diff options
| -rw-r--r-- | graphx/src/main/scala/org/apache/spark/graphx/EdgeRDD.scala | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/graphx/src/main/scala/org/apache/spark/graphx/EdgeRDD.scala b/graphx/src/main/scala/org/apache/spark/graphx/EdgeRDD.scala index 5bcb96b136..5267560b3e 100644 --- a/graphx/src/main/scala/org/apache/spark/graphx/EdgeRDD.scala +++ b/graphx/src/main/scala/org/apache/spark/graphx/EdgeRDD.scala @@ -82,12 +82,17 @@ class EdgeRDD[@specialized ED: ClassTag, VD: ClassTag]( this } - /** Persists the vertex partitions using `targetStorageLevel`, which defaults to MEMORY_ONLY. */ + /** Persists the edge partitions using `targetStorageLevel`, which defaults to MEMORY_ONLY. */ override def cache(): this.type = { partitionsRDD.persist(targetStorageLevel) this } + /** The number of edges in the RDD. */ + override def count(): Long = { + partitionsRDD.map(_._2.size.toLong).reduce(_ + _) + } + private[graphx] def mapEdgePartitions[ED2: ClassTag, VD2: ClassTag]( f: (PartitionID, EdgePartition[ED, VD]) => EdgePartition[ED2, VD2]): EdgeRDD[ED2, VD2] = { this.withPartitionsRDD[ED2, VD2](partitionsRDD.mapPartitions({ iter => |