Github user gczsjdy commented on a diff in the pull request: https://github.com/apache/spark/pull/19763#discussion_r152021708 --- Diff: core/src/main/scala/org/apache/spark/MapOutputTracker.scala --- @@ -472,16 +475,45 @@ private[spark] class MapOutputTrackerMaster( shuffleStatuses.get(shuffleId).map(_.findMissingPartitions()) } + /** + * Try to equally divide Range(0, num) to divisor slices + */ + def equallyDivide(num: Int, divisor: Int): Iterator[Seq[Int]] = { + assert(divisor > 0, "Divisor should be positive") + val (each, remain) = (num / divisor, num % divisor) + val (smaller, bigger) = (0 until num).splitAt((divisor-remain) * each) --- End diff -- Sure : )
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