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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