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Posted to mapreduce-dev@hadoop.apache.org by "Gera Shegalov (JIRA)" <ji...@apache.org> on 2015/01/03 01:36:34 UTC

[jira] [Created] (MAPREDUCE-6209) Implement a heuristic to auto-size Java heap of MRAppMaster container

Gera Shegalov created MAPREDUCE-6209:
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             Summary: Implement a heuristic to auto-size Java heap of MRAppMaster container
                 Key: MAPREDUCE-6209
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6209
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: applicationmaster
            Reporter: Gera Shegalov


The size of Java heap required by the AM is linearly proportional to the size of the MR job (number of mappers/splits and reducers). it would be nice if users did not have to adjust the AM container size when transitioning from testing job on a small sample to a production job on a full-scale dataset. 



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