Github user chouqin commented on a diff in the pull request:
https://github.com/apache/spark/pull/2595#discussion_r18260719
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/tree/model/InformationGainStats.scala
---
@@ -38,6 +38,17 @@ class InformationGainStats(
"gain = %f, impurity = %f, left impurity = %f, right impurity = %f"
.format(gain, impurity, leftImpurity, rightImpurity)
}
+
+ override def equals(o: Any) =
--- End diff --
This is used in DecisionTreeSuite to ensure return of
InvalidInformationGainStats in some cases,
we can't simply compare object reference's address.
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