Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/18600#discussion_r126803053
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceStrategy.scala
---
@@ -395,25 +367,33 @@ case class DataSourceStrategy(conf: SQLConf) extends
Strategy with Logging with
.asInstanceOf[Seq[Attribute]]
// Match original case of attributes.
.map(relation.attributeMap)
- // Don't request columns that are only referenced by pushed
filters.
- .filterNot(handledSet.contains)
val scan = RowDataSourceScanExec(
- projects.map(_.toAttribute),
+ relation.output,
+ requestedColumns.map(relation.output.indexOf),
+ pushedFilters.toSet,
scanBuilder(requestedColumns, candidatePredicates, pushedFilters),
- relation.relation, UnknownPartitioning(0), metadata,
- relation.catalogTable.map(_.identifier))
+ relation.relation, relation.catalogTable.map(_.identifier))
--- End diff --
nit; can we make this into two lines while this refactoring?
```
relation.relation,
relation.catalogTable.map(_.identifier))
```
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