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From "Sandy Ryza (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4845) ClusterStatus.getMaxMemory() and getUsedMemory() exist in MR1 but not MR2
Date Wed, 05 Dec 2012 00:08:59 GMT
Sandy Ryza created MAPREDUCE-4845:
-------------------------------------

             Summary: ClusterStatus.getMaxMemory() and getUsedMemory() exist in MR1 but not
MR2 
                 Key: MAPREDUCE-4845
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4845
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
            Reporter: Sandy Ryza
            Assignee: Sandy Ryza


For backwards compatibility, these methods should exist in both MR1 and MR2.

Confusingly, these methods return the max memory and used memory of the jobtracker, not the
entire cluster.

I'd propose to add them to MR2 and return -1, and deprecate them in both MR1 and MR2.  Alternatively,
I could add plumbing to get the resource manager memory stats.

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