Github user ankurdave commented on a diff in the pull request:
https://github.com/apache/spark/pull/497#discussion_r12453849
--- Diff:
graphx/src/main/scala/org/apache/spark/graphx/impl/EdgePartition.scala ---
@@ -17,39 +17,86 @@
package org.apache.spark.graphx.impl
-import scala.reflect.ClassTag
+import scala.reflect.{classTag, ClassTag}
import org.apache.spark.graphx._
import org.apache.spark.graphx.util.collection.PrimitiveKeyOpenHashMap
/**
- * A collection of edges stored in 3 large columnar arrays (src, dst,
attribute). The arrays are
- * clustered by src.
+ * A collection of edges stored in columnar format, along with any vertex
attributes referenced. The
+ * edges are stored in 3 large columnar arrays (src, dst, attribute). The
arrays are clustered by
+ * src. There is an optional active vertex set for filtering computation
on the edges.
+ *
+ * @tparam ED the edge attribute type
+ * @tparam VD the vertex attribute type
*
* @param srcIds the source vertex id of each edge
* @param dstIds the destination vertex id of each edge
* @param data the attribute associated with each edge
* @param index a clustered index on source vertex id
- * @tparam ED the edge attribute type.
+ * @param vertices a map from referenced vertex ids to their corresponding
attributes. Must
+ * contain all vertex ids from `srcIds` and `dstIds`, though not
necessarily valid attributes for
+ * those vertex ids. The mask is not used.
+ * @param activeSet an optional active vertex set for filtering
computation on the edges
*/
private[graphx]
-class EdgePartition[@specialized(Char, Int, Boolean, Byte, Long, Float,
Double) ED: ClassTag](
+class EdgePartition[
+ @specialized(Char, Int, Boolean, Byte, Long, Float, Double) ED:
ClassTag, VD: ClassTag](
--- End diff --
specialize VD
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