Github user sethah commented on a diff in the pull request:
https://github.com/apache/spark/pull/17117#discussion_r104090273
--- Diff: mllib/src/main/scala/org/apache/spark/ml/clustering/KMeans.scala
---
@@ -337,15 +366,61 @@ class KMeans @Since("1.5.0") (
@Since("1.5.0")
override def transformSchema(schema: StructType): StructType = {
+ if ($(initMode) == MLlibKMeans.K_MEANS_INITIAL_MODEL) {
--- End diff --
It might be nice to factor this logic out into a method like
`assertInitialModelValid` or something similar. Actually, we could add an
abstract method to the `HasInitialModel` trait that each subclass can implement
differently.
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