Sandy Ryza created SPARK-2625:
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             Summary: Fix ShuffleReadMetrics for NettyBlockFetcherIterator
                 Key: SPARK-2625
                 URL: https://issues.apache.org/jira/browse/SPARK-2625
             Project: Spark
          Issue Type: Improvement
          Components: Shuffle
    Affects Versions: 1.0.0
            Reporter: Sandy Ryza
            Priority: Minor


NettyBlockFetcherIterator doesn't report fetchWaitTime and has some race 
conditions where multiple threads can be incrementing bytes read at the same 
time.



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