The Apache BookKeeper team is proud to announce Apache BookKeeper version 4.2.0.
This is the third release of the Apache BookKeeper subproject of ZooKeeper. The BookKeeper project is made up of a distributed logging service called BookKeeper and a distributed publish/subscribe system build on top of BookKeeper called Hedwig. For BookKeeper release details and downloads, visit: http://zookeeper.apache.org/bookkeeper/releases.html This release features a new autorecovery mechanism for BookKeeper ledgers, read-only bookie mode, improved scalability for Hedwig, message filtering in Hedwig and much more. For a full list of improvements and bugfixes, see the 4.2.0 release notes: http://zookeeper.apache.org/bookkeeper/docs/r4.2.0/releaseNotes.html We would like to thank the contributors that made the release possible. Regards, The BookKeeper Team