Github user sun-rui commented on the pull request:
https://github.com/apache/spark/pull/9290#issuecomment-151754033
code looks good.
Note that this works only in SparkR shell mode. This won't work when
executing SparkR scripts, where the JVM launched by spark-submit is the R
backend JVM and is the parent process of Rscript.
Could you update the SparkR documentation to document this support?
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