Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/19568#discussion_r147470946 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/joins/InnerJoinSuite.scala --- @@ -124,7 +125,8 @@ class InnerJoinSuite extends SparkPlanTest with SharedSQLContext { rightPlan: SparkPlan) = { val sortMergeJoin = joins.SortMergeJoinExec(leftKeys, rightKeys, Inner, boundCondition, leftPlan, rightPlan) - EnsureRequirements(spark.sessionState.conf).apply(sortMergeJoin) + EnsureRequirements(spark.sessionState.conf) + .apply(ProjectExec(sortMergeJoin.output, sortMergeJoin)) --- End diff -- Why we need to change this?
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