Github user sddyljsx commented on a diff in the pull request:
https://github.com/apache/spark/pull/21859#discussion_r211270748
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -1207,6 +1207,13 @@ object SQLConf {
.intConf
.createWithDefault(100)
+ val RANGE_EXCHANGE_SAMPLE_CACHE_ENABLE =
+ buildConf("spark.sql.execution.rangeExchange.sampleCache.enabled")
--- End diff --
Yes. The RangePartitioner is mainly used for sorting. Not only in Spark
Sql, it is used in many other places. There is no need for config here. I
removed the config, and the optimization will work by default.
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