Thanks (again!) for the quick response. I've got Gremlin to use the existing SparkContext successfully.
I'm trying to test this, however I'm also finding triggering the traversal from Scala difficult. I would have thought the Scala equivalent of the current Groovy example (gremlin> g = graph.traversal().withComputer(SparkGraphComputer)) would be:
val g = graph.traversal().withComputer(classOf[SparkGraphComputer]) println(g.V().count().next())
However JanusGraphBlueprintsGraph is doing an explicit check that only the FulgoraGraphComputer can be used in this way (line 129).
withComputer also has a method signature of Computer (i.e Object not Class), but instantiating a SparkGraphComputer needs a HadoopGraph, not a JanusGraph.
Once I get this up and running ill submit a full code example for others to use in future.
