cloud-fan commented on a change in pull request #32724:
URL: https://github.com/apache/spark/pull/32724#discussion_r643312015
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/execution/adaptive/AdaptiveQueryExecSuite.scala
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@@ -1373,6 +1386,28 @@ class AdaptiveQueryExecSuite
}
}
+ test("SPARK-35585: Support propagate empty relation through project/filter")
{
+ withSQLConf(SQLConf.ADAPTIVE_EXECUTION_ENABLED.key -> "true",
+ SQLConf.AUTO_BROADCASTJOIN_THRESHOLD.key -> "-1") {
+ val (plan1, adaptivePlan1) = runAdaptiveAndVerifyResult(
+ "SELECT key FROM testData WHERE key = 0 ORDER BY key, value")
+ assert(findTopLevelSort(plan1).size == 1)
+ assert(findTopLevelSort(adaptivePlan1).isEmpty)
Review comment:
This doesn't prove that we can optimize the project away. How about
```
assert(stripAQEPlan(adaptivePlan1).isInstanceOf[LocalTableScanExec])
```
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