Github user CodingCat commented on a diff in the pull request:
https://github.com/apache/spark/pull/44#discussion_r10283513
--- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala ---
@@ -847,6 +847,8 @@ class SparkContext(
partitions: Seq[Int],
allowLocal: Boolean,
resultHandler: (Int, U) => Unit) {
+
require(partitions.toSet.diff(rdd.partitions.map(_.index).toSet).isEmpty,
--- End diff --
....still want to ask, why we have to do diff here, instead of just
partitions.forall(rdd.partitions.map(_.index).contains), since we can ensure
that the index space in RDD (at least for now) is always continuous.....
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