cascading.flow.tez.planner.rule.transformer

Class BoundaryBalanceSplitToStreamedHashJoinTransformer

java.lang.Object

cascading.flow.planner.iso.transformer.GraphTransformer<cascading.flow.planner.graph.ElementGraph,cascading.flow.planner.graph.ElementGraph>

cascading.flow.planner.rule.RuleTransformer

cascading.flow.planner.rule.transformer.RuleInsertionTransformer

cascading.flow.tez.planner.rule.transformer.BoundaryBalanceSplitToStreamedHashJoinTransformer

All Implemented Interfaces:

cascading.flow.planner.rule.Rule

public class BoundaryBalanceSplitToStreamedHashJoinTransformer
extends cascading.flow.planner.rule.transformer.RuleInsertionTransformer

Inserts Boundary after split that joins back into a HashJoin.

this allows testGroupBySplitGroupByJoin to pass, and simplifies testJoinSamePipeAroundGroupBy by preventing the upstream operations to duplicate processing in parallel nodes

Field Summary

Fields inherited from class cascading.flow.planner.rule.RuleTransformer

contractedTransformer, graphTransformer, ruleExpression, subGraphTransformer

Constructor Summary

Constructors

Constructor and Description
BoundaryBalanceSplitToStreamedHashJoinTransformer()

Method Summary

Methods inherited from class cascading.flow.planner.rule.RuleTransformer

getRuleName, getRulePhase, performTransform, toString, transform

Methods inherited from class cascading.flow.planner.iso.transformer.GraphTransformer

transform

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

BoundaryBalanceSplitToStreamedHashJoinTransformer

public BoundaryBalanceSplitToStreamedHashJoinTransformer()