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From "Hong Tang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1594) Support for Sleep Jobs in gridmix
Date Fri, 12 Mar 2010 07:21:27 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12844395#action_12844395
] 

Hong Tang commented on MAPREDUCE-1594:
--------------------------------------

The main motivation of this extension is to allow us to stress the JT heartbeat handling logic
by emulating production size cluster (at least 4K nodes) with an order of magnitude reduction
of testing cluster size (several hundred nodes) by running multiple tasktrackers per node.
To avoid overwhelming individual nodes, each task would simply sleep for the duration as recorded
in the job trace.

> Support for Sleep Jobs in gridmix
> ---------------------------------
>
>                 Key: MAPREDUCE-1594
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1594
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: contrib/gridmix
>            Reporter: rahul k singh
>
> Support for Sleep jobs in gridmix

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