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fix: Fallback reverse function with array input #2477

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fix: Fallback reverse function with array input #2477

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7f3ec8a
fix: Fallback reverse function with array input
cfmcgrady Sep 29, 2025
6d08728
fix style
cfmcgrady Sep 29, 2025
eff4755
address comment
cfmcgrady Sep 29, 2025
fb04747
fix ci
cfmcgrady Sep 29, 2025
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3 changes: 3 additions & 0 deletions spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -915,6 +915,9 @@ object QueryPlanSerde extends Logging with CometExprShim {
case l @ Length(child) if child.dataType == BinaryType =>
withInfo(l, "Length on BinaryType is not supported")
None
case r @ Reverse(child) if child.dataType.isInstanceOf[ArrayType] =>
withInfo(r, "Reverse on ArrayType is not supported")
None
case expr =>
QueryPlanSerde.exprSerdeMap.get(expr.getClass) match {
case Some(handler) =>
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8 changes: 8 additions & 0 deletions spark/src/test/scala/org/apache/comet/CometExpressionSuite.scala
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Expand Up @@ -3122,4 +3122,12 @@ class CometExpressionSuite extends CometTestBase with AdaptiveSparkPlanHelper {
}
}

test("test reverse function") {
withTable("t1") {
sql("create table t1 using parquet as select sequence(id, 10) as c1 from range(10)")
// FIXME: Change checkSparkAnswer to checkSparkAnswerAndOperator after resolving
// https://github.com/apache/datafusion-comet/issues/2478
checkSparkAnswer("select reverse(c1) AS x FROM t1 ORDER BY c1")
}
}
}
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