gagafunctor commented on a change in pull request #23983: [SPARK-26881][core]
Heuristic for tree aggregate depth
URL: https://github.com/apache/spark/pull/23983#discussion_r263773344
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File path:
mllib/src/test/scala/org/apache/spark/mllib/linalg/distributed/RowMatrixSuite.scala
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@@ -101,6 +101,14 @@ class RowMatrixSuite extends SparkFunSuite with
MLlibTestSparkContext {
}
}
+ test("getTreeAggregateIdealDepth") {
+ val rowMat = new RowMatrix(sc.emptyRDD[Vector])
+ val driverResultSizeInMb = 10000
+ val nbPartitions = 10000
+ assert(rowMat.getTreeAggregateIdealDepth(99, nbPartitions,
driverResultSizeInMb) == 2)
Review comment:
nice, another trick I'll apply in my code from now on, thanks.
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