cloud-fan commented on a change in pull request #30093:
URL: https://github.com/apache/spark/pull/30093#discussion_r511928699



##########
File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -1242,6 +1242,13 @@ object SQLConf {
     .booleanConf
     .createWithDefault(true)
 
+  val REMOVE_REDUNDANT_SORTS_ENABLED = 
buildConf("spark.sql.execution.removeRedundantSorts")

Review comment:
       If we want to backport this, it's safer to have a config for the new 
rule, in case it has bugs.




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