joins

Type Members

1. case class BroadcastHashJoin(leftKeys: Seq[Expression], rightKeys: Seq[Expression], buildSide: BuildSide, left: SparkPlan, right: SparkPlan) extends SparkPlan with BinaryNode with HashJoin with Product with Serializable

   :: DeveloperApi :: Performs an inner hash join of two child relations.

2. case class BroadcastNestedLoopJoin(left: SparkPlan, right: SparkPlan, buildSide: BuildSide, joinType: JoinType, condition: Option[Expression]) extends SparkPlan with BinaryNode with Product with Serializable

   :: DeveloperApi ::

3. sealed abstract class BuildSide extends AnyRef

   Annotations

   @DeveloperApi()

4. case class CartesianProduct(left: SparkPlan, right: SparkPlan) extends SparkPlan with BinaryNode with Product with Serializable

   :: DeveloperApi ::

5. trait HashJoin extends AnyRef

6. case class HashOuterJoin(leftKeys: Seq[Expression], rightKeys: Seq[Expression], joinType: JoinType, condition: Option[Expression], left: SparkPlan, right: SparkPlan) extends SparkPlan with BinaryNode with Product with Serializable

   :: DeveloperApi :: Performs a hash based outer join for two child relations by shuffling the data using the join keys.

7. case class LeftSemiJoinBNL(streamed: SparkPlan, broadcast: SparkPlan, condition: Option[Expression]) extends SparkPlan with BinaryNode with Product with Serializable

   :: DeveloperApi :: Using BroadcastNestedLoopJoin to calculate left semi join result when there's no join keys for hash join.

8. case class LeftSemiJoinHash(leftKeys: Seq[Expression], rightKeys: Seq[Expression], left: SparkPlan, right: SparkPlan) extends SparkPlan with BinaryNode with HashJoin with Product with Serializable

   :: DeveloperApi :: Build the right table's join keys into a HashSet, and iteratively go through the left table, to find the if join keys are in the Hash set.

9. case class ShuffledHashJoin(leftKeys: Seq[Expression], rightKeys: Seq[Expression], buildSide: BuildSide, left: SparkPlan, right: SparkPlan) extends SparkPlan with BinaryNode with HashJoin with Product with Serializable

   :: DeveloperApi :: Performs an inner hash join of two child relations by first shuffling the data using the join keys.