gengliangwang commented on a change in pull request #33584:
URL: https://github.com/apache/spark/pull/33584#discussion_r683135973
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/PushDownUtils.scala
##########
@@ -117,7 +145,11 @@ object PushDownUtils extends PredicateHelper {
relation: DataSourceV2Relation,
projects: Seq[NamedExpression],
filters: Seq[Expression]): (Scan, Seq[AttributeReference]) = {
- val exprs = projects ++ filters
+ val filePartitionFilter = scanBuilder match {
+ case fileScanBuilder: FileScanBuilder =>
fileScanBuilder.getPartitionFilters
Review comment:
```
If we don't want to touch PruneFileSourcePartitions, I guess instead of
checking if the postScanFilter is empty using if filters.isEmpty, we do
something like this:
if (JDBC)
if filters.isEmpty
push down aggregate
else // file based
if filters are only partition filters
push down aggregate
This looks hacky though. Please let me know if anybody has a better idea.
```
@huaxingao I don't have a better idea either.
But you have to match special case `FileScanBuilder` here anyway. I would
prefer resolving the partition filters in `pushAggregates`, which is more
straightforward.
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