Github user davies commented on a diff in the pull request: https://github.com/apache/spark/pull/8835#discussion_r39926350 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/pythonUDFs.scala --- @@ -342,51 +348,57 @@ case class BatchPythonEvaluation(udf: PythonUDF, output: Seq[Attribute], child: override def canProcessSafeRows: Boolean = true protected override def doExecute(): RDD[InternalRow] = { - val childResults = child.execute().map(_.copy()) + val inputRDD = child.execute() --- End diff -- I think we should keep the `copy()` here.
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