Github user sryza commented on the pull request:
https://github.com/apache/spark/pull/586#issuecomment-41645734
Uploaded a patch that follows your comments. I tested it against YARN and
verified that the opts and environment variables both show up.
Right now when I try running spark-shell with your Java opt string, I get a
java.lang.NoClassDefFoundError: App". It seems like spark-class isn't able to
handle it, which is at least reassuring that we're not breaking previous
behavior. I haven't tried yet to think more generally about whether there are
strings that would work for spark-class but not work with the Spark YARN code.
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