gatorsmile commented on a change in pull request #24336: [SPARK-27430][SQL]
BroadcastNestedLoopJoinExec can build any side whatever the join type is
URL: https://github.com/apache/spark/pull/24336#discussion_r274070011
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala
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@@ -282,14 +282,16 @@ abstract class SparkStrategies extends
QueryPlanner[SparkPlan] {
// Pick BroadcastNestedLoopJoin if one side could be broadcast
case j @ logical.Join(left, right, joinType, condition, hint)
- if canBroadcastByHints(joinType, left, right, hint) =>
- val buildSide = broadcastSideByHints(joinType, left, right, hint)
+ if hint.leftHint.exists(_.broadcast) ||
hint.rightHint.exists(_.broadcast) =>
+ val buildLeft = hint.leftHint.exists(_.broadcast)
+ val buildRight = hint.rightHint.exists(_.broadcast)
Review comment:
Our test cases do not cover the changes using these hints, right? Could you
add them?
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