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https://issues.apache.org/jira/browse/MAPREDUCE-1295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12798372#action_12798372
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Hudson commented on MAPREDUCE-1295:
-----------------------------------
Integrated in Hadoop-Mapreduce-trunk #200 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-Mapreduce-trunk/200/])
> We need a job trace manipulator to build gridmix runs.
> ------------------------------------------------------
>
> Key: MAPREDUCE-1295
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1295
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Dick King
> Assignee: Dick King
> Fix For: 0.22.0
>
> Attachments: mapreduce-1295--2009-12-17.patch,
> mapreduce-1295--2009-12-21.patch, mapreduce-1295--2009-12-22.patch,
> mapreduce-1295--2009-12-23.patch, mapreduce-1297--2009-12-14.patch
>
>
> Rumen produces "job traces", which are JSON format files describing important
> aspects of all jobs that are run [successfully or not] on a hadoop map/reduce
> cluster. There are two packages under development that will consume these
> trace files and produce actions in that cluster or another cluster: gridmix3
> [see jira MAPREDUCE-1124 ] and Mumak [a simulator -- see MAPREDUCE-728 ].
> It would be useful to be able to do two things with job traces, so we can run
> experiments using these two tools: change the duration, and change the
> density. I would like to provide a "folder", a tool that can wrap a
> long-duration execution trace to redistribute its jobs over a shorter
> interval, and also change the density by duplicating or culling away jobs
> from the folded combined job trace.
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