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[SPARK-23748][SS] Fix SS continuous process doesn't support SubqueryAlias issue #21017

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[SPARK-23748][SS] Fix SS continuous process doesn't support SubqueryAlias issue #21017

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2 changes: 1 addition & 1 deletion ...t/src/main/scala/org/apache/spark/sql/catalyst/analysis/UnsupportedOperationChecker.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -345,7 +345,7 @@ object UnsupportedOperationChecker {
plan.foreachUp { implicit subPlan =>
subPlan match {
case (_: Project | _: Filter | _: MapElements | _: MapPartitions |
_: DeserializeToObject | _: SerializeFromObject) =>
_: DeserializeToObject | _: SerializeFromObject | _: SubqueryAlias) =>
case node if node.nodeName == "StreamingRelationV2" =>
case node =>
throwError(s"Continuous processing does not support ${node.nodeName} operations.")
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19 changes: 19 additions & 0 deletions sql/core/src/test/scala/org/apache/spark/sql/streaming/continuous/ContinuousSuite.scala
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Expand Up @@ -171,6 +171,25 @@ class ContinuousSuite extends ContinuousSuiteBase {
"Continuous processing does not support current time operations."))
}

test("subquery alias") {
val df = spark.readStream
.format("rate")
.option("numPartitions", "5")
.option("rowsPerSecond", "5")
.load()
.createOrReplaceTempView("rate")
val test = spark.sql("select value from rate where value > 5")

testStream(test, useV2Sink = true)(
StartStream(longContinuousTrigger),
AwaitEpoch(0),
Execute(waitForRateSourceTriggers(_, 2)),
IncrementEpoch(),
Execute(waitForRateSourceTriggers(_, 4)),
IncrementEpoch(),
CheckAnswerRowsContains(scala.Range(6, 20).map(Row(_))))
}

test("repeatedly restart") {
val df = spark.readStream
.format("rate")
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