Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/14747#discussion_r75846911
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/feature/QuantileDiscretizer.scala ---
@@ -114,7 +114,12 @@ final class QuantileDiscretizer @Since("1.6.0")
(@Since("1.6.0") override val ui
splits(0) = Double.NegativeInfinity
splits(splits.length - 1) = Double.PositiveInfinity
- val bucketizer = new Bucketizer(uid).setSplits(splits)
+ val cutpoints = splits.distinct
+ if (splits.length != cutpoints.length) {
+ log.warn("Some quantiles were identical. Bucketing to " +
(cutpoints.length - 1) +
--- End diff --
Nit: you can use string interpolation here. That part was fine. `s"...
${cutpoints.length - 1} ..."`. Super nit while we're still here: cutpoints is a
term not used elsewhere. Just "distinctSplits"?
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