Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/44#discussion_r10283043
--- 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 --
it might be nice sense to display the diff in the error message so that
it's more clear to the caller what failed.
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