peter-toth commented on a change in pull request #23802: [SPARK-26893][SQL]
Allow partition pruning with subquery filters on file source
URL: https://github.com/apache/spark/pull/23802#discussion_r257682216
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/DataSourceScanExec.scala
##########
@@ -185,6 +185,13 @@ case class FileSourceScanExec(
ret
}
+ @transient private lazy val selectedPartitionsCount =
+ if (partitionFilters.exists(ExecSubqueryExpression.hasSubquery)) {
+ None
Review comment:
This is invoked from `FileSourceScanExec.metadata` and part of
`FileSourceScanExec`'s `toString` value too, so it would throw
```
requirement failed: Subquery subquery250 has not finished
java.lang.IllegalArgumentException: requirement failed: Subquery subquery250
has not finished
at scala.Predef$.require(Predef.scala:281)
at org.apache.spark.sql.execution.ScalarSubquery.eval(subquery.scala:95)
```
exception when printing executed plan.
And I didn't want to get rid of `PartitionCount` metadata entirely.
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