Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/19714#discussion_r153865403
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala ---
@@ -189,6 +219,13 @@ abstract class SparkStrategies extends
QueryPlanner[SparkPlan] {
// --- Without joining keys
------------------------------------------------------------
// Pick BroadcastNestedLoopJoin if one side could be broadcasted
+ case j @ logical.Join(left, right, joinType, condition)
+ if (canBuildRight(joinType) && right.stats.hints.broadcast)
+ || (canBuildLeft(joinType) && left.stats.hints.broadcast) =>
--- End diff --
The same here
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