Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21252#discussion_r187667011
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -1238,6 +1238,15 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val COMBINE_LIMIT_AFTER_SORT_THRESHOLD =
+ buildConf("spark.sql.execution.combineLimitAfterSortThreshold")
--- End diff --
after some more thoughts, this config name is not very obvious. How about
`topNSortFallbackThreshold`? any better ideas?
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