taiyang-li commented on code in PR #12486:
URL: https://github.com/apache/gluten/pull/12486#discussion_r3592177493
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backends-velox/src/main/scala/org/apache/gluten/execution/ColumnarPartialProjectExec.scala:
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@@ -297,6 +297,22 @@ object ColumnarPartialProjectExec {
HiveUDFTransformer.isHiveUDF(h) &&
!VeloxHiveUDFTransformer.isSupportedHiveUDF(h)
}
+ /**
+ * Returns true for generic catalyst expressions that Velox cannot offload
and should be pulled
+ * into ColumnarPartialProject, excluding ScalaUDF/HiveUDF and
non-row-evaluable wrappers.
+ */
+ private def isUnmappedGlutenExpr(expr: Expression): Boolean = expr match {
+ case _: ScalaUDF => false
+ case _ if HiveUDFTransformer.isHiveUDF(expr) => false
+ case _: Literal | _: AttributeReference | _: BoundReference => false
+ case _: NamedExpression => false
+ case _ =>
+ expr.deterministic &&
+ !expr.isInstanceOf[Unevaluable] &&
+ !expr.isInstanceOf[LambdaFunction] &&
+ !ExpressionMappings.expressionsMap.contains(expr.getClass)
Review Comment:
I'll check it.
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