Aurora MySQL database engine updates 2026-03-30 (version 3.10.4, compatible with MySQL 8.0.42) - Amazon Aurora
ImprovementsIntegration of MySQL Community Edition bug fixes

Aurora MySQL database engine updates 2026-03-30 (version 3.10.4, compatible with MySQL 8.0.42)

Version: 3.10.4

Aurora MySQL 3.10.4 is generally available. Aurora MySQL 3.10 versions are compatible with MySQL 8.0.42. For more information on the community changes that have occurred, see MySQL 8.0 Release Notes.

For details of the new features in Aurora MySQL version 3, see Aurora MySQL version 3 compatible with MySQL 8.0. For differences between Aurora MySQL version 3 and Aurora MySQL version 2, see Comparison of Aurora MySQL version 2 and Aurora MySQL version 3. For a comparison of Aurora MySQL version 3 and MySQL 8.0 Community Edition, see Comparison of Aurora MySQL version 3 and MySQL 8.0 Community Edition in the Amazon Aurora User Guide.

You can perform an in-place upgrade leveraging Zero Downtime Patching (ZDP), restore a snapshot, or initiate a managed blue/green upgrade using Amazon RDS Blue/Green Deployments from any currently supported Aurora MySQL version 2 cluster into an Aurora MySQL version 3.10.4 cluster.

For information on planning an upgrade to Aurora MySQL version 3, see Planning a major version upgrade for an Aurora MySQL cluster. For general information about Aurora MySQL upgrades, see Upgrading Aurora MySQL DB clusters in the Amazon Aurora User Guide.

For troubleshooting information, see Troubleshooting for Aurora MySQL in-place upgrade in the Amazon Aurora User Guide.

If you have any questions or concerns, Support is available on the community forums and through Support. For more information, see Maintaining an Aurora DB cluster in the Amazon Aurora User Guide.

Improvements

General improvements:

  • Fixed an issue where the first Zero-downtime restart (ZDR) after enabling Global Write Forwarding could fail to preserve existing connections on the writer.

Availability improvements:

  • Fixed an issue which can cause a database instance restart when the lock table is full during semi-consistent read.

  • Fixed an issue in binlog recovery that could cause binlog replica instance to restart when using `aurora_in_memory_relaylog` with multi-threaded replication.

  • Fixed an issue which could cause the writer to restart when a reader restarts while local or global write forwarding is enabled.

  • Fixed an issue with improper handling of empty responses during connection loss with storage nodes.

Integration of MySQL Community Edition bug fixes

This release includes all community bug fixes up to and including 8.0.42. For more information, see MySQL bugs fixed by Aurora MySQL 3.x database engine updates.

  • InnoDB: Fixed an issue relating to DELETE operations. (Bug #37478594)