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

类 ExecutionFailureHandler

java.lang.Object

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

public class ExecutionFailureHandler
extends Object

This handler deals with task failures to return a FailureHandlingResult which contains tasks to restart to recover from failures.

构造器概要

构造器

构造器和说明
ExecutionFailureHandler(SchedulingTopology schedulingTopology, FailoverStrategy failoverStrategy, RestartBackoffTimeStrategy restartBackoffTimeStrategy) Creates the handler to deal with task failures.

方法概要

限定符和类型	方法和说明
FailureHandlingResult	getFailureHandlingResult(ExecutionVertexID failedTask, Throwable cause, long timestamp) Return result of failure handling.
FailureHandlingResult	getGlobalFailureHandlingResult(Throwable cause, long timestamp) Return result of failure handling on a global failure.
long	getNumberOfRestarts()
static boolean	isUnrecoverableError(Throwable cause)

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

ExecutionFailureHandler

public ExecutionFailureHandler(SchedulingTopology schedulingTopology,
                               FailoverStrategy failoverStrategy,
                               RestartBackoffTimeStrategy restartBackoffTimeStrategy)

Creates the handler to deal with task failures.

参数:

schedulingTopology - contains the topology info for failover

failoverStrategy - helps to decide tasks to restart on task failures

restartBackoffTimeStrategy - helps to decide whether to restart failed tasks and the restarting delay

方法详细资料

getFailureHandlingResult

public FailureHandlingResult getFailureHandlingResult(ExecutionVertexID failedTask,
                                                      Throwable cause,
                                                      long timestamp)

Return result of failure handling. Can be a set of task vertices to restart and a delay of the restarting. Or that the failure is not recoverable and the reason for it.

参数:

failedTask - is the ID of the failed task vertex

cause - of the task failure

timestamp - of the task failure

返回:

result of the failure handling

getGlobalFailureHandlingResult

public FailureHandlingResult getGlobalFailureHandlingResult(Throwable cause,
                                                            long timestamp)

Return result of failure handling on a global failure. Can be a set of task vertices to restart and a delay of the restarting. Or that the failure is not recoverable and the reason for it.

参数:

cause - of the task failure

timestamp - of the task failure

返回:

result of the failure handling

isUnrecoverableError

public static boolean isUnrecoverableError(Throwable cause)

getNumberOfRestarts

public long getNumberOfRestarts()