public FaunusPipeline V ( ) { this . state . assertNotLocked ( ) ; this . state . assertNoProperty ( ) ; this . state . set ( Vertex . class ) ; this . compiler . addMap ( VerticesMap . Map . class , NullWritable . class , FaunusVertex . class , VerticesMap . createConfiguration ( this . state . incrStep ( ) != 0 ) ) ; makeMapReduceString ( VerticesMap . class ) ; return this ; }
Start a traversal at all vertices in the graph .