Github user srowen commented on a diff in the pull request: https://github.com/apache/spark/pull/23093#discussion_r235019790 --- Diff: mllib/src/main/scala/org/apache/spark/ml/classification/DecisionTreeClassifier.scala --- @@ -91,7 +91,7 @@ class DecisionTreeClassifier @Since("1.4.0") ( /** @group setParam */ @Since("1.4.0") - override def setImpurity(value: String): this.type = set(impurity, value) + def setImpurity(value: String): this.type = set(impurity, value) --- End diff -- OK I think I'm wrong about the logic, given the first attempt to do this in https://github.com/apache/spark/pull/17867 Yes this is fine. In fact I think you're welcome to just revive that PR and remove a lot of similar deprecated methods again.
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