org.apache.flink.runtime.scheduler.strategy

Class DefaultInputConsumableDecider

java.lang.Object

org.apache.flink.runtime.scheduler.strategy.DefaultInputConsumableDecider

All Implemented Interfaces:

InputConsumableDecider

public class DefaultInputConsumableDecider
extends Object
implements InputConsumableDecider

Default implementation of InputConsumableDecider. This decider will judge whether the executionVertex's inputs are consumable as follows:

For blocking consumed partition group: Whether all result partitions in the group are finished.

For canBePipelined consumed partition group: whether all result partitions in the group are scheduled.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DefaultInputConsumableDecider.Factory Factory for DefaultInputConsumableDecider.

Method Summary

Modifier and Type	Method and Description
boolean	isConsumableBasedOnFinishedProducers(ConsumedPartitionGroup consumedPartitionGroup) Determining whether the consumed partition group is consumable based on finished producers.
boolean	isInputConsumable(SchedulingExecutionVertex executionVertex, Set<ExecutionVertexID> verticesToSchedule, Map<ConsumedPartitionGroup,Boolean> consumableStatusCache) Determining whether the input of an execution vertex is consumable.

Methods inherited from class java.lang.Object

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

Method Detail

isInputConsumable

public boolean isInputConsumable(SchedulingExecutionVertex executionVertex,
                                 Set<ExecutionVertexID> verticesToSchedule,
                                 Map<ConsumedPartitionGroup,Boolean> consumableStatusCache)

Description copied from interface: InputConsumableDecider

Determining whether the input of an execution vertex is consumable.

Specified by:

isInputConsumable in interface InputConsumableDecider

Parameters:

executionVertex - to be determined whether it's input is consumable.

verticesToSchedule - vertices that are not yet scheduled but already decided to be scheduled.

consumableStatusCache - a cache for ConsumedPartitionGroup consumable status. This is to avoid repetitive computation.

isConsumableBasedOnFinishedProducers

public boolean isConsumableBasedOnFinishedProducers(ConsumedPartitionGroup consumedPartitionGroup)

Description copied from interface: InputConsumableDecider

Determining whether the consumed partition group is consumable based on finished producers.

Specified by:

isConsumableBasedOnFinishedProducers in interface InputConsumableDecider

Parameters:

consumedPartitionGroup - to be determined whether it is consumable.