Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/11694#discussion_r56056490
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/regression/GeneralizedLinearRegression.scala
---
@@ -573,6 +660,41 @@ class GeneralizedLinearRegressionModel private[ml] (
familyAndLink.fitted(eta)
}
+ private var trainingSummary: Option[GeneralizedLinearRegressionSummary]
= None
+
+ /**
+ * Gets R-like summary of model on training set. An exception is
+ * thrown if `trainingSummary == None`.
+ */
+ @Since("2.0.0")
+ def summary: GeneralizedLinearRegressionSummary = trainingSummary match {
+ case Some(summ) => summ
+ case None =>
+ throw new SparkException(
+ "No training summary available for this
GeneralizedLinearRegressionModel",
+ new NullPointerException())
--- End diff --
This is not a `NullPointerException`. We can just leave it as a
`RuntimeException` for now.
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