Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/6993#discussion_r33195310
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/classification/OneVsRest.scala ---
@@ -90,7 +90,7 @@ final class OneVsRestModel private[ml] (
val accColName = "mbc$acc" + UUID.randomUUID().toString
val init: () => Map[Int, Double] = () => {Map()}
val mapType = MapType(IntegerType, DoubleType, valueContainsNull =
false)
- val newDataset = dataset.withColumn(accColName, callUDF(init, mapType))
+ val newDataset = dataset.withColumn(accColName, udf(init).apply())
--- End diff --
Style nit: I think we call `udf` above so the invocation just looks like
`init()`.
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