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Posted to mapreduce-dev@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2009/11/03 19:37:32 UTC

[jira] Created: (MAPREDUCE-1180) Detailed histogram of map/reduce slots usage

Detailed histogram of map/reduce slots usage
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                 Key: MAPREDUCE-1180
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1180
             Project: Hadoop Map/Reduce
          Issue Type: Wish
            Reporter: Allen Wittenauer
            Priority: Minor


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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