Github user shivaram commented on the issue:
    @falaki Thats an interesting approach to try -- the other thing to try 
might be to use a separate connection to send back results. i.e. as soon as JVM 
gets the request it returns `OK` or some such status and then whenever the 
result is ready the JVM pushes data on the reader socket that is created in R. 
We might need to try a couple of options here to see which looks best.
    BTW the monitorConn is used - its used in cases where the JVM comes up 
first, say in YARN / spark-submit and the JVM uses that to detect if the R 
process has crashed. 

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