Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/7985#discussion_r36381603
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastNestedLoopJoin.scala
---
@@ -65,8 +65,9 @@ case class BroadcastNestedLoopJoin(
left.output.map(_.withNullability(true)) ++ right.output
case FullOuter =>
left.output.map(_.withNullability(true)) ++
right.output.map(_.withNullability(true))
- case _ =>
- left.output ++ right.output
+ case x =>
+ throw new IllegalArgumentException(
--- End diff --
BroadcastNestedLoopJoin can't handle non-outer joins, but there was nothing
to guard against this (this would never end up being planned though).
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