Aurora MySQL database engine updates 2021-11-12 (version 2.09.3) (Deprecated)

CVE-2021-23841

CVE-2021-3712

CVE-2021-3449

CVE-2021-2307

CVE-2021-2226

CVE-2021-2174

CVE-2021-2171

CVE-2021-2169

CVE-2021-2166

CVE-2021-2154

CVE-2021-2060

CVE-2021-2032

CVE-2021-2001

CVE-2020-28196

CVE-2020-14769

CVE-2019-17543

CVE-2019-2960

Introduced an optimization which can reduce contention for queries that are executed on tables in information_schema.

Add support for ECDHE SSL ciphers.

Fixed an issue which, in rare conditions, can cause a writer instance to restart when an in-memory data-integrity check fails.

Fixed an issue which, in rare conditions, can cause the database instance to restart when the cluster volume is expanding while binary logging is enabled.

Fixed a rare race condition during a database instance restart, which can cause more than one restart.

Fixed an issue which can cause a database instance restart to fail when the database has a large number of user and privilege combinations.

Fixed an issue with parallel query which can cause the database to restart when executing SQL statements with LIMIT clause.

Fixed an issue with incorrect reporting of aurora replication lag.

Fixed an issue which can cause general_log and slow_log tables to become inaccessible after in-place major version upgrade from Aurora-MySQL 1.x (based on MySQL 5.6) to Aurora-MySQL 2.x (based on MySQL 5.7).

Fixed an issue which, in rare cases, can cause the database instance to restart when innodb_trx, innodb_locks or innodb_lockwaits tables are queried while the database is under heavy workload. Monitoring tools and features such as performance insights may query such tables.

Fixed an issue which can cause a database instance to restart when "FLUSH TABLES WITH READ LOCK" SQL statement is executed.

Fixed an issue where the InnoDB purge process pauses during the deletion of a reader instance leading to a temporary increase in history list length.

Fixed an issue with parallel query which can cause the database to restart when executing a SQL statement against a table containing a virtual column.

Fixed an issue with parallel query which can cause the database to return incorrect groupings or sort order when executing queries with GROUP BY clause and a WHERE clause containing a range predicate.

Fixed an issue in parallel query which, in rare conditions, can cause the database to restart when executing SQL statements with JSON functions.

Fixed an issue which, in rare conditions, can cause the writer instance in primary Global Database cluster to restart because of a race condition during Global Database Replication.

Fixed an issue that can cause a Binlog replica to stop with an HA_ERR_FOUND_DUPP_KEY error when replicating certain DDL and DCL statements. The issue occurs when the source instance is configured with MIXED binary logging format and READ COMMITTED or READ UNCOMMITTED isolation level.

Fixed an issue which, in rare conditions, can cause the database instance to restart when using XA transactions in READ COMMITTED isolation level.

Fixed an issue where the value of a TIMESTAMP column of an existing row is updated to the latest timestamp when all of the following conditions are satisfied: 1. a trigger exists for the table; 2. an INSERT is performed on the table that has an ON DUPLICATE KEY UPDATE clause; 3. the inserted row can cause a duplicate value violation in a UNIQUE index or PRIMARY KEY; and 4. one or more columns are of TIMESTAMP data type and have a default value of CURRENT_TIMESTAMP.

Fixed an issue which, in rare conditions, can cause a reader instance to restart due to an incorrect check processing.

Fixed an issue which can cause the reader instance to restart when the writer instance grows the database volume to cross specific volume size boundaries.

Fixed an issue which can cause longer restart times for database instances using cloned cluster volumes.

Fixed an issue where a database instance restart may fail one or more times after a TRUNCATE TABLE operation was performed on the writer instance.

Fixed an issue which, in rare conditions, can cause the database instance to restart.

Fixed an issue which, in rare conditions, can cause the writer instance to restart when the database volume grows to a multiple of 160GB.

Bug #23533396 - When adding a new index, the server dropped an internally defined foreign key index and attempted to use a secondary index defined on a virtual generated column as the foreign key index, causing a server exit. InnoDB now permits a foreign key constraint to reference a secondary index defined on a virtual generated column.

Bug #29550513 - Replication: A locking issue in the WAIT_FOR_EXECUTED_GTID_SET() function can cause the server to hang in certain circumstances. The issue has now been corrected.

Asynchronous key prefetch (AKP). For more information, see Optimizing Aurora indexed join queries with asynchronous key prefetch in the Amazon Aurora User Guide.

Hash joins. For more information, see Optimizing large Aurora MySQL join queries with hash joins in the Amazon Aurora User Guide.

Native functions for synchronously invoking Amazon Lambda functions. For more information, see Invoking a Lambda function with an Aurora MySQL native function in the Amazon Aurora User Guide.

Scan batching. For more information, see Aurora MySQL database engine updates 2017-12-11 (version 1.16) (Deprecated).

Migrating data from MySQL using an Amazon S3 bucket. For more information, see Migrating data from MySQL by using an Amazon S3 bucket in the Amazon Aurora User Guide.

Group replication plugin

Increased page size

InnoDB buffer pool loading at startup

InnoDB full-text parser plugin

Multisource replication

Online buffer pool resizing

Password validation plugin

Query rewrite plugins

Replication filtering

The CREATE TABLESPACE SQL statement