Github user zhengruifeng commented on a diff in the pull request:
https://github.com/apache/spark/pull/14470#discussion_r73465384
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/classification/DecisionTreeClassifier.scala
---
@@ -84,6 +84,13 @@ class DecisionTreeClassifier @Since("1.4.0") (
val categoricalFeatures: Map[Int, Int] =
MetadataUtils.getCategoricalFeatures(dataset.schema($(featuresCol)))
val numClasses: Int = getNumClasses(dataset)
+
+ if (isDefined(thresholds)) {
+ require($(thresholds).length == numClasses,
this.getClass.getSimpleName +
--- End diff --
Because `ProbabilisticClassificationModel.transform` first check like this,
so I just follow this style.
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