Github user sethah commented on a diff in the pull request:
https://github.com/apache/spark/pull/11119#discussion_r77734849
--- Diff: mllib/src/main/scala/org/apache/spark/ml/util/ReadWrite.scala ---
@@ -318,6 +327,14 @@ private[ml] object DefaultParamsWriter {
val metadataJson: String = compact(render(metadata))
metadataJson
}
+
+ def saveInitialModel[T <: HasInitialModel[_ <: MLWritable]](instance: T,
path: String): Unit = {
+ if (instance.isDefined(instance.getParam("initialModel"))) {
--- End diff --
Since we specify the type parameters, you can access the param directly
`instance.isDefined(instance.initialModel)`
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