Github user WeichenXu123 commented on a diff in the pull request:
https://github.com/apache/spark/pull/19208#discussion_r150731403
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/tuning/TrainValidationSplit.scala ---
@@ -177,7 +202,9 @@ class TrainValidationSplit @Since("1.5.0")
(@Since("1.5.0") override val uid: St
}
@Since("2.0.0")
- override def write: MLWriter = new
TrainValidationSplit.TrainValidationSplitWriter(this)
+ override def write: TrainValidationSplit.TrainValidationSplitWriter = {
--- End diff --
Ah, there is two `write` method, one for `Estimator` and another for
`Model`.
We only need to change the return type of `write` method for `model`.
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