Releases Archive

Release 2.2.0 available

2013 Oct 15

Apache Hadoop 2.2.0 is the GA release of Apache Hadoop 2.x.

Users are encouraged to immediately move to 2.2.0 since this release is significantly more stable and is guaranteed to remain compatible in terms of both APIs and protocols.

To recap, this release has a number of significant highlights compared to Hadoop 1.x:

YARN - A general purpose resource management system for Hadoop to allow MapReduce and other other data processing frameworks and services
High Availability for HDFS
HDFS Federation
HDFS Snapshots
NFSv3 access to data in HDFS
Support for running Hadoop on Microsoft Windows
Binary Compatibility for MapReduce applications built on hadoop-1.x
Substantial amount of integration testing with rest of projects in the ecosystem

A couple of important points to note while upgrading to hadoop-2.2.0:

HDFS - The HDFS community decided to push the symlinks feature out to a future 2.3.0 release and is currently disabled.
YARN/MapReduce - Users need to change ShuffleHandler service name from mapreduce.shuffle to mapreduce_shuffle.

Please see the Hadoop 2.2.0 Release Notes for details.

Release 2.1.1-beta available

2013 Sep 23

Apache Hadoop 2.1.1-beta is a bug-fix version of the beta release of Apache Hadoop 2.x.

Please see the Hadoop 2.1.1-beta Release Notes for details.

Release 2.1.0-beta available

2013 Aug 25

Apache Hadoop 2.1.0-beta is the beta release of Apache Hadoop 2.x.

Users are encouraged to immediately move to 2.1.0-beta since this release is significantly more stable and has completley whetted set of APIs and wire-protocols for future compatibility.

In addition, this release has a number of other significant highlights:

HDFS Snapshots
Support for running Hadoop on Microsoft Windows
YARN API stabilization
Binary Compatibility for MapReduce applications built on hadoop-1.x
Substantial amount of integration testing with rest of projects in the ecosystem

Please see the Hadoop 2.1.0-beta Release Notes for details.