Github user dilipbiswal commented on a diff in the pull request: https://github.com/apache/spark/pull/21941#discussion_r206764090 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala --- @@ -535,14 +535,14 @@ abstract class SparkStrategies extends QueryPlanner[SparkPlan] { case logical.Intersect(left, right, true) => throw new IllegalStateException( "logical intersect operator should have been replaced by union, aggregate" + - "and generate operators in the optimizer") + " and generate operators in the optimizer") case logical.Except(left, right, false) => throw new IllegalStateException( "logical except operator should have been replaced by anti-join in the optimizer") case logical.Except(left, right, true) => throw new IllegalStateException( "logical except (all) operator should have been replaced by union, aggregate" + - "and generate operators in the optimizer") + " and generate operators in the optimizer") --- End diff -- This is not related to the current PR. This addresses a comment from @HyukjinKwon in [21886](https://github.com/apache/spark/pull/21886)
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