[GitHub] [spark] viirya commented on a change in pull request #25499: [SPARK-28774] [SQL] Fix exchange reuse for columnar data

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viirya commented on a change in pull request #25499: [SPARK-28774] [SQL] Fix exchange reuse for columnar data
URL: https://github.com/apache/spark/pull/25499#discussion_r315813454
 
 

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 File path: sql/core/src/test/scala/org/apache/spark/sql/execution/ExchangeSuite.scala
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 @@ -105,6 +120,17 @@ class ExchangeSuite extends SparkPlanTest with SharedSparkSession {
     assert(exchange5 sameResult exchange4)
   }
 
+  test ("Columnar exchange works") {
+    val df = spark.range(10)
+    val plan = df.queryExecution.executedPlan
+    assert(plan sameResult plan)
 
 Review comment:
   looks like a redundant assert?

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