Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21529#discussion_r194829803
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/PlannerSuite.scala ---
@@ -679,6 +679,17 @@ class PlannerSuite extends SharedSQLContext {
}
assert(rangeExecInZeroPartition.head.outputPartitioning ==
UnknownPartitioning(0))
}
+
+ test("SPARK-24495: EnsureRequirements can return wrong plan when reusing
the same key in join") {
--- End diff --
This is actually an end-to-end test(checking result not plan), I think it's
better to put it in `SQLQuerySuite`
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