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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-1679) capacity scheduler's user-limit documentation is not helpful
Date Tue, 06 Apr 2010 23:44:33 GMT
capacity scheduler's user-limit documentation is not helpful
------------------------------------------------------------

                 Key: MAPREDUCE-1679
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1679
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: contrib/capacity-sched
    Affects Versions: 0.20.2, 0.21.0, 0.22.0
            Reporter: Allen Wittenauer
            Priority: Trivial


The example given for the user limit tunable doesn't actually show how that value comes into
play.  With 4 users, the Max() is 25 for both the user limit and the capacity limit (from
my reading of the source).  Either pushing the example to 5 users or raising the user limit
to something higher than 25 would help a great deal.  Also, presenting this info in tabular
format showing how the max() value is in play would also be great.

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