release 0.23.1 available

This is the second alpha version of the hadoop-0.23 major release after the first alpha 0.23.0. This release has significant improvements compared to 0.23.0 but should still be considered as alpha-quality and not for production use.

hadoop-0.23.1 contains several major advances from 0.23.0:

Lots of bug fixes and improvements in both HDFS and MapReduce
Major performance work to make this release either match or exceed performance of Hadoop-1 in most aspects of both HDFS and MapReduce.
Several downstream projects like HBase, Pig, Oozie, Hive etc. are better integrated with this release

See the Hadoop 0.23.1 Release Notes for details.

2012 Feb 27

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