Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5056#discussion_r26815339
--- Diff: graphx/src/main/scala/org/apache/spark/graphx/VertexRDD.scala ---
@@ -128,7 +128,7 @@ abstract class VertexRDD[VD](
*
* @param other the other RDD[(VertexId, VD)] with which to diff against.
*/
- def diff(other: RDD[(VertexId, VD)]): VertexRDD[VD]
+ def diff(other: RDD[(VertexId, VD)]): VertexRDD[VD] = ???
--- End diff --
So what's the correct fix? Adding an exception is not, for the reason I
already mentioned (breaks existing source code that worked with previous
version).
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