Affects Version/s: None
Fix Version/s: 0.5.0
This is a tool to reproduce problems and to run unit tests involving either a map or reduce task.
You just give it a reduce directory on the command line.
Usage: java org.apache.hadoop.mapred.StandaloneReduceTask <taskdir> [<limitmaps>]
taskdir name encodes: task_<jobid>r<partition>_<attempt>
taskdir contains job.xml and one or more input files named: map_<dddd>.out
You should run with the same -Xmx option as the TaskTracker child JVM