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From "Yoram Arnon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-476) Streaming should check for correctness of the task
Date Thu, 07 Dec 2006 22:49:25 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-476?page=comments#action_12456622 ] 
            
Yoram Arnon commented on HADOOP-476:
------------------------------------

does the patch address the case where the mapper or reducer are not shipped as part of the
command?
arguments to -file should be verified locally, but arguments to -reducer and -mapper should
be verified against the cluster nodes, unless listed under -file.


> Streaming should check for correctness of the task
> --------------------------------------------------
>
>                 Key: HADOOP-476
>                 URL: http://issues.apache.org/jira/browse/HADOOP-476
>             Project: Hadoop
>          Issue Type: Bug
>          Components: contrib/streaming
>            Reporter: arkady borkovsky
>         Assigned To: Sanjay Dahiya
>         Attachments: Hadoop-476.patch
>
>
> Currently, if anythin is wrong with streaming job, it dies without any explanation.
> Before creating and running actual MapReduce job, Streaming should check if:
> -- the executables (or scripts) for -mapper and -reducer are available and have right
permissions
> -- the input fragments exist

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