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https://issues.apache.org/jira/browse/MAPREDUCE-1180?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer updated MAPREDUCE-1180:
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Attachment: samplechart.png
This is a simple example with a cluster that has 20 map slots. It is a
snapshot of when all the slots are being used.
> Detailed histogram of map/reduce slots usage
> --------------------------------------------
>
> Key: MAPREDUCE-1180
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1180
> Project: Hadoop Map/Reduce
> Issue Type: Wish
> Reporter: Allen Wittenauer
> Priority: Minor
> Attachments: samplechart.png
>
>
> People are always looking for ideas of things to implement... so here's one.
> :)
> I'd like an app that I can throw at a JobHistory directory that would show me
> detailed slot usage by job, user, pool, etc, in an area stacked chart format.
> This would be very helpful to determine if a particular job, user, or pool
> is under/over utilizing the capacity, if we need more capacity, what time
> slots have holes, etc. I'll see if I can create an example in Excel of what
> I'm thinking of.
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