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https://issues.apache.org/jira/browse/SPARK-14542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-14542.
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Resolution: Fixed
Fix Version/s: 2.0.0
Issue resolved by pull request 12309
[https://github.com/apache/spark/pull/12309]
> 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
> Fix For: 2.0.0
>
>
> 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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