# Aurora MySQL database engine updates 2019-03-25 (version 2.04.1) (Deprecated)
Aurora MySQL updates: 2019-03-25 (version 2.04.1) (Deprecated)Aurora MySQL version 2.04.1

Aurora MySQL version 2.04.1 is available.

**Version:** 2.04.1

Aurora MySQL 2.04.1 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.

 Currently supported Aurora MySQL releases are 1.19.5, 1.19.6, 1.22.\$1, 1.23.\$1, 2.04.\$1, 2.07.\$1, 2.08.\$1, 2.09.\$1, 2.10.\$1, 3.01.\$1 and 3.02.\$1. 

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.\$1 clusters or restore of Aurora MySQL 1.\$1 clusters from an Amazon S3 backup into Aurora MySQL 2.04.1. We plan to remove these restrictions in a later Aurora MySQL 2.\$1 release.

You can restore snapshots of Aurora MySQL 1.14.\$1, 1.15.\$1, 1.16.\$1, 1.17.\$1, 1.18.\$1, 1.19.\$1, 2.01.\$1, 2.02.\$1, 2.03.\$1, 2.04.0 into Aurora MySQL 2.04.1.

If you have any questions or concerns, AWS Support is available on the community forums and through [AWS Support](https://aws.amazon.com/support). For more information, see [ Maintaining an Amazon Aurora DB cluster](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/USER_UpgradeDBInstance.Maintenance.html) in the *Amazon Aurora User Guide*.

**Note**  
 This version is currently not available in the AWS GovCloud (US-West) [us-gov-west-1] region. There will be a separate announcement once it is made available. 

**Note**  
The procedure to upgrade your DB cluster has changed. For more information, see [ Upgrading the minor version or patch level of an Aurora MySQL DB cluster](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Updates.Patching.html) in the *Amazon Aurora User Guide*.

## Improvements

+  Fixed an issue where an Aurora MySQL 5.6 snapshot for versions lower than 1.16 could not be restored to the latest Aurora MySQL 5.7 cluster. 

## 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).
+ Asynchronous key prefetch (AKP). For more information, see [ Optimizing Aurora indexed join queries with asynchronous key prefetch](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.BestPractices.html#Aurora.BestPractices.AKP) in the *Amazon Aurora User Guide*. 
+ Hash joins. For more information, see [ Optimizing large Aurora MySQL join queries with hash joins](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.BestPractices.html#Aurora.BestPractices.HashJoin) in the *Amazon Aurora User Guide*.
+ Native functions for synchronously invoking AWS Lambda functions. For more information, see [ Invoking a Lambda function with an Aurora MySQL native function](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Integrating.Lambda.html#AuroraMySQL.Integrating.NativeLambda) in the *Amazon Aurora User Guide*.
+ Scan batching. For more information, see [Aurora MySQL database engine updates 2017-12-11 (version 1.16) (Deprecated)](AuroraMySQL.Updates.20171211.md).
+ Migrating data from MySQL using an Amazon S3 bucket. For more information, see [ Migrating data from MySQL by using an Amazon S3 bucket](https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Migrating.ExtMySQL.html#AuroraMySQL.Migrating.ExtMySQL.S3) in the *Amazon Aurora User Guide*.

## MySQL 5.7 compatibility


This Aurora MySQL version 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.

This Aurora MySQL version 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