[ http://issues.apache.org/jira/browse/HADOOP-313?page=all ]
Owen O'Malley updated HADOOP-313:
---------------------------------
Summary: A stand alone driver for individual tasks (was: running a
reduce task standalone)
Description:
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
was:
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
> A stand alone driver for individual tasks
> -----------------------------------------
>
> Key: HADOOP-313
> URL: http://issues.apache.org/jira/browse/HADOOP-313
> Project: Hadoop
> Type: Bug
> Reporter: Michel Tourn
> Assignee: Michel Tourn
> Attachments: sareduce.patch, stand-alone-task.patch
>
> 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
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