cloud-fan commented on a change in pull request #28810:
URL: https://github.com/apache/spark/pull/28810#discussion_r439904681
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -1334,13 +1340,13 @@ object PushPredicateThroughJoin extends
Rule[LogicalPlan] with PredicateHelper {
(rightFilterConditions ++ commonFilterCondition).
reduceLeftOption(And).map(Filter(_, newJoin)).getOrElse(newJoin)
- case FullOuter => f // DO Nothing for Full Outer Join
- case NaturalJoin(_) => sys.error("Untransformed NaturalJoin node")
- case UsingJoin(_, _) => sys.error("Untransformed Using join node")
+
+ case jt =>
+ throw new IllegalStateException(s"Unexpected join type: $jt")
Review comment:
`IllegalStateException` means unexpected code path, I think this is the
standard in Java, +1
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