neoremind created SPARK-21701:

             Summary: Add TCP send/rcv buffer size support for RPC client
                 Key: SPARK-21701
             Project: Spark
          Issue Type: Improvement
          Components: Spark Core
    Affects Versions: 1.6.0
            Reporter: neoremind
            Priority: Trivial

For TransportClientFactory class, there are no params derived from SparkConf to 
set ChannelOption.SO_RCVBUF and ChannelOption.SO_SNDBUF for netty. Increasing 
the receive buffer size can increase the I/O performance for high-volume 

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