cloud-fan commented on a change in pull request #35924:
URL: https://github.com/apache/spark/pull/35924#discussion_r832146269
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/execution/adaptive/AdaptiveQueryExecSuite.scala
##########
@@ -2575,6 +2575,22 @@ class AdaptiveQueryExecSuite
assert(findTopLevelAggregate(adaptive5).size == 4)
}
}
+
+ test("SPARK-38578: Avoid unnecessary sort in FileFormatWriter if user has
specified sort") {
+ Seq(
+ ("key", "key, value", false),
+ ("key as x", "key, value", false),
+ ("key", "key", true),
+ ("key, value", "key", true)
+ ).foreach { case (project, sort, required) =>
+ val (origin, adaptive) = runAdaptiveAndVerifyResult(
+ s"""
+ |SELECT $project FROM testdata where key < 0 ORDER BY $sort
Review comment:
this is not even a table insertion, how do we define unnecessary sort?
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