Github user imatiach-msft commented on a diff in the pull request:
https://github.com/apache/spark/pull/21632#discussion_r218657065
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/classification/DecisionTreeClassifier.scala
---
@@ -97,28 +103,48 @@ class DecisionTreeClassifier @Since("1.4.0") (
@Since("1.6.0")
override def setSeed(value: Long): this.type = set(seed, value)
+ /**
+ * Sets the value of param [[weightCol]].
+ * If this is not set or empty, we treat all instance weights as 1.0.
+ * Default is not set, so all instances have weight one.
+ *
+ * @group setParam
+ */
+ @Since("2.2.0")
--- End diff --
done
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