Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/18193#discussion_r120015133 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/PruneFileSourcePartitions.scala --- @@ -59,7 +60,10 @@ private[sql] object PruneFileSourcePartitions extends Rule[LogicalPlan] { val prunedFileIndex = catalogFileIndex.filterPartitions(partitionKeyFilters.toSeq) val prunedFsRelation = fsRelation.copy(location = prunedFileIndex)(sparkSession) - val prunedLogicalRelation = logicalRelation.copy(relation = prunedFsRelation) + val withStats = logicalRelation.catalogTable.map(_.copy( + stats = Some(CatalogStatistics(sizeInBytes = BigInt(prunedFileIndex.sizeInBytes))))) --- End diff -- good catch! I think this is a bug and worth a separated PR to fix it.
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