Elasticsearch for Apache Hadoop versions 2.3.0 and 2.2.1 have been released, featuring compatibility improvements and bug fixes that encourage users to upgrade promptly. These releases include important updates such as HDFS repository compatibility with Elasticsearch 2.3.0, marking the last release cycle with the HDFS plugin in ES-Hadoop 2.3. Additionally, network transfer for fixed routing is optimized to target specific shards, indexing of Spark RDDs is improved to prevent unnecessary loading, and the detection algorithm for overlapping shards has been enhanced to use less memory, allowing it to handle more indices. ES-Hadoop 2.2.1 is the final maintenance release of the 2.2.x line, incorporating backported fixes for users on a conservative upgrade path, with strong recommendations for upgrading to ES-Hadoop 2.3 even for those using ES 1.x. Feedback is encouraged through various platforms including GitHub, Twitter, forums, and IRC.