huaxingao commented on a change in pull request #26480:
[SPARK-29808][ML][PYTHON] StopWordsRemover should support multi-cols
URL: https://github.com/apache/spark/pull/26480#discussion_r345356363
##########
File path:
mllib/src/main/scala/org/apache/spark/ml/feature/StopWordsRemover.scala
##########
@@ -142,16 +165,40 @@ class StopWordsRemover @Since("1.5.0") (@Since("1.5.0")
override val uid: String
terms.filter(s => !lowerStopWords.contains(toLower(s)))
}
}
- val metadata = outputSchema($(outputCol)).metadata
- dataset.select(col("*"), t(col($(inputCol))).as($(outputCol), metadata))
+
+ val (inputColNames, outputColNames) = getInOutCols()
+ val ouputCols = inputColNames.map { inputColName =>
Review comment:
Tried this. It doesn't work :(
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