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title: release 0.23.1 available date: 2012-02-27

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.