Github user witgo commented on a diff in the pull request:
https://github.com/apache/spark/pull/44#discussion_r10370902
--- 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) {
+ val outIndex = partitions.toSet.diff(rdd.partitions.map(_.index).toSet)
--- End diff --
In other words, all RDDs (including custom RDD ) have continuous index
space. This condition is mandatory (now not verified).
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