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

类 FailureHandlingResult

java.lang.Object

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

public class FailureHandlingResult
extends Object

Result containing the tasks to restart upon a task failure. Also contains the reason of the failure and the vertices to restart if the failure is recoverable (in contrast to non-recoverable failure type or restarting suppressed by restart strategy).

方法概要

限定符和类型	方法和说明
boolean	canRestart() Returns whether the restarting can be conducted.
Throwable	getError() Returns reason why the restarting cannot be conducted.
Optional<Execution>	getFailedExecution() Returns an Optional with the Execution causing this failure or an empty Optional if it's a global failure.
long	getRestartDelayMS() Returns the delay before the restarting.
long	getTimestamp() Returns the time of the failure.
Set<ExecutionVertexID>	getVerticesToRestart() Returns the tasks to restart.
boolean	isGlobalFailure() Checks if this failure was a global failure, i.e., coming from a "safety net" failover that involved all tasks and should reset also components like the coordinators.
static FailureHandlingResult	restartable(Execution failedExecution, Throwable cause, long timestamp, Set<ExecutionVertexID> verticesToRestart, long restartDelayMS, boolean globalFailure) Creates a result of a set of tasks to restart to recover from the failure.
static FailureHandlingResult	unrecoverable(Execution failedExecution, Throwable error, long timestamp, boolean globalFailure) Creates a result that the failure is not recoverable and no restarting should be conducted.

从类继承的方法 java.lang.Object

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

方法详细资料

getVerticesToRestart

public Set<ExecutionVertexID> getVerticesToRestart()

Returns the tasks to restart.

返回:

the tasks to restart

getRestartDelayMS

public long getRestartDelayMS()

Returns the delay before the restarting.

返回:

the delay before the restarting

getFailedExecution

public Optional<Execution> getFailedExecution()

Returns an Optional with the Execution causing this failure or an empty Optional if it's a global failure.

返回:

The Optional with the failed Execution or an empty Optional if it's a global failure.

getError

@Nullable
public Throwable getError()

Returns reason why the restarting cannot be conducted.

返回:

reason why the restarting cannot be conducted

getTimestamp

public long getTimestamp()

Returns the time of the failure.

返回:

The timestamp.

canRestart

public boolean canRestart()

Returns whether the restarting can be conducted.

返回:

whether the restarting can be conducted

isGlobalFailure

public boolean isGlobalFailure()

Checks if this failure was a global failure, i.e., coming from a "safety net" failover that involved all tasks and should reset also components like the coordinators.

restartable

public static FailureHandlingResult restartable(@Nullable
                                                Execution failedExecution,
                                                @Nullable
                                                Throwable cause,
                                                long timestamp,
                                                @Nullable
                                                Set<ExecutionVertexID> verticesToRestart,
                                                long restartDelayMS,
                                                boolean globalFailure)

Creates a result of a set of tasks to restart to recover from the failure.

The result can be flagged to be from a global failure triggered by the scheduler, rather than from the failure of an individual task.

参数:

failedExecution - the Execution that the failure is originating from. Passing null as a value indicates that the failure was issued by Flink itself.

cause - The reason of the failure.

timestamp - The time of the failure.

verticesToRestart - containing task vertices to restart to recover from the failure. null indicates that the failure is not restartable.

restartDelayMS - indicate a delay before conducting the restart

返回:

result of a set of tasks to restart to recover from the failure

unrecoverable

public static FailureHandlingResult unrecoverable(@Nullable
                                                  Execution failedExecution,
                                                  @Nonnull
                                                  Throwable error,
                                                  long timestamp,
                                                  boolean globalFailure)

Creates a result that the failure is not recoverable and no restarting should be conducted.

The result can be flagged to be from a global failure triggered by the scheduler, rather than from the failure of an individual task.

参数:

failedExecution - the Execution that the failure is originating from. Passing null as a value indicates that the failure was issued by Flink itself.

error - reason why the failure is not recoverable

timestamp - The time of the failure.

返回:

result indicating the failure is not recoverable