org.apache.flink.runtime.executiongraph.failover.flip1

类 RestartPipelinedRegionFailoverStrategy

java.lang.Object

org.apache.flink.runtime.executiongraph.failover.flip1.RestartPipelinedRegionFailoverStrategy

所有已实现的接口:

FailoverStrategy

public class RestartPipelinedRegionFailoverStrategy
extends Object
implements FailoverStrategy

A failover strategy that proposes to restart involved regions when a vertex fails. A region is defined by this strategy as tasks that communicate via pipelined data exchange.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	RestartPipelinedRegionFailoverStrategy.Factory The factory to instantiate RestartPipelinedRegionFailoverStrategy.

构造器概要

构造器

构造器和说明
RestartPipelinedRegionFailoverStrategy(SchedulingTopology topology) Creates a new failover strategy to restart pipelined regions that works on the given topology.
RestartPipelinedRegionFailoverStrategy(SchedulingTopology topology, ResultPartitionAvailabilityChecker resultPartitionAvailabilityChecker) Creates a new failover strategy to restart pipelined regions that works on the given topology.

方法概要

限定符和类型	方法和说明
SchedulingPipelinedRegion	getFailoverRegion(ExecutionVertexID vertexID) Returns the failover region that contains the given execution vertex.
Set<ExecutionVertexID>	getTasksNeedingRestart(ExecutionVertexID executionVertexId, Throwable cause) Returns a set of IDs corresponding to the set of vertices that should be restarted.

从类继承的方法 java.lang.Object

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

构造器详细资料

RestartPipelinedRegionFailoverStrategy

@VisibleForTesting
public RestartPipelinedRegionFailoverStrategy(SchedulingTopology topology)

Creates a new failover strategy to restart pipelined regions that works on the given topology. The result partitions are always considered to be available if no data consumption error happens.

参数:

topology - containing info about all the vertices and result partitions

RestartPipelinedRegionFailoverStrategy

public RestartPipelinedRegionFailoverStrategy(SchedulingTopology topology,
                                              ResultPartitionAvailabilityChecker resultPartitionAvailabilityChecker)

Creates a new failover strategy to restart pipelined regions that works on the given topology.

参数:

topology - containing info about all the vertices and result partitions

resultPartitionAvailabilityChecker - helps to query result partition availability

方法详细资料

getTasksNeedingRestart

public Set<ExecutionVertexID> getTasksNeedingRestart(ExecutionVertexID executionVertexId,
                                                     Throwable cause)

Returns a set of IDs corresponding to the set of vertices that should be restarted. In this strategy, all task vertices in 'involved' regions are proposed to be restarted. The 'involved' regions are calculated with rules below: 1. The region containing the failed task is always involved 2. If an input result partition of an involved region is not available, i.e. Missing or Corrupted, the region containing the partition producer task is involved 3. If a region is involved, all of its consumer regions are involved

指定者:

getTasksNeedingRestart 在接口中 FailoverStrategy

参数:

executionVertexId - ID of the failed task

cause - cause of the failure

返回:

set of IDs of vertices to restart

getFailoverRegion

@VisibleForTesting
public SchedulingPipelinedRegion getFailoverRegion(ExecutionVertexID vertexID)

Returns the failover region that contains the given execution vertex.

返回:

the failover region that contains the given execution vertex