Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/22014#discussion_r208089613
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/statsEstimation/ValueInterval.scala
---
@@ -86,6 +87,7 @@ object ValueInterval {
val newMax = if (n1.max <= n2.max) n1.max else n2.max
(Some(EstimationUtils.fromDouble(newMin, dt)),
Some(EstimationUtils.fromDouble(newMax, dt)))
+ case _ => throw new RuntimeException(s"Not supported pair: $r1, $r2
at intersect()")
--- End diff --
Shall we do `UnsupportedOperationException`?
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