Elasticsearch 1.7.3, based on Lucene 4.10.4, is a stable release that addresses several bugs affecting previous versions and is recommended for users experiencing these issues. Key bug fixes include resolving problems with synced flushes that reduced index buffer sizes, excessive throttling in Snapshot/Restore operations, heavy memory usage due to old cluster states in tribe nodes connected to slow clusters, and indeterminate application of analyzer settings that complicated transitions to version 2.0.0. Additionally, a networking layer bug related to SSL handling has been fixed by upgrading to Netty 3.10.5. Users are encouraged to download the release and provide feedback via Twitter or the forum, with problems reportable on the GitHub issues page.