Github user ankurdave commented on a diff in the pull request:
https://github.com/apache/spark/pull/3303#discussion_r20420549
--- Diff:
graphx/src/main/scala/org/apache/spark/graphx/impl/GraphImpl.scala ---
@@ -336,8 +337,8 @@ object GraphImpl {
*/
def fromExistingRDDs[VD: ClassTag, ED: ClassTag](
vertices: VertexRDD[VD],
- edges: EdgeRDD[ED, VD]): GraphImpl[VD, ED] = {
- new GraphImpl(vertices, new ReplicatedVertexView(edges))
+ edges: EdgeRDD[ED]): GraphImpl[VD, ED] = {
+ new GraphImpl(vertices, new
ReplicatedVertexView(edges.asInstanceOf[EdgeRDDImpl[ED, VD]]))
--- End diff --
Unfortunately, here we have to remove the statically-checked constraint
that the cached vertices in `edges` are of the correct type (`VD`). Preserving
this static constraint would require fromExistingRDDs to take an EdgeRDDImpl,
which would be a breaking change.
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