Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/22957#discussion_r237745005 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/PlannerSuite.scala --- @@ -780,6 +780,23 @@ class PlannerSuite extends SharedSQLContext { classOf[PartitioningCollection]) } } + + test("SPARK-25951: avoid redundant shuffle on rename") { --- End diff -- can we have an end-to-end test as well?
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