Aaron Davidson created SPARK-4189:
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             Summary: FileSegmentManagedBuffer should have a configurable 
memory map threshold
                 Key: SPARK-4189
                 URL: https://issues.apache.org/jira/browse/SPARK-4189
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
    Affects Versions: 1.2.0
            Reporter: Aaron Davidson


One size does not fit all, it would be useful if there was a configuration to 
change the threshold at which we memory map shuffle files.



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