Github user kiszk commented on a diff in the pull request: https://github.com/apache/spark/pull/23154#discussion_r236919935 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/generators.scala --- @@ -258,7 +258,7 @@ case class GeneratorOuter(child: Generator) extends UnaryExpression with Generat throw new UnsupportedOperationException(s"Cannot evaluate expression: $this") final override protected def doGenCode(ctx: CodegenContext, ev: ExprCode): ExprCode = - throw new UnsupportedOperationException(s"Cannot evaluate expression: $this") + throw new UnsupportedOperationException(s"Cannot generate code expression: $this") --- End diff -- ditto
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