Github user dongjoon-hyun commented on a diff in the pull request: https://github.com/apache/spark/pull/22790#discussion_r227152309 --- Diff: mllib/src/main/scala/org/apache/spark/mllib/clustering/BisectingKMeansModel.scala --- @@ -126,7 +126,7 @@ object BisectingKMeansModel extends Loader[BisectingKMeansModel] { val model = SaveLoadV1_0.load(sc, path) model case (SaveLoadV2_0.thisClassName, SaveLoadV2_0.thisFormatVersion) => - val model = SaveLoadV1_0.load(sc, path) + val model = SaveLoadV2_0.load(sc, path) --- End diff -- This is not a regression, but it looks like a correctness or data loss issue at Spark 2.4.0 new feature. Do you know why https://issues.apache.org/jira/browse/SPARK-23412 is created as a `Minor` and `Documentation` issue?
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