org.apache.flink.runtime.executiongraph

Class SpeculativeExecutionVertex

java.lang.Object

org.apache.flink.runtime.executiongraph.ExecutionVertex

org.apache.flink.runtime.executiongraph.SpeculativeExecutionVertex

All Implemented Interfaces:

org.apache.flink.api.common.Archiveable<ArchivedExecutionVertex>, AccessExecutionVertex

public class SpeculativeExecutionVertex
extends ExecutionVertex

The ExecutionVertex which supports speculative execution.

Field Summary

Fields inherited from class org.apache.flink.runtime.executiongraph.ExecutionVertex

NUM_BYTES_UNKNOWN

Constructor Summary

Constructors

Constructor and Description
SpeculativeExecutionVertex(ExecutionJobVertex jobVertex, int subTaskIndex, IntermediateResult[] producedDataSets, org.apache.flink.api.common.time.Time timeout, long createTimestamp, int executionHistorySizeLimit, int initialAttemptCount)

Method Summary

Modifier and Type	Method and Description
ArchivedExecutionVertex	archive()
void	archiveFailedExecution(ExecutionAttemptID executionAttemptId) Remove execution from currentExecutions if it is failed.
CompletableFuture<?>	cancel() Cancels this ExecutionVertex.
Execution	createNewSpeculativeExecution(long timestamp)
void	deploy()
void	deployToSlot(LogicalSlot slot)
void	fail(Throwable t)
Execution	getCurrentExecution(int attemptNumber)
Execution	getCurrentExecutionAttempt() Returns the current execution for this execution vertex.
Collection<Execution>	getCurrentExecutions() Returns the current executions for this execution vertex.
Optional<org.apache.flink.core.io.InputSplit>	getNextInputSplit(String host, int attemptNumber)
Execution	getPartitionProducer()
Optional<TaskManagerLocation>	getPreferredLocationBasedOnState() Gets the preferred location to execute the current task execution attempt, based on the state that the execution attempt will resume.
boolean	isOriginalAttempt(int attemptNumber) Returns whether the given attempt is the original execution attempt of the execution vertex, i.e. it is created along with the creation of resetting of the execution vertex.
boolean	isSupportsConcurrentExecutionAttempts()
void	markFailed(Throwable t) This method marks the task as failed, but will make no attempt to remove task execution from the task manager.
void	resetForNewExecution() Archives the current Execution and creates a new Execution for this vertex.
CompletableFuture<?>	suspend()
void	tryAssignResource(LogicalSlot slot)

Methods inherited from class org.apache.flink.runtime.executiongraph.ExecutionVertex

addConsumedPartitionGroup, findLastAllocation, findLastLocation, finishPartitionsIfNeeded, getAllConsumedPartitionGroups, getConsumedPartitionGroup, getCurrentAssignedResource, getCurrentAssignedResourceLocation, getCurrentTaskManagerLocationFuture, getExecutionGraphAccessor, getExecutionHistory, getExecutionState, getExecutionVertexInputInfo, getFailureInfo, getID, getInputBytes, getJobId, getJobVertex, getJobvertexId, getMaxParallelism, getNumberOfInputs, getParallelSubtaskIndex, getProducedPartitions, getResourceProfile, getStateTimestamp, getTaskName, getTaskNameWithSubtaskIndex, getTotalNumberOfParallelSubtasks, setInputBytes, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SpeculativeExecutionVertex

public SpeculativeExecutionVertex(ExecutionJobVertex jobVertex,
                                  int subTaskIndex,
                                  IntermediateResult[] producedDataSets,
                                  org.apache.flink.api.common.time.Time timeout,
                                  long createTimestamp,
                                  int executionHistorySizeLimit,
                                  int initialAttemptCount)

Method Detail

isSupportsConcurrentExecutionAttempts

public boolean isSupportsConcurrentExecutionAttempts()

createNewSpeculativeExecution

public Execution createNewSpeculativeExecution(long timestamp)

isOriginalAttempt

public boolean isOriginalAttempt(int attemptNumber)

Returns whether the given attempt is the original execution attempt of the execution vertex, i.e. it is created along with the creation of resetting of the execution vertex.

getCurrentExecutions

public Collection<Execution> getCurrentExecutions()

Description copied from interface: AccessExecutionVertex

Returns the current executions for this execution vertex. The returned collection must contain the current execution attempt.

Specified by:

getCurrentExecutions in interface AccessExecutionVertex

Overrides:

getCurrentExecutions in class ExecutionVertex

Returns:

current executions

getCurrentExecution

public Execution getCurrentExecution(int attemptNumber)

Overrides:

getCurrentExecution in class ExecutionVertex

getPartitionProducer

public Execution getPartitionProducer()

Overrides:

getPartitionProducer in class ExecutionVertex

cancel

public CompletableFuture<?> cancel()

Description copied from class: ExecutionVertex

Cancels this ExecutionVertex.

Overrides:

cancel in class ExecutionVertex

Returns:

A future that completes once the execution has reached its final state.

suspend

public CompletableFuture<?> suspend()

Overrides:

suspend in class ExecutionVertex

fail

public void fail(Throwable t)

Overrides:

fail in class ExecutionVertex

markFailed

public void markFailed(Throwable t)

Description copied from class: ExecutionVertex

This method marks the task as failed, but will make no attempt to remove task execution from the task manager. It is intended for cases where the task is known not to be deployed yet.

Overrides:

markFailed in class ExecutionVertex

Parameters:

t - The exception that caused the task to fail.

resetForNewExecution

public void resetForNewExecution()

Description copied from class: ExecutionVertex

Archives the current Execution and creates a new Execution for this vertex.

Overrides:

resetForNewExecution in class ExecutionVertex

archiveFailedExecution

public void archiveFailedExecution(ExecutionAttemptID executionAttemptId)

Remove execution from currentExecutions if it is failed. It is needed to make room for possible future speculative executions.

Parameters:

executionAttemptId - attemptID of the execution to be removed

getCurrentExecutionAttempt

public Execution getCurrentExecutionAttempt()

Description copied from interface: AccessExecutionVertex

Returns the current execution for this execution vertex.

Specified by:

getCurrentExecutionAttempt in interface AccessExecutionVertex

Overrides:

getCurrentExecutionAttempt in class ExecutionVertex

Returns:

current execution

getNextInputSplit

public Optional<org.apache.flink.core.io.InputSplit> getNextInputSplit(String host,
                                                                       int attemptNumber)

Overrides:

getNextInputSplit in class ExecutionVertex

archive

public ArchivedExecutionVertex archive()

Specified by:

archive in interface org.apache.flink.api.common.Archiveable<ArchivedExecutionVertex>

Overrides:

archive in class ExecutionVertex

tryAssignResource

public void tryAssignResource(LogicalSlot slot)

Overrides:

tryAssignResource in class ExecutionVertex

deploy

public void deploy()

Overrides:

deploy in class ExecutionVertex

deployToSlot

public void deployToSlot(LogicalSlot slot)

Overrides:

deployToSlot in class ExecutionVertex

getPreferredLocationBasedOnState

public Optional<TaskManagerLocation> getPreferredLocationBasedOnState()

Description copied from class: ExecutionVertex

Gets the preferred location to execute the current task execution attempt, based on the state that the execution attempt will resume.

Overrides:

getPreferredLocationBasedOnState in class ExecutionVertex