Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/7095#discussion_r33993877
--- Diff: mllib/src/main/scala/org/apache/spark/ml/tree/treeModels.scala ---
@@ -70,6 +71,10 @@ private[ml] trait TreeEnsembleModel {
/** Weights for each tree, zippable with [[trees]] */
def treeWeights: Array[Double]
+ /** Weights used by the python wrappers. */
+ // Note: An array cannot be returned directly due to serialization
problems.
+ def javaTreeWeights: Vector = Vectors.dense(treeWeights)
--- End diff --
Make it package private. Java users do not really need it.
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