Apache ZooKeeper 3.3.6 has been released

Apache ZooKeeper release 3.3.6 is now available. This is a bug fix release covering 16 issues, two of which were considered blockers. Some of the more serious issues include:

  • ZOOKEEPER-1489 Data loss after truncate on transaction log
  • ZOOKEEPER-1466 QuorumCnxManager.shutdown missing synchronization
  • ZOOKEEPER-1395 node-watcher double-free redux
  • ZOOKEEPER-1521 LearnerHandler initLimit/syncLimit problems specifying follower socket timeout limits
  • ZOOKEEPER-1431 zkpython: async calls leak memory
  • ZOOKEEPER-1318 In Python binding, get_children (and get and exists, and probably others) with expired session doesn’t raise exception properly

Stability, Compatibility and Testing

3.3.6 is a stable release that’s fully backward compatible with 3.3.5. Only bug fixes relative to 3.3.5 have been applied.

Getting Involved

The Apache ZooKeeper project is working on a number of new features. Our How To Contribute page is a great place to start if you’re interested in getting involved as a developer. You can also follow me on twitter.

Acknowledgements

A special thanks to everyone who contributed to the release (reporting issues, fixing bugs, reviewing changes, writing documentation, etc).

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