Github user ankurdave commented on a diff in the pull request:
https://github.com/apache/spark/pull/2815#discussion_r19708925
--- Diff: graphx/src/main/scala/org/apache/spark/graphx/Graph.scala ---
@@ -303,6 +318,12 @@ abstract class Graph[VD: ClassTag, ED: ClassTag]
protected () extends Serializab
* direction is `Either`, `mapFunc` will be run on edges with *either*
vertex in the active set
* . If the direction is `Both`, `mapFunc` will be run on edges with
*both* vertices in the
* active set. The active set must have the same index as the graph's
vertices.
+ * @param mapUsesSrcAttr indicates whether the source vertex attribute
should be included in
+ * the triplet. Setting this to false can improve performance if the
source vertex attribute
+ * is not needed.
+ * @param mapUsesDstAttr indicates whether the destination vertex
attribute should be included in
+ * the triplet. Setting this to false can improve performance if the
destination vertex attribute
+ * is not needed.
--- End diff --
These comments are out of date now that we have tripletFields
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