aokolnychyi commented on code in PR #9556:
URL: https://github.com/apache/iceberg/pull/9556#discussion_r1468232951
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spark/v3.4/spark-extensions/src/main/scala/org/apache/spark/sql/catalyst/analysis/RewriteMergeIntoTable.scala:
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@@ -214,6 +214,8 @@ object RewriteMergeIntoTable extends
RewriteRowLevelIcebergCommand with Predicat
val rowFromSourceAttr = resolveAttrRef(ROW_FROM_SOURCE_REF, joinPlan)
val rowFromTargetAttr = resolveAttrRef(ROW_FROM_TARGET_REF, joinPlan)
+ // The output expression should retain read attributes for correctly
determining nullability
+ val matchedOutputsWithAttrs = matchedActions.map(matchedActionOutput(_,
metadataAttrs) :+ readAttrs)
Review Comment:
Can we reuse `matchedOutputs` above in this statement?
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