[jira] [Created] (SPARK-14542) PipeRDD should allow configurable buffer size for the stdin writer

["Sital Kedia (JIRA)" <ji...@apache.org>]

Sital Kedia created SPARK-14542:
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             Summary: PipeRDD should allow configurable buffer size for the stdin writer 
                 Key: SPARK-14542
                 URL: https://issues.apache.org/jira/browse/SPARK-14542
             Project: Spark
          Issue Type: Improvement
    Affects Versions: 1.6.1
            Reporter: Sital Kedia
            Priority: Minor


Currently PipedRDD internally uses PrintWriter to write data to the stdin of the piped process, which by default uses a BufferedWriter of buffer size 8k. In our experiment, we have seen that 8k buffer size is too small and the job spends significant amount of CPU time in system calls to copy the data. We should have a way to configure the buffer size for the writer. 



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