Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/20632#discussion_r168922746
--- Diff: mllib/src/main/scala/org/apache/spark/ml/tree/Node.scala ---
@@ -287,6 +292,41 @@ private[tree] class LearningNode(
}
}
+ /**
+ * Method testing whether a node is a leaf.
+ * @return true iff a node is a leaf.
+ */
+ private def isLeafNode(): Boolean = leftChild.isEmpty &&
rightChild.isEmpty
+
+ /** True iff the node should be a leaf. */
--- End diff --
Likewise an example of the kind of comment that seems to just restate the
method name.
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