Github user andrewor14 commented on the pull request: https://github.com/apache/spark/pull/552#issuecomment-42252475 @ScrapCodes I left a bunch of small comments. In general, we want to keep the usage around, but update it to exclude any mention of `<master>` or `<spark_master>`. Also, in a few places you removed the check for `args.length`, and directly access `args(n)` for some value of `n`. This will cause IndexOutOfBoundsException, which we try to avoid. Can you fix these?
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