Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/3054#discussion_r20124959
--- Diff:
graphx/src/main/scala/org/apache/spark/graphx/impl/EdgePartition.scala ---
@@ -30,54 +31,71 @@ import
org.apache.spark.graphx.util.collection.GraphXPrimitiveKeyOpenHashMap
* @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 localSrcIds the local source vertex id of each edge as an index
into `local2global` and
+ * `vertexAttrs`
+ * @param localDstIds the local destination vertex id of each edge as an
index into `local2global`
+ * and `vertexAttrs`
* @param data the attribute associated with each edge
- * @param index a clustered index on source vertex id
- * @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 index a clustered index on source vertex id as a map from each
global source vertex id to
+ * the offset in the edge arrays where the cluster for that vertex id
begins
+ * @param global2local a map from referenced vertex ids to local ids which
index into vertexAttrs
+ * @param local2global an array of global vertex ids where the offsets are
local vertex ids
+ * @param vertexAttrs an array of vertex attributes where the offsets are
local vertex ids
* @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, VD: ClassTag](
- val srcIds: Array[VertexId] = null,
- val dstIds: Array[VertexId] = null,
+ val localSrcIds: Array[Int] = null,
--- End diff --
also try to make all of these private rather than val's. (just remove the
val)
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