Github user kevincox commented on the pull request:
https://github.com/apache/spark/pull/10761#issuecomment-172707827
It is similar but it has a number of advantages including that it can be
cleaner (you can wait until after you finish a task and prepare it for
shuffling) and you get more control as it can be configured on a per-job level
without creating massive amounts of yarn queues.
Either way I would argue that this refactor is still warranted because of
the cleaner and more efficient code but am definitely open to a discussion.
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