Github user zecevicp commented on a diff in the pull request:
https://github.com/apache/spark/pull/21109#discussion_r193751918
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -1205,6 +1205,19 @@ object SQLConf {
.booleanConf
.createWithDefault(true)
+ val USE_SMJ_INNER_RANGE_OPTIMIZATION =
--- End diff --
It's just a safety valve. In case there are some queries that I don't
foresee now where this could get in the way.
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