srowen commented on a change in pull request #26523: [SPARK-29877][GRAPHX]
static PageRank allow checkPoint from previous computations
URL: https://github.com/apache/spark/pull/26523#discussion_r348000592
##########
File path:
graphx/src/test/scala/org/apache/spark/graphx/lib/PageRankSuite.scala
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@@ -268,6 +338,24 @@ class PageRankSuite extends SparkFunSuite with
LocalSparkContext {
}
}
+ test("Loop with source PageRank with checkpoint") {
+ withSpark { sc =>
+ val edges = sc.parallelize((1L, 2L) :: (2L, 3L) :: (3L, 4L) :: (4L, 2L)
:: Nil)
+ val g = Graph.fromEdgeTuples(edges, 1)
+ val resetProb = 0.15
+ val tol = 0.0001
+ val errorTol = 1.0e-5
+
+ val (iterAfterHalfCheckPoint, totalIters) =
+ convergenceIterations(g, resetProb, tol, errorTol)
+
+ // In this case checkPoint helps a lot
+ assert(totalIters == 34)
+ assert(iterAfterHalfCheckPoint == 17)
+
Review comment:
Nit: remove blank lines like this
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