org.apache.flink.table.planner.plan.processors.utils

Class InputPriorityConflictResolver

java.lang.Object

org.apache.flink.table.planner.plan.processors.utils.InputPriorityGraphGenerator

org.apache.flink.table.planner.plan.processors.utils.InputPriorityConflictResolver

@Internal
public class InputPriorityConflictResolver
extends InputPriorityGraphGenerator

Subclass of the InputPriorityGraphGenerator.

This class resolve conflicts by inserting a BatchExecExchange into the conflicting input.

Field Summary

Fields inherited from class org.apache.flink.table.planner.plan.processors.utils.InputPriorityGraphGenerator

graph

Constructor Summary

Constructors

Constructor and Description
InputPriorityConflictResolver(List<org.apache.flink.table.planner.plan.nodes.exec.ExecNode<?,?>> roots, ExecEdge.DamBehavior safeDamBehavior, org.apache.flink.streaming.api.transformations.ShuffleMode shuffleMode) Create a InputPriorityConflictResolver for the given ExecNode graph.

Method Summary

Modifier and Type	Method and Description
void	detectAndResolve()
protected void	resolveInputPriorityConflict(org.apache.flink.table.planner.plan.nodes.exec.ExecNode<?,?> node, int higherInput, int lowerInput)

Methods inherited from class org.apache.flink.table.planner.plan.processors.utils.InputPriorityGraphGenerator

createTopologyGraph

Methods inherited from class java.lang.Object

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

Constructor Detail

InputPriorityConflictResolver

public InputPriorityConflictResolver(List<org.apache.flink.table.planner.plan.nodes.exec.ExecNode<?,?>> roots,
                                     ExecEdge.DamBehavior safeDamBehavior,
                                     org.apache.flink.streaming.api.transformations.ShuffleMode shuffleMode)

Create a InputPriorityConflictResolver for the given ExecNode graph.

Parameters:

roots - the first layer of nodes on the output side of the graph

safeDamBehavior - when checking for conflicts we'll ignore the edges with ExecEdge.DamBehavior stricter or equal than this

shuffleMode - when a conflict occurs we'll insert an BatchExecExchange node with this shuffleMode to resolve conflict

Method Detail

detectAndResolve

public void detectAndResolve()

resolveInputPriorityConflict

protected void resolveInputPriorityConflict(org.apache.flink.table.planner.plan.nodes.exec.ExecNode<?,?> node,
                                            int higherInput,
                                            int lowerInput)

Specified by:

resolveInputPriorityConflict in class InputPriorityGraphGenerator