Github user dbtsai commented on a diff in the pull request: https://github.com/apache/spark/pull/11119#discussion_r61018699 --- Diff: mllib/src/main/scala/org/apache/spark/ml/clustering/KMeans.scala --- @@ -274,6 +339,12 @@ class KMeans @Since("1.5.0") ( .setMaxIterations($(maxIter)) .setSeed($(seed)) .setEpsilon($(tol)) + + if (isSet(initialModel)) { + require(rdd.first().size == $(initialModel).clusterCenters.head.size, "mismatched dimension") --- End diff -- can you print the size vector in the message?
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