Nishkam Ravi created YARN-2041:
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             Summary: Hard to co-locate MR2 and Spark jobs on the same cluster 
in YARN
                 Key: YARN-2041
                 URL: https://issues.apache.org/jira/browse/YARN-2041
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: nodemanager
    Affects Versions: 2.3.0
            Reporter: Nishkam Ravi
             Fix For: 2.4.0, 2.3.0


Performance of MR2 jobs falls drastically as YARN config parameter 
yarn.nodemanager.resource.memory-mb  is increased beyond a certain value. 

Performance of Spark falls drastically as the value of 
yarn.nodemanager.resource.memory-mb is decreased beyond a certain value for a 
large data set.

This makes it hard to co-locate MR2 and Spark jobs in YARN.

The experiments are being conducted on a 6-node cluster. The following 
workloads are being run: TeraGen, TeraSort, TeraValidate, WordCount, 
ShuffleText and PageRank.

Will add more details to this JIRA over time.




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