Amazon Neptune Engine Version (2019-11-22) - Amazon Neptune
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Amazon Neptune Engine Version (2019-11-22)

Subsequent Patch Releases for This Release

New Features in This Engine Release

Improvements in This Engine Release

  • Improved performance when handling a large number of predicates.

  • Enhanced query optimization. While this should be entirely transparent to customers, we encourage you to test your applications before upgrading to ensure that they behave as expected.

  • Minor enhancements to error reporting.

  • Added optimizations for Gremlin .project() and .identity() steps.

  • Added optimizations for non-terminal Gremlin .union() cases.

  • Added native support for Gremlin .path().by() traversals.

  • Added native support for Gremlin .coalesce().

  • Further optimization of bulk write.

  • We now require that HTTPS connections use at least TLS version 1.2 or higher, to prevent outdated/insecure ciphers being used.

Defects Fixed in This Engine Release

  • Fixed a Gremlin addE() inner traversal handling bug.

  • Fixed a Gremlin bug caused by AST annotations leaking from child traversals to the parent.

  • Fixed a bug that occurred in Gremlin when .otherV() was called after select().

  • Fixed a Gremlin bug that caused some .hasLabel() steps to fail if they appeared after a bothE() step.

  • Made minor fixes for Gremlin .sum() and .project().

  • Fixed a bug in processing SPARQL queries that lack a closing brace.

  • Fixed some minor bugs in SPARQL Explain.

  • Fixed a bug in the handling of concurrent get load status requests.

  • Reduced memory used for executing some Gremlin traversals with .project() steps.

  • Fixed numeric comparisons of special values in SPARQL. See Standards Compliance.

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: 3.4.1

  • SPARQL version: 1.1

Upgrade Paths to Engine Release

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

You will not automatically upgrade 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.