The Apache Software Foundation

The Apache ZooKeeper team is proud to announce Apache ZooKeeper version 3.2.0.

ZooKeeper is a high-performance coordination service for distributed applications. It exposes common services - such as naming, configuration management, synchronization, and group services - in a simple interface so you don't have to write them from scratch. You can use it off-the-shelf to implement consensus, group management, leader election, and presence protocols. And you can build on it for your own, specific needs.

Key features of the 3.2.0 release:
* client side bindings for; Perl, Python, & REST
* flexible quorum support
* re-usable recipe code libraries
* chroot support in connect string
* many fixes, improvements, improved documentation, etc...

A number of optimizations have gone into this release and our benchmarks show that read/write performance of version 3.2.0 is approximately twice that of the previous 3.1.0 version!

For ZooKeeper release details and downloads, visit:
http://hadoop.apache.org/zookeeper/releases.html

ZooKeeper 3.2.0 Release Notes are at:
http://hadoop.apache.org/zookeeper/docs/r3.2.0/releasenotes.html

Regards,

The ZooKeeper Team

The Apache ZooKeeper team is proud to announce Apache ZooKeeper version 3.1.1.

ZooKeeper is a high-performance coordination service for distributed applications. It exposes common services - such as naming, configuration management, synchronization, and group services - in a simple interface so you don't have to write them from scratch. You can use it off-the-shelf to implement consensus, group management, leader election, and presence protocols. And you can build on it for your own, specific needs.

If you are upgrading from version 2.2.1 on SourceForge be sure to review the 3.0.1 release notes for migration instructions.

For ZooKeeper release details and downloads, visit:
http://hadoop.apache.org/zookeeper/releases.html

ZooKeeper 3.1.1 Release Notes are at:
http://hadoop.apache.org/zookeeper/docs/r3.1.1/releasenotes.html

Regards,

The ZooKeeper Team

The Apache ZooKeeper team is proud to announce Apache ZooKeeper version 3.1.0.

ZooKeeper is a high-performance coordination service for distributed applications. It exposes common services - such as naming, configuration management, synchronization, and group services - in a simple interface so you don't have to write them from scratch. You can use it off-the-shelf to implement consensus, group management, leader election, and presence protocols. And you can build on it for your own, specific needs.

 

A bit about BookKeeper: a system to reliably log streams of records. In BookKeeper, servers are "bookies", log streams are "ledgers", and each unit of a log (aka record) is a "ledger entry". BookKeeper is designed to be reliable; bookies, the servers that store ledgers can be byzantine, which means that some subset of the bookies can fail, corrupt data, discard data, but as long as there are enough correctly behaving servers the service as a whole behaves correctly; the meta data for BookKeeper is stored in ZooKeeper.

For ZooKeeper release details and downloads, visit:
http://hadoop.apache.org/zookeeper/releases.html

ZooKeeper 3.1.0 Release Notes are at:
http://hadoop.apache.org/zookeeper/docs/r3.1.0/releasenotes.html

Regards,

The ZooKeeper Team