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Posted to mapreduce-dev@hadoop.apache.org by "Sandy Ryza (JIRA)" <ji...@apache.org> on 2012/12/05 01:08:59 UTC
[jira] [Created] (MAPREDUCE-4845) ClusterStatus.getMaxMemory() and
getUsedMemory() exist in MR1 but not MR2
Sandy Ryza created MAPREDUCE-4845:
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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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