Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/9399#discussion_r43590460
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceStrategy.scala
---
@@ -295,18 +309,20 @@ private[sql] object DataSourceStrategy extends
Strategy with Logging {
val requestedColumns =
projects.asInstanceOf[Seq[Attribute]] // Safe due to if above.
.map(relation.attributeMap) // Match original case of
attributes.
+ .filterNot(handledSet.contains)
val scan = execution.PhysicalRDD.createFromDataSource(
projects.map(_.toAttribute),
- scanBuilder(requestedColumns, pushedFilters),
+ scanBuilder(requestedColumns, candidatePredicates, pushedFilters),
--- End diff --
I think I understand what's going on. Actually, `pushedFilters` also
contains those filters that cannot be handled by a data source and
`candidatePredicates` contains filters that cannot be converted to public
Filter interface.
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