Github user mateiz commented on a diff in the pull request:
https://github.com/apache/incubator-spark/pull/539#discussion_r10019117
--- Diff: core/src/main/scala/org/apache/spark/api/java/JavaRDDLike.scala
---
@@ -117,19 +118,19 @@ trait JavaRDDLike[T, This <: JavaRDDLike[T, This]]
extends Serializable {
* Return a new RDD by first applying a function to all elements of this
* RDD, and then flattening the results.
*/
- def flatMap[K2, V2](f: PairFlatMapFunction[T, K2, V2]): JavaPairRDD[K2,
V2] = {
+ def flatMapToPair[K2, V2](f: PairFlatMapFunction[T, K2, V2]):
JavaPairRDD[K2, V2] = {
import scala.collection.JavaConverters._
- def fn = (x: T) => f.apply(x).asScala
- val ctag = implicitly[ClassTag[Tuple2[K2, V2]]]
- JavaPairRDD.fromRDD(rdd.flatMap(fn)(ctag))(f.keyType(), f.valueType())
+ def fn = (x: T) => f.call(x).asScala
+ def cm = implicitly[ClassTag[Tuple2[_,
_]]].asInstanceOf[ClassTag[Tuple2[K2, V2]]]
--- End diff --
Ditto here on the ClassTag
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