zml1206 commented on code in PR #9290:
URL: https://github.com/apache/incubator-gluten/pull/9290#discussion_r2036448202
##########
backends-velox/src/main/scala/org/apache/gluten/execution/ColumnarPartialProjectExec.scala:
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@@ -141,21 +136,20 @@ case class ColumnarPartialProjectExec(
if (projectAttributes.size == child.output.size) {
return ValidationResult.failed("UDF need all the columns in child
output")
}
- if (original.output.isEmpty) {
- return ValidationResult.failed("Project fallback because output is
empty")
- }
Review Comment:
If `original.output` is empty, then `replacedAliasUdf` must be also empty,
repeat the following judgment.
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