src/release/2.0.3-alpha.md

title: Release 2.0.3-alpha available date: 2013-02-14

This is the latest (alpha) version in the hadoop-2.x series.

This release delivers significant major features and stability over previous releases in hadoop-2.x series:

QJM for HDFS HA for NameNode
Multi-resource scheduling (CPU and memory) for YARN
YARN ResourceManager Restart
Significant stability at scale for YARN (over 30,000 nodes and 14 million applications so far, at time of release)

This release, like previous releases in hadoop-2.x series is still considered alpha primarily since some of APIs aren't fully-baked and we expect some churn in future. Furthermore, please note that there are some API changes from previous hadoop-2.0.2-alpha release and applications will need to recompile against hadoop-2.0.3-alpha.

Please see the Hadoop 2.0.3-alpha Release Notes for details.