SchedulingStrategy (Flink : Runtime 2.0.0 API)

All Known Implementing Classes:

PipelinedRegionSchedulingStrategy, VertexwiseSchedulingStrategy
```
public interface SchedulingStrategy
```
Component which encapsulates the scheduling logic. It can react to execution state changes and partition consumable events. Moreover, it is responsible for resolving task failures.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`void`	`onExecutionStateChange(ExecutionVertexID executionVertexId, ExecutionState executionState)`	Called whenever an `Execution` changes its state.
`void`	`onPartitionConsumable(IntermediateResultPartitionID resultPartitionId)`	Called whenever an `IntermediateResultPartition` becomes consumable.
`void`	`restartTasks(Set<ExecutionVertexID> verticesToRestart)`	Called whenever vertices need to be restarted (due to task failure).
`default void`	`scheduleAllVerticesIfPossible()`	Schedules all vertices and excludes any vertices that are already finished or whose inputs are not yet ready.
`void`	`startScheduling()`	Called when the scheduling is started (initial scheduling operation).

- Method Detail
  - startScheduling
```
void startScheduling()
```
    Called when the scheduling is started (initial scheduling operation).
  - restartTasks
```
void restartTasks(Set<ExecutionVertexID> verticesToRestart)
```
    Called whenever vertices need to be restarted (due to task failure).
    
    Parameters:
    
    verticesToRestart - The tasks need to be restarted
  - onExecutionStateChange
```
void onExecutionStateChange(ExecutionVertexID executionVertexId,
                            ExecutionState executionState)
```
    Called whenever an Execution changes its state.
    
    Parameters:
    
    executionVertexId - The id of the task
    
    executionState - The new state of the execution
  - onPartitionConsumable
```
void onPartitionConsumable(IntermediateResultPartitionID resultPartitionId)
```
    Called whenever an IntermediateResultPartition becomes consumable.
    
    Parameters:
    
    resultPartitionId - The id of the result partition
  - scheduleAllVerticesIfPossible
```
default void scheduleAllVerticesIfPossible()
```
    Schedules all vertices and excludes any vertices that are already finished or whose inputs are not yet ready.