cloud-fan commented on a change in pull request #34575:
URL: https://github.com/apache/spark/pull/34575#discussion_r755185991
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileSourceStrategy.scala
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@@ -212,7 +212,9 @@ object FileSourceStrategy extends Strategy with
PredicateHelper with Logging {
val outputSchema = readDataColumns.toStructType
logInfo(s"Output Data Schema: ${outputSchema.simpleString(5)}")
- val outputAttributes = readDataColumns ++ partitionColumns
+ // outputAttributes should also include referenced metadata columns at
the every end
+ val outputAttributes = readDataColumns ++ partitionColumns ++
+ plan.references.collect { case MetadataAttribute(attr) => attr }
Review comment:
shall we use `requiredAttributes` instead of `plan.references`?
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