cloud-fan commented on code in PR #40385:
URL: https://github.com/apache/spark/pull/40385#discussion_r1143134007
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sql/core/src/test/scala/org/apache/spark/sql/ExplainSuite.scala:
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@@ -771,6 +775,163 @@ class ExplainSuiteAE extends ExplainSuiteHelper with
EnableAdaptiveExecutionSuit
FormattedMode,
statistics)
}
+
+ test("SPARK-42753: Process subtree for ReusedExchange with unknown child") {
+ // Simulate a simplified subtree with a ReusedExchange pointing to an
Exchange node that has
+ // no ID. This is a rare edge cases that could arise during AQE if there
are multiple
Review Comment:
```suggestion
// no ID. This is a rare edge case that could arise during AQE if there
are multiple
```
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