Amazon Aurora
User Guide for Aurora

Aurora MySQL Database Engine Updates 2019-05-02 (Version 2.04.2)

Version: 2.04.2

Aurora MySQL 2.04.2 is generally available. Aurora MySQL 2.x versions are compatible with MySQL 5.7 and Aurora MySQL 1.x versions are compatible with MySQL 5.6.

When creating a new Aurora MySQL DB cluster (including restoring a snapshot), you have the option of choosing compatibility with either MySQL 5.7 or MySQL 5.6. We do not allow in-place upgrade of Aurora MySQL 1.* clusters or restore of Aurora MySQL 1.* clusters from an Amazon S3 backup into Aurora MySQL 2.04.2. We plan to remove these restrictions in a later Aurora MySQL 2.* release.

You can restore snapshots of Aurora MySQL 1.14.*, 1.15.*, 1.16.*, 1.17.*, 1.18.*, 1.19.*, 2.01.*, 2.02.*, 2.03.*, 2.04.0, and 2.04.1 into Aurora MySQL 2.04.2.

If you have any questions or concerns, AWS Support is available on the community forums and through AWS Premium Support. For more information, see Maintaining an Amazon Aurora DB Cluster.

Note

This version is currently not available in the AWS GovCloud (US-West) [us-gov-west-1] and China (Ningxia) [cn-northwest-1] AWS Regions. There will be a separate announcement once it is made available.

Note

For information on how to upgrade your Aurora MySQL database cluster, see Database Upgrades and Patches for Amazon Aurora MySQL.

Improvements

  • Added support for SSL binlog replication using custom certificates. For information on using SSL binlog replication in Aurora MySQL, see mysql_rds_import_binlog_ssl_material.

  • Fixed a deadlatch on the Aurora primary instance that occurs when a table with a Full Text Search index is being optimized.

  • Fixed an issue on the Aurora Replicas where performance of certain queries using SELECT(*) could be impacted on tables that have secondary indexes.

  • Fixed a condition that resulted in Error 1032 being posted.

  • Improved the stability of Aurora Replicas by fixing multiple deadlatches.

Integration of MySQL Bug Fixes

  • Bug #24829050 - INDEX_MERGE_INTERSECTION OPTIMIZATION CAUSES WRONG QUERY RESULTS

Comparison with Aurora MySQL Version 1

The following Amazon Aurora MySQL features are supported in Aurora MySQL Version 1 (compatible with MySQL 5.6), but these features are currently not supported in Aurora MySQL Version 2 (compatible with MySQL 5.7).

MySQL 5.7 compatibility

Aurora MySQL 2.04.2 is wire-compatible with MySQL 5.7 and includes features such as JSON support, spatial indexes, and generated columns. Aurora MySQL uses a native implementation of spatial indexing using z-order curves to deliver >20x better write performance and >10x better read performance than MySQL 5.7 for spatial datasets.

Aurora MySQL 2.04.2 does not currently support the following MySQL 5.7 features:

  • 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