHP MySQLi extension (MDEV-32975)

Bad SEPARATOR value in GROUP_CONCAT on character set conversion can lead to a wrong result (MDEV-33772)

Spider returns parsing failure on valid left join select by translating the on expression to () (MDEV-33679)

When creating a temporary InnoDB table with CREATE TEMPORARY TABLE ... AS SELECT ... from an InnoDB table as a non SUPER / READ ONLY ADMIN user, the following error is shown instead of creating the table: (MDEV-33889)

ERROR 1290 (HY000): The MariaDB server is running with the --read-only option so it cannot execute this statement

• CREATE TEMPORARY TABLE (without SELECT), INSERT ... SELECT, and CREATE ... LIKE are not affected by this bug

Phantom rows caused by UPDATE of PRIMARY KEY (MDEV-32898)

Mariadb-dump trusts the server and does not validate the data. A modified dump file can include system commands used by the mariadb-client. Dumps are now loaded in the sandbox mode by default, a system call will result in an error (MDEV-33727)

Updating a case insensitive large unique key with an insensitive change of the value can result in a duplicate key error (MDEV-29345)

When setting binlog_annotate_row_events=1, an event of binlog file can be truncated (MDEV-9179)

Wrong result with semi-join and split-table derived table from queries with an IN subquery predicate in the WHERE clause and a derived table in the FROM clause to which split materialized optimization could be applied. (MDEV-23878)

With galera, correct transactions could not be committed with the following error when accessing system tables for read, and write to innodb tables in the same transaction: (MDEV-33828)

Transactional commit not supported by involved engine

A wrong result on 2-nd execution of a prepared statement is possible when selecting from a view using a merged derived table (MDEV-31277)

Original IP not shown in network related error messages when proxy_protocol is in use (MDEV-33506)

Incorrect DEFAULT expression evaluated in UPDATE (MDEV-33790)

group by optimization incorrectly removing subquery where subject buried in a function (MDEV-28621)

Replication with XA events can show decreased performance. Adapt parallel slave's round-robin scheduling to XA events (MDEV-33668)

Row locks for non-modified rows are not released at XA PREPARE (MDEV-33454)

Optimizer is sometimes choosing an index for queries with GROUP BY when it shouldn't, resulting in decreased performance. To protect compatibility to the current behavior @@optimizer_adjust_secondary_key_costs="disable_forced_index_in_group_by" has to be set to enable the fix (MDEV-33306)

Table is getting rebuild with ALTER TABLE ADD COLUMN although it should be an instant operation not requiring a rebuild (MDEV-33214)

Semi-sync Wait Point AFTER_COMMIT Slow on Workloads with Heavy Concurrency (MDEV-33551)

Aggregation functions fail to leverage uniqueness property (MDEV-30660)

• Generally, computing aggregate function with DISTINCT argument: aggregate_func(DISTINCT col1, col2, ...) requires producing a de-duplicated set of its arguments, which can be CPU-intensive

• When we select from one table the argument list includes the table's PRIMARY (or UNIQUE) key:

  SELECT aggregate_func(DISTINCT t1.primary_key, ...) FROM t1;
  

  then the arguments are guaranteed not to have duplicates. Such cases are now detected allowing the optimizer to skip de-duplication.