Reynold Xin created SPARK-2959:
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             Summary: Use a single FileClient and Netty client thread pool
                 Key: SPARK-2959
                 URL: https://issues.apache.org/jira/browse/SPARK-2959
             Project: Spark
          Issue Type: Improvement
            Reporter: Reynold Xin


The current implementation creates a new Netty bootstrap for fetching each 
block. This is pretty crazy! 

We should reuse the bootstrap FileClient.




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