running a reduce task standalone
--------------------------------
Key: HADOOP-313
URL: http://issues.apache.org/jira/browse/HADOOP-313
Project: Hadoop
Type: Bug
Reporter: Michel Tourn
Attachments: sareduce.patch
This is a tool to reproduce problems and to run unit tests involving a 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
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