You can do this using leftJoin, as collectNeighbors [1] does: graph.vertices.leftJoin(graph.inDegrees) { (vid, attr, inDegOpt) => inDegOpt.getOrElse(0) }
[1] https://github.com/apache/spark/blob/master/graphx/src/main/scala/org/apache/spark/graphx/GraphOps.scala#L145 Ankur On Sun, Jan 25, 2015 at 5:52 AM, scharissis <stefano.charis...@gmail.com> wrote: > If a vertex has no in-degree then Spark's GraphOp 'inDegree' does not return > it at all. Instead, it would be very useful to me to be able to have that > vertex returned with an in-degree of zero. > What's the best way to achieve this using the GraphX API? --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org