Releases may be downloaded from Apache mirrors: Download
Older releases are available in the Apache archive: Older Releases
Release notes for Apache BookKeeper releases are available in Jira: Browse release notes
This is the fourth release of BookKeeper as an Apache Top Level Project!
This release contains a total of 94 Jira tickets fixed and brings several bookie
reliability and operability improvements, along with a long list of bugfixes.
See BookKeeper 4.4.0 Release Notes for details.
This is the third release of BookKeeper as an Apache Top Level Project!
This release fixes some issues in both bookie server and bookkeeper client.
See BookKeeper 4.3.2 Release Notes for details.
This is the second release of BookKeeper as an Apache Top Level Project!
This release fixes some issues in both bookie server and bookkeeper client.
See BookKeeper 4.3.1 Release Notes for details.
This is the first release of BookKeeper as an Apache Top Level Project!
This release fixes some critical issues in fencing when the ack quorum and write quorum are different sizes.
See BookKeeper 4.2.4 Release Notes for details.
This is the seventh release of BookKeeper as a subproject of Zookeeper.
This release includes a lot of improvements to the bookie on-disk performance, a new statistics framework, and protobuffer protocol support along with numerous bugfixes.
See BookKeeper 4.3.0 Release Notes for details.
This is the sixth release of BookKeeper as a subproject of Zookeeper.
This is a bugfix release for 4.2.2.
Notable fixes and improvements include new utilities to give administrators better visibility of cluster state (BOOKKEEPER-746), improvements to allow for smoother rolling upgrades (BOOKKEEPER-745), fixes to ledger polling to ensure metadata updates aren't missed (BOOKKEEPER-710 & BOOKKEEPER-747) and shading of protobuf libraries to avoid conflicts when included with other version (BOOKKEEPER-708).
See BookKeeper 4.2.3 Release Notes for details.
This is the fifth release of BookKeeper as a subproject of Zookeeper.
This is a bugfix release for 4.2.1. There are some minor API improvements. Notably, it is now possible to check whether a ledger is closed without opening it, and it is now possible to get a list of ledgers available in the cluster.
See BookKeeper 4.2.2 Release Notes for details.
This is the fourth release of BookKeeper as a 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.
See BookKeeper 4.2.1 Release Notes for details.
This is the third release of BookKeeper as a subproject of Zookeeper.
See BookKeeper 4.2.0 Release Notes for details.
This is the second release of BookKeeper as a subproject of Zookeeper.
See BookKeeper 4.1.0 Release Notes for details.
This is the first release of BookKeeper as a subproject of Zookeeper.
See BookKeeper 4.0.0 Release Notes for details.
