Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/10554#discussion_r49032707
--- Diff: core/src/main/scala/org/apache/spark/api/java/JavaRDDLike.scala
---
@@ -448,7 +448,7 @@ trait JavaRDDLike[T, This <: JavaRDDLike[T, This]]
extends Serializable {
* combine step happens locally on the master, equivalent to running a
single reduce task.
*/
def countByValue(): java.util.Map[T, jl.Long] =
- mapAsSerializableJavaMap(rdd.countByValue().map((x => (x._1, new
jl.Long(x._2)))))
+ mapAsSerializableJavaMap(rdd.countByValue().mapValues(jl.Long.valueOf))
--- End diff --
@srowen how come there is still a mapValues here?
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