Github user thunterdb commented on a diff in the pull request: https://github.com/apache/spark/pull/16483#discussion_r106529377 --- Diff: graphx/src/main/scala/org/apache/spark/graphx/lib/PageRank.scala --- @@ -353,9 +365,19 @@ object PageRank extends Logging { vertexProgram(id, attr, msgSum) } - Pregel(pagerankGraph, initialMessage, activeDirection = EdgeDirection.Out)( + val rankGraph = Pregel(pagerankGraph, initialMessage, activeDirection = EdgeDirection.Out)( vp, sendMessage, messageCombiner) .mapVertices((vid, attr) => attr._1) - } // end of deltaPageRank + + // If the graph has sinks (vertices with no outgoing edges) the sum of ranks will not be correct --- End diff -- This is the same code as above, please factor it into a function.
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