Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/493#discussion_r12080483
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/recommendation/ALS.scala ---
@@ -708,6 +709,123 @@ object ALS {
trainImplicit(ratings, rank, iterations, 0.01, -1, 1.0)
}
+ @DeveloperApi
+ case class IterationCost(inboundBytes: Double, computation: Double,
outboundBytes: Double)
+
+ /**
+ * :: DeveloperApi ::
+ * Given an RDD of ratings, a rank, and two partitioners, compute rough
estimates of the
+ * computation time and communication cost of one iteration of ALS.
Returns a pair of pairs of
--- End diff --
Doc needs update.
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