Github user witgo commented on a diff in the pull request:
https://github.com/apache/spark/pull/44#discussion_r10193837
--- 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 rddPartitions = rdd.partitions.map(_.index)
+ require(partitions.forall(rddPartitions.contains(_)), "partition index
out of range")
--- End diff --
val pairs = sc.parallelize(Array((1, 2), (3, 4), (5, 6), (-1, 7)))
val shuffled = pairs.partitionBy(partitioner)
shuffled.count
Here error, is looking forward to the results.
val pairs = sc.parallelize(Array((1, 2), (3, 4), (5, 6), (6, 7)))
val shuffled = pairs.partitionBy(partitioner)
shuffled.lookup(-1)
Although the log records the error, but Spark to hang
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