Amazon Neptune Engine Version (2021-09-15) - Amazon Neptune
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Amazon Neptune Engine Version (2021-09-15)

As of 2021-09-15, engine version is being generally deployed. Please note that it takes several days for a new release to become available in every region.

Defects Fixed in This Engine Release

  • Fixed a bug that causes the engine to become unresponsive in either of these situations:

    • A bulk load happens at the same time as automatic statistics computation is taking place.

    • A statistics computation was requested manually at the same time that one was already occurring.

  • Fixed a bug in deadlock detection and in lock acquisition that could cause the engine to crash.

  • Fixed a Gremlin bug where the engine threw an error when it encountered unknown data from a remote ML endpoint in a Gremlin inference query.

  • Fixed several bugs in ML model management APIs related to model transform jobs and instance recommendations.

  • Fixed a bug that could cause the engine to crash when generating node and edge IDs.

  • Fixed a bug that slowed down the generation of query plans for queries with large graph patterns.

  • Fixed an openCypher bug that could cause a query to stall when retrieving a node that had more than 100 properties.

Query-Language Versions Supported in This Release

Before upgrading a DB cluster to version, make sure that your project is compatible with these query-language versions:

  • Gremlin version: 3.4.11

  • SPARQL version: 1.1

Upgrade Paths to Engine Release

Your cluster will be upgraded to this patch release automatically during your next maintenance window if you are running engine version

You can manually upgrade any previous Neptune engine release to this release.

Upgrading to This Release

Amazon Neptune is now generally available.

If a DB cluster is running an engine version from which there is an upgrade path to this release, it is eligible to be upgraded now. You can upgrade any eligible cluster using the DB cluster operations on the console or by using the SDK. The following CLI command will upgrade an eligible cluster immediately:

For Linux, OS X, or Unix:

aws neptune modify-db-cluster \ --db-cluster-identifier (your-neptune-cluster) \ --engine-version \ --apply-immediately

For Windows:

aws neptune modify-db-cluster ^ --db-cluster-identifier (your-neptune-cluster) ^ --engine-version ^ --apply-immediately

Updates are applied to all instances in a DB cluster simultaneously. An update requires a database restart on those instances, so you will experience downtime ranging from 20–30 seconds to several minutes, after which you can resume using the DB cluster.

For more information about upgrading your engine version, see Neptune engine updates. If you have any questions or concerns, the Amazon Support team is available on the community forums and through Amazon Premium Support.