Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/612#issuecomment-42119736
I merged this. I also opened up a new JIRA to just allow us to launch
multiple executors for a given app on the same node:
https://issues.apache.org/jira/browse/SPARK-1706
That will provide a better general solution for users wanting to do this.
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