Github user cleaton commented on the pull request: https://github.com/apache/spark/pull/3868#issuecomment-68657548 @JoshRosen Thank you for all the comments. I will update accordingly :). Regarding the waitUntilDone function, yes I assume there must be something like this in Scala library already but I couldn't find it. Using ScalaTest's eventually seems to create a weird dependency. Any suggestions? Thanks.
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