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[SPARK-9109] [GraphX] Keep the cached edge in the graph #7469

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[SPARK-9109] [GraphX] Keep the cached edge in the graph #7469

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9 changes: 7 additions & 2 deletions graphx/src/main/scala/org/apache/spark/graphx/impl/GraphImpl.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -332,9 +332,9 @@ object GraphImpl {
edgeStorageLevel: StorageLevel,
vertexStorageLevel: StorageLevel): GraphImpl[VD, ED] = {
val edgeRDD = EdgeRDD.fromEdges(edges)(classTag[ED], classTag[VD])
.withTargetStorageLevel(edgeStorageLevel).cache()
.withTargetStorageLevel(edgeStorageLevel)
val vertexRDD = VertexRDD(vertices, edgeRDD, defaultVertexAttr)
.withTargetStorageLevel(vertexStorageLevel).cache()
.withTargetStorageLevel(vertexStorageLevel)
GraphImpl(vertexRDD, edgeRDD)
}

Expand All @@ -346,9 +346,14 @@ object GraphImpl {
def apply[VD: ClassTag, ED: ClassTag](
vertices: VertexRDD[VD],
edges: EdgeRDD[ED]): GraphImpl[VD, ED] = {

vertices.cache()

// Convert the vertex partitions in edges to the correct type
val newEdges = edges.asInstanceOf[EdgeRDDImpl[ED, _]]
.mapEdgePartitions((pid, part) => part.withoutVertexAttributes[VD])
.cache()

GraphImpl.fromExistingRDDs(vertices, newEdges)
}

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