Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/14132#discussion_r70938251
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -1774,6 +1775,35 @@ class Analyzer(
}
/**
+ * Substitute Hints.
+ * - BROADCAST/BROADCASTJOIN/MAPJOIN match the closest table with the
given name parameters.
+ */
+ object SubstituteHint extends Rule[LogicalPlan] {
+ def apply(plan: LogicalPlan): LogicalPlan = plan transform {
+ case logical: LogicalPlan => logical transformDown {
+ case h @ Hint(name, parameters, child)
+ if Seq("BROADCAST", "BROADCASTJOIN",
"MAPJOIN").contains(name.toUpperCase) =>
+ var resolvedChild = child
+ for (table <- parameters) {
+ var stop = false
+ resolvedChild = child.transformDown {
+ case r @ BroadcastHint(UnresolvedRelation(_, _)) => r
+ case r @ UnresolvedRelation(t, _) if !stop && t.table ==
table =>
+ stop = true
+ BroadcastHint(r)
+ }
+ }
+ resolvedChild
+
+ // Remove unrecognized hint
--- End diff --
`hint` -> `hints`
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
