Today we are pleased to announce the bug fix release of Elasticsearch 2.3.1 based on Lucene 5.5.0. This new release is already available on Elastic Cloud, our Elasticsearch-as-a-service platform.
This release fixes a thread deadlock in Shield which can prevent nodes from joining the cluster. All users of Elasticsearch 2.3.0 with Shield are advised to upgrade.
Latest stable release:
Please download Elasticsearch 2.3.1, try it out, and let us know what you think on Twitter (@elastic) or in our forum. You can report any problems on the GitHub issues page.