The Apache BookKeeper team is proud to announce Apache BookKeeper
version 4.2.1

This is the fourth release of the Apache BookKeeper subproject of
ZooKeeper.

This release fixes a major performance bug in release 4.2.0. All users
of BookKeeper 4.2.0 should upgrade immediately.

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

BookKeeper 4.2.1 Release Notes are at:
http://zookeeper.apache.org/bookkeeper/docs/r4.2.1/releaseNotes.html

We would like to thank the contributors that made the release
possible.

Regards,

The BookKeeper Team