I have created a candidate build for Hadoop 0.21.0. This fixes over one thousand issues in Common, HDFS, and MapReduce since 0.20.2.
This release is being classified as a minor release, which means that it is API compatible with 0.20.2. *** This release candidate has not been tested extensively, so it should not be considered stable. *** Please download, test and vote before the vote closes on Thursday 8 July. http://people.apache.org/~tomwhite/hadoop-0.21.0-candidate-0/ The hadoop-0.21.0.tar.gz file is an old-style combined release which includes Common, HDFS, and MapReduce. Thanks, Tom P.S. I have not yet pushed the JARs to Apache's Maven Staging Repository (see HADOOP-6847), but this shouldn't prevent testing and voting while it is sorted out.