Github user zhengruifeng commented on a diff in the pull request:
https://github.com/apache/spark/pull/19110#discussion_r138517690
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/classification/OneVsRest.scala ---
@@ -297,6 +298,16 @@ final class OneVsRest @Since("1.4.0") (
def setPredictionCol(value: String): this.type = set(predictionCol,
value)
/**
+ * The implementation of parallel one vs. rest runs the classification
for
+ * each class in a separate threads.
+ *
+ * @group expertSetParam
+ */
+ def setParallelism(value: Int): this.type = {
--- End diff --
missing since annotation
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