joins

Type Members

1. case class HashJoinExec(leftKeys: Seq[Expression], rightKeys: Seq[Expression], buildSide: BuildSide, condition: Option[Expression], joinType: JoinType, left: SparkPlan, right: SparkPlan, leftSizeInBytes: BigInt, rightSizeInBytes: BigInt, replicatedTableJoin: Boolean) extends NonRecursivePlans with BinaryExecNode with HashJoin with SnappyJoinLike with BatchConsumer with Product with Serializable

   

   :: DeveloperApi :: Performs a local hash join of two child relations.

   :: DeveloperApi :: Performs a local hash join of two child relations. If a relation (out of a datasource) is already replicated across all nodes then rather than doing a Broadcast join which can be expensive, this join just scans through the single partition of the replicated relation while streaming through the other relation.

   Annotations

   @DeveloperApi()

2. trait SnappyJoinLike extends SparkPlan

   

   Base trait for joins used in SnappyData.

   Base trait for joins used in SnappyData. Currently this allows children to have subsets of join keys as partitioning columns without introducing a shuffle.

3. class SnappySortMergeJoinExec extends SortMergeJoinExec with SnappyJoinLike

   

   Extension to Spark's SortMergeJoinExec to avoid exchange for cases when join keys are a subset of child plan partitioning.