cloud-fan commented on a change in pull request #22957: [SPARK-25951][SQL]
Ignore aliases for distributions and orderings
URL: https://github.com/apache/spark/pull/22957#discussion_r241966109
##########
File path: sql/core/src/test/scala/org/apache/spark/sql/DatasetSuite.scala
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@@ -1549,6 +1551,38 @@ class DatasetSuite extends QueryTest with
SharedSQLContext {
Seq(Row("Amsterdam")))
}
+ test("SPARK-25951: avoid redundant shuffle on rename") {
Review comment:
I'm a little worried about introducing such a big change for such a corner
case.
Looking at this test case, it seems updating the `outputPartitioning`
according to the project list is good enough?
cc @maryannxue
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