Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/11119#discussion_r56110697
--- Diff: mllib/src/main/scala/org/apache/spark/ml/clustering/KMeans.scala
---
@@ -269,6 +322,13 @@ class KMeans @Since("1.5.0") (
.setMaxIterations($(maxIter))
.setSeed($(seed))
.setEpsilon($(tol))
+
+ if (isSet(initialModel)) {
+ require($(initialModel).parentModel.clusterCenters.length == $(k),
"mismatched cluster count")
--- End diff --
This check should go in validateAndTransformSchema as well (or instead).
Also, print mismatched values in error message.
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