Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/8652#discussion_r42079119
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala ---
@@ -268,6 +268,12 @@ private[sql] abstract class SparkStrategies extends
QueryPlanner[SparkPlan] {
object CartesianProduct extends Strategy {
def apply(plan: LogicalPlan): Seq[SparkPlan] = plan match {
+ case logical.Join(CanBroadcast(left), right, joinType, condition) =>
+ execution.joins.BroadcastNestedLoopJoin(
+ planLater(left), planLater(right), joins.BuildLeft, joinType,
condition) :: Nil
--- End diff --
`Cartesian` means that there is no join condition, right?
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