Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/20405#discussion_r164267184
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala ---
@@ -1216,7 +1216,7 @@ class Dataset[T] private[sql](
*/
@scala.annotation.varargs
def hint(name: String, parameters: Any*): Dataset[T] = withTypedPlan {
- UnresolvedHint(name, parameters, logicalPlan)
+ UnresolvedHint(name, parameters, planWithBarrier)
--- End diff --
@jaceklaskowski Because the logical plan is wrapped in analysis barrier,
`ResolveBroadcastHints` can't traverse down it to reach the
`UnresolvedRelation` at
https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveHints.scala#L60-L61.
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