The Apache BookKeeper team is proud to announce Apache BookKeeper
This is the fourth release of the Apache BookKeeper subproject of
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
BookKeeper and a distributed publish/subscribe system build on top of
BookKeeper called Hedwig.
For BookKeeper release details and downloads, visit:
BookKeeper 4.2.1 Release Notes are at:
We would like to thank the contributors that made the release
The BookKeeper Team