Apache Hadoop 0.21.1 Release Notes

These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.


Updated the help for the touchz command.


Removed references to the older fs.checkpoint.* properties that resided in core-site.xml


This fix requires that test coverage is running under Clover 3.0+


I have just committed this to 0.21 and trunk. Thanks Vinay.


Removed references to the older fs.checkpoint.* properties that resided in core-site.xml


This fix requires that test coverage is running under Clover 3.0+


This fix requires that test coverage is running under Clover 3.0+


Forrest Documentation for Dynamic Priority Scheduler


Clears a problem that {{TestJobCleanup}} leaves behind files that cause {{TestJobOutputCommitter}} to error out.


Moved the api public Counter getCounter(Enum<?> counterName), public Counter getCounter(String groupName, String counterName) from org.apache.hadoop.mapreduce.TaskInputOutputContext to org.apache.hadoop.mapreduce.TaskAttemptContext