In addition to new features, this release contains significant
performance and reliability improvements. For example, MapReduce sort
performance on large clusters has doubled.
Note: when upgrading an existing HDFS filesystem to this release, you
should first start HDFS with 'bin/start-dfs.sh -upgrade'. For more
information on this issue, see:
https://issues.apache.org/jira/browse/HADOOP-702
For full details, see the release notes at:
http://tinyurl.com/2prl3k.
The release can be obtained from:
http://www.apache.org/dyn/closer.cgi/lucene/hadoop/
Doug
