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From "Yoram Arnon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-55) map-reduce job overhead is too high
Date Sat, 14 Oct 2006 02:10:19 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-55?page=comments#action_12442130 ] 
            
Yoram Arnon commented on HADOOP-55:
-----------------------------------


   [[ Old comment, sent by email on Wed, 31 May 2006 10:02:17 -0700 ]]

This may actually turn out to be high-ish prioority 



> map-reduce job overhead is too high
> -----------------------------------
>
>                 Key: HADOOP-55
>                 URL: http://issues.apache.org/jira/browse/HADOOP-55
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.2.0
>            Reporter: Yoram Arnon
>         Assigned To: Sameer Paranjpye
>            Priority: Minor
>
> map-reduce job overhead is too high. Running a null map-reduce job, with no input, no
intermediate data and no output, on a several-hundred node cluster, takes several minutes,
rather than several seconds.
> Enhanced distribution, launching and monitoring mechanisms should reduce the overhead
to levels that match human online patience for short jobs.

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