Apache ZooKeeper release 3.4.4 is now available. This is a bug fix release including 50 bug fixes. Following is a summary of the critical issues fixed in the release.
ZOOKEEPER-1419 Leader Election never settles for a 5 node cluster
ZOOKEEPER-1489 Data loss after truncate on transaction log
ZOOKEEPER-1412 java client watches inconsistently triggered on reconnect
ZOOKEEPER-1344 ZooKeeper client multi-update command is not considering the
ZOOKEEPER-1496 Ephemeral node not getting cleared even after client has exited
ZOOKEEPER-1437 Client uses session before SASL authentication complete
Stability of 3.4.4
As you might have noticed we have been marking all the previous 3.4.* releases as Alpha and beta. After having a couple of releases out (3.4.0, 3.4.1, 3.4.2, 3.4.3), we in the ZooKeeper community have decided to upgrade 3.4.4 as a stable release.
Thanks to everyone who contributed towards the release including our users who reported the bugs in 3.4.4.