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Yanbo Liang commented on SPARK-13998: ------------------------------------- I think we should first make refactor for UnaryTransformer to support setting Attribute for output column. If this make sense, I can give a try. > HashingTF should extend UnaryTransformer > ---------------------------------------- > > Key: SPARK-13998 > URL: https://issues.apache.org/jira/browse/SPARK-13998 > Project: Spark > Issue Type: Sub-task > Components: ML > Affects Versions: 2.0.0 > Reporter: Jacek Laskowski > Priority: Minor > > Currently > [HashingTF|https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/feature/HashingTF.scala#L37] > extends {{Transformer with HasInputCol with HasOutputCol}}, but there is a > helper > [UnaryTransformer|https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/Transformer.scala#L79-L80] > abstract class for exactly the reason. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org