Github user mallman commented on the pull request: https://github.com/apache/spark/pull/10700#issuecomment-172440507 Hi Josh, Good questions. I may have submitted this PR incorrectly. Perhaps you can guide me in the right direction. I submitted this PR for merging into master because my understanding is that's how all PR's for the Spark project should be created. And patches against master may be backported to earlier releases. However, I originally created and tested this patch on branch-1.5 because that's what we're currently running. So while this patch may be irrelevant to master (or Spark 2.0), it's relevant to the Spark 1.5 branch and presumably 1.6 as well. Under these circumstances, should I have submitted a PR against master as I have done? The code contribution guidelines state that only in a special case would a PR be opened against another branch. Does a patch with no or lesser relevance to the master branch compared to an earlier release branch qualify as a "special case"? And if so, which branch should I have submitted the PR against? Thanks.
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