org.apache.flink.runtime.scheduler.strategy

接口 SchedulingStrategy

所有已知实现类:

EagerSchedulingStrategy, LazyFromSourcesSchedulingStrategy

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.

方法概要

限定符和类型	方法和说明
void	onExecutionStateChange(ExecutionVertexID executionVertexId, ExecutionState executionState) Called whenever an Execution changes its state.
void	onPartitionConsumable(ExecutionVertexID executionVertexId, ResultPartitionID resultPartitionId) Called whenever an IntermediateResultPartition becomes consumable.
void	restartTasks(Set<ExecutionVertexID> verticesToRestart) Called whenever vertices need to be restarted (due to task failure).
void	startScheduling() Called when the scheduling is started (initial scheduling operation).

方法详细资料

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).

参数:

verticesToRestart - The tasks need to be restarted

onExecutionStateChange

void onExecutionStateChange(ExecutionVertexID executionVertexId,
                            ExecutionState executionState)

Called whenever an Execution changes its state.

参数:

executionVertexId - The id of the task

executionState - The new state of the execution

onPartitionConsumable

void onPartitionConsumable(ExecutionVertexID executionVertexId,
                           ResultPartitionID resultPartitionId)

Called whenever an IntermediateResultPartition becomes consumable.

参数:

executionVertexId - The id of the producer

resultPartitionId - The id of the result partition