Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17027#discussion_r103073282
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala ---
@@ -175,19 +175,14 @@ class Dataset[T] private[sql](
}
@transient private[sql] val logicalPlan: LogicalPlan = {
- def hasSideEffects(plan: LogicalPlan): Boolean = plan match {
- case _: Command |
- _: InsertIntoTable => true
- case _ => false
- }
-
+ // For various commands (like DDL) and queries with side effects, we
force query execution
+ // to happen right away to let these side effects take place eagerly.
queryExecution.analyzed match {
// For various commands (like DDL) and queries with side effects, we
force query execution
--- End diff --
actually let me remove it while merging
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