Andrew Or created SPARK-10983:
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             Summary: Implement unified memory manager
                 Key: SPARK-10983
                 URL: https://issues.apache.org/jira/browse/SPARK-10983
             Project: Spark
          Issue Type: Sub-task
          Components: Spark Core
            Reporter: Andrew Or
            Priority: Critical


This builds on top of the MemoryManager interface introduced in SPARK-10956. 
That issue implemented a StaticMemoryManager which implemented legacy behavior. 
This issue is concerned with implementing a UnifiedMemoryManager (or whatever 
we call it) according to the design doc posted in SPARK-10000.

Note: the scope of this issue is limited to implementing this new mode without 
significant refactoring. If necessary, any such refactoring should come later 
(or earlier) in a separate issue.



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