org.apache.flink.runtime.jobmaster

类 JobMaster

java.lang.Object

org.apache.flink.runtime.rpc.RpcEndpoint

org.apache.flink.runtime.rpc.FencedRpcEndpoint<F>

org.apache.flink.runtime.rpc.PermanentlyFencedRpcEndpoint<JobMasterId>

org.apache.flink.runtime.jobmaster.JobMaster

所有已实现的接口:

AutoCloseable, CheckpointCoordinatorGateway, JobMasterGateway, JobMasterOperatorEventGateway, JobMasterService, KvStateLocationOracle, KvStateRegistryGateway, org.apache.flink.runtime.rpc.FencedRpcGateway<JobMasterId>, org.apache.flink.runtime.rpc.RpcGateway, org.apache.flink.util.AutoCloseableAsync

public class JobMaster
extends org.apache.flink.runtime.rpc.PermanentlyFencedRpcEndpoint<JobMasterId>
implements JobMasterGateway, JobMasterService

JobMaster implementation. The job master is responsible for the execution of a single JobGraph.

It offers the following methods as part of its rpc interface to interact with the JobMaster remotely:

• updateTaskExecutionState(org.apache.flink.runtime.taskmanager.TaskExecutionState) updates the task execution state for given task

嵌套类概要

从类继承的嵌套类/接口 org.apache.flink.runtime.rpc.RpcEndpoint

org.apache.flink.runtime.rpc.RpcEndpoint.MainThreadExecutor

字段概要

字段

限定符和类型	字段和说明
static String	JOB_MANAGER_NAME Default names for Flink's distributed components.

从类继承的字段 org.apache.flink.runtime.rpc.RpcEndpoint

log, rpcServer

构造器概要

构造器

构造器和说明

JobMaster(org.apache.flink.runtime.rpc.RpcService rpcService, JobMasterId jobMasterId, JobMasterConfiguration jobMasterConfiguration, ResourceID resourceId, JobGraph jobGraph, HighAvailabilityServices highAvailabilityService, SlotPoolServiceSchedulerFactory slotPoolServiceSchedulerFactory, JobManagerSharedServices jobManagerSharedServices, HeartbeatServices heartbeatServices, JobManagerJobMetricGroupFactory jobMetricGroupFactory, OnCompletionActions jobCompletionActions, org.apache.flink.runtime.rpc.FatalErrorHandler fatalErrorHandler, ClassLoader userCodeLoader, ShuffleMaster<?> shuffleMaster, PartitionTrackerFactory partitionTrackerFactory, ExecutionDeploymentTracker executionDeploymentTracker, ExecutionDeploymentReconciler.Factory executionDeploymentReconcilerFactory, long initializationTimestamp)

方法概要

限定符和类型	方法和说明
void	acknowledgeCheckpoint(org.apache.flink.api.common.JobID jobID, ExecutionAttemptID executionAttemptID, long checkpointId, CheckpointMetrics checkpointMetrics, org.apache.flink.util.SerializedValue<TaskStateSnapshot> checkpointState)
CompletableFuture<Acknowledge>	cancel(org.apache.flink.api.common.time.Time timeout) Cancels the currently executed job.
void	declineCheckpoint(DeclineCheckpoint decline)
CompletableFuture<CoordinationResponse>	deliverCoordinationRequestToCoordinator(OperatorID operatorId, org.apache.flink.util.SerializedValue<CoordinationRequest> serializedRequest, org.apache.flink.api.common.time.Time timeout) Deliver a coordination request to a specified coordinator and return the response.
void	disconnectResourceManager(ResourceManagerId resourceManagerId, Exception cause) Disconnects the resource manager from the job manager because of the given cause.
CompletableFuture<Acknowledge>	disconnectTaskManager(ResourceID resourceID, Exception cause) Disconnects the given TaskExecutor from the JobMaster.
void	failSlot(ResourceID taskManagerId, AllocationID allocationId, Exception cause) Fails the slot with the given allocation id and cause.
JobMasterGateway	getGateway() Get the JobMasterGateway belonging to this service.
CompletableFuture<Void>	heartbeatFromResourceManager(ResourceID resourceID) Sends heartbeat request from the resource manager.
CompletableFuture<Void>	heartbeatFromTaskManager(ResourceID resourceID, TaskExecutorToJobManagerHeartbeatPayload payload) Sends the heartbeat to job manager from task manager.
void	notifyAllocationFailure(AllocationID allocationID, Exception cause) Notifies that the allocation has failed.
CompletableFuture<Acknowledge>	notifyKvStateRegistered(org.apache.flink.api.common.JobID jobId, JobVertexID jobVertexId, KeyGroupRange keyGroupRange, String registrationName, org.apache.flink.queryablestate.KvStateID kvStateId, InetSocketAddress kvStateServerAddress) Notifies that queryable state has been registered.
CompletableFuture<Acknowledge>	notifyKvStateUnregistered(org.apache.flink.api.common.JobID jobId, JobVertexID jobVertexId, KeyGroupRange keyGroupRange, String registrationName) Notifies that queryable state has been unregistered.
void	notifyNotEnoughResourcesAvailable(Collection<ResourceRequirement> acquiredResources) Notifies that not enough resources are available to fulfill the resource requirements of a job.
CompletableFuture<Acknowledge>	notifyPartitionDataAvailable(ResultPartitionID partitionID, org.apache.flink.api.common.time.Time timeout) Notifies the JobManager about available data for a produced partition.
CompletableFuture<Collection<SlotOffer>>	offerSlots(ResourceID taskManagerId, Collection<SlotOffer> slots, org.apache.flink.api.common.time.Time timeout) Offers the given slots to the job manager.
protected void	onStart()
CompletableFuture<Void>	onStop() Suspend the job and shutdown all other services including rpc.
CompletableFuture<RegistrationResponse>	registerTaskManager(org.apache.flink.api.common.JobID jobId, TaskManagerRegistrationInformation taskManagerRegistrationInformation, org.apache.flink.api.common.time.Time timeout) Registers the task manager at the job manager.
void	reportCheckpointMetrics(org.apache.flink.api.common.JobID jobID, ExecutionAttemptID executionAttemptID, long checkpointId, CheckpointMetrics checkpointMetrics)
CompletableFuture<ExecutionGraphInfo>	requestJob(org.apache.flink.api.common.time.Time timeout) Requests the ExecutionGraphInfo of the executed job.
CompletableFuture<JobDetails>	requestJobDetails(org.apache.flink.api.common.time.Time timeout) Request the details of the executed job.
CompletableFuture<org.apache.flink.api.common.JobStatus>	requestJobStatus(org.apache.flink.api.common.time.Time timeout) Requests the current job status.
CompletableFuture<KvStateLocation>	requestKvStateLocation(org.apache.flink.api.common.JobID jobId, String registrationName) Requests a KvStateLocation for the specified InternalKvState registration name.
CompletableFuture<SerializedInputSplit>	requestNextInputSplit(JobVertexID vertexID, ExecutionAttemptID executionAttempt) Requests the next input split for the ExecutionJobVertex.
CompletableFuture<ExecutionState>	requestPartitionState(IntermediateDataSetID intermediateResultId, ResultPartitionID resultPartitionId) Requests the current state of the partition.
CompletableFuture<Acknowledge>	sendOperatorEventToCoordinator(ExecutionAttemptID task, OperatorID operatorID, org.apache.flink.util.SerializedValue<OperatorEvent> serializedEvent)
CompletableFuture<CoordinationResponse>	sendRequestToCoordinator(OperatorID operatorID, org.apache.flink.util.SerializedValue<CoordinationRequest> serializedRequest)
CompletableFuture<?>	stopTrackingAndReleasePartitions(Collection<ResultPartitionID> partitionIds) Notifies the JobMasterPartitionTracker to stop tracking the target result partitions and release the locally occupied resources on TaskExecutors if any.
CompletableFuture<String>	stopWithSavepoint(String targetDirectory, org.apache.flink.core.execution.SavepointFormatType formatType, boolean terminate, org.apache.flink.api.common.time.Time timeout) Stops the job with a savepoint.
CompletableFuture<String>	triggerCheckpoint(org.apache.flink.api.common.time.Time timeout) Triggers taking a checkpoint of the executed job.
CompletableFuture<String>	triggerSavepoint(String targetDirectory, boolean cancelJob, org.apache.flink.core.execution.SavepointFormatType formatType, org.apache.flink.api.common.time.Time timeout) Triggers taking a savepoint of the executed job.
CompletableFuture<Object>	updateGlobalAggregate(String aggregateName, Object aggregand, byte[] serializedAggregateFunction) Update the aggregate and return the new value.
CompletableFuture<Acknowledge>	updateTaskExecutionState(TaskExecutionState taskExecutionState) Updates the task execution state for a given task.

从类继承的方法 org.apache.flink.runtime.rpc.PermanentlyFencedRpcEndpoint

setFencingToken

从类继承的方法 org.apache.flink.runtime.rpc.FencedRpcEndpoint

callAsyncWithoutFencing, getFencingToken, getMainThreadExecutor, getUnfencedMainThreadExecutor, runAsyncWithoutFencing

从类继承的方法 org.apache.flink.runtime.rpc.RpcEndpoint

callAsync, closeAsync, getAddress, getEndpointId, getHostname, getRpcService, getSelfGateway, getTerminationFuture, internalCallOnStart, internalCallOnStop, isRunning, runAsync, scheduleRunAsync, scheduleRunAsync, start, stop, validateRunsInMainThread

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.runtime.rpc.FencedRpcGateway

getFencingToken

从接口继承的方法 org.apache.flink.runtime.rpc.RpcGateway

getAddress, getHostname

从接口继承的方法 org.apache.flink.runtime.jobmaster.JobMasterService

getAddress, getTerminationFuture

从接口继承的方法 org.apache.flink.util.AutoCloseableAsync

close, closeAsync

字段详细资料

JOB_MANAGER_NAME

public static final String JOB_MANAGER_NAME

Default names for Flink's distributed components.

另请参阅:

常量字段值

构造器详细资料

JobMaster

public JobMaster(org.apache.flink.runtime.rpc.RpcService rpcService,
                 JobMasterId jobMasterId,
                 JobMasterConfiguration jobMasterConfiguration,
                 ResourceID resourceId,
                 JobGraph jobGraph,
                 HighAvailabilityServices highAvailabilityService,
                 SlotPoolServiceSchedulerFactory slotPoolServiceSchedulerFactory,
                 JobManagerSharedServices jobManagerSharedServices,
                 HeartbeatServices heartbeatServices,
                 JobManagerJobMetricGroupFactory jobMetricGroupFactory,
                 OnCompletionActions jobCompletionActions,
                 org.apache.flink.runtime.rpc.FatalErrorHandler fatalErrorHandler,
                 ClassLoader userCodeLoader,
                 ShuffleMaster<?> shuffleMaster,
                 PartitionTrackerFactory partitionTrackerFactory,
                 ExecutionDeploymentTracker executionDeploymentTracker,
                 ExecutionDeploymentReconciler.Factory executionDeploymentReconcilerFactory,
                 long initializationTimestamp)
          throws Exception

抛出:

Exception

方法详细资料

onStart

protected void onStart()
                throws JobMasterException

覆盖:

onStart 在类中 org.apache.flink.runtime.rpc.RpcEndpoint

抛出:

JobMasterException

onStop

public CompletableFuture<Void> onStop()

Suspend the job and shutdown all other services including rpc.

覆盖:

onStop 在类中 org.apache.flink.runtime.rpc.RpcEndpoint

cancel

public CompletableFuture<Acknowledge> cancel(org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Cancels the currently executed job.

指定者:

cancel 在接口中 JobMasterGateway

参数:

timeout - of this operation

返回:

Future acknowledge of the operation

updateTaskExecutionState

public CompletableFuture<Acknowledge> updateTaskExecutionState(TaskExecutionState taskExecutionState)

Updates the task execution state for a given task.

指定者:

updateTaskExecutionState 在接口中 JobMasterGateway

参数:

taskExecutionState - New task execution state for a given task

返回:

Acknowledge the task execution state update

requestNextInputSplit

public CompletableFuture<SerializedInputSplit> requestNextInputSplit(JobVertexID vertexID,
                                                                     ExecutionAttemptID executionAttempt)

从接口复制的说明: JobMasterGateway

Requests the next input split for the ExecutionJobVertex. The next input split is sent back to the sender as a SerializedInputSplit message.

指定者:

requestNextInputSplit 在接口中 JobMasterGateway

参数:

vertexID - The job vertex id

executionAttempt - The execution attempt id

返回:

The future of the input split. If there is no further input split, will return an empty object.

requestPartitionState

public CompletableFuture<ExecutionState> requestPartitionState(IntermediateDataSetID intermediateResultId,
                                                               ResultPartitionID resultPartitionId)

从接口复制的说明: JobMasterGateway

Requests the current state of the partition. The state of a partition is currently bound to the state of the producing execution.

指定者:

requestPartitionState 在接口中 JobMasterGateway

参数:

intermediateResultId - The execution attempt ID of the task requesting the partition state.

resultPartitionId - The partition ID of the partition to request the state of.

返回:

The future of the partition state

notifyPartitionDataAvailable

public CompletableFuture<Acknowledge> notifyPartitionDataAvailable(ResultPartitionID partitionID,
                                                                   org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Notifies the JobManager about available data for a produced partition.

There is a call to this method for each ExecutionVertex instance once per produced ResultPartition instance, either when first producing data (for pipelined executions) or when all data has been produced (for staged executions).

The JobManager then can decide when to schedule the partition consumers of the given session.

指定者:

notifyPartitionDataAvailable 在接口中 JobMasterGateway

参数:

partitionID - The partition which has already produced data

timeout - before the rpc call fails

返回:

Future acknowledge of the notification

disconnectTaskManager

public CompletableFuture<Acknowledge> disconnectTaskManager(ResourceID resourceID,
                                                            Exception cause)

从接口复制的说明: JobMasterGateway

Disconnects the given TaskExecutor from the JobMaster.

指定者:

disconnectTaskManager 在接口中 JobMasterGateway

参数:

resourceID - identifying the TaskManager to disconnect

cause - for the disconnection of the TaskManager

返回:

Future acknowledge once the JobMaster has been disconnected from the TaskManager

acknowledgeCheckpoint

public void acknowledgeCheckpoint(org.apache.flink.api.common.JobID jobID,
                                  ExecutionAttemptID executionAttemptID,
                                  long checkpointId,
                                  CheckpointMetrics checkpointMetrics,
                                  @Nullable
                                  org.apache.flink.util.SerializedValue<TaskStateSnapshot> checkpointState)

指定者:

acknowledgeCheckpoint 在接口中 CheckpointCoordinatorGateway

reportCheckpointMetrics

public void reportCheckpointMetrics(org.apache.flink.api.common.JobID jobID,
                                    ExecutionAttemptID executionAttemptID,
                                    long checkpointId,
                                    CheckpointMetrics checkpointMetrics)

指定者:

reportCheckpointMetrics 在接口中 CheckpointCoordinatorGateway

declineCheckpoint

public void declineCheckpoint(DeclineCheckpoint decline)

指定者:

declineCheckpoint 在接口中 CheckpointCoordinatorGateway

sendOperatorEventToCoordinator

public CompletableFuture<Acknowledge> sendOperatorEventToCoordinator(ExecutionAttemptID task,
                                                                     OperatorID operatorID,
                                                                     org.apache.flink.util.SerializedValue<OperatorEvent> serializedEvent)

指定者:

sendOperatorEventToCoordinator 在接口中 JobMasterOperatorEventGateway

sendRequestToCoordinator

public CompletableFuture<CoordinationResponse> sendRequestToCoordinator(OperatorID operatorID,
                                                                        org.apache.flink.util.SerializedValue<CoordinationRequest> serializedRequest)

指定者:

sendRequestToCoordinator 在接口中 JobMasterOperatorEventGateway

requestKvStateLocation

public CompletableFuture<KvStateLocation> requestKvStateLocation(org.apache.flink.api.common.JobID jobId,
                                                                 String registrationName)

从接口复制的说明: KvStateLocationOracle

Requests a KvStateLocation for the specified InternalKvState registration name.

指定者:

requestKvStateLocation 在接口中 KvStateLocationOracle

参数:

jobId - identifying the job for which to request the KvStateLocation

registrationName - Name under which the KvState has been registered.

返回:

Future of the requested InternalKvState location

notifyKvStateRegistered

public CompletableFuture<Acknowledge> notifyKvStateRegistered(org.apache.flink.api.common.JobID jobId,
                                                              JobVertexID jobVertexId,
                                                              KeyGroupRange keyGroupRange,
                                                              String registrationName,
                                                              org.apache.flink.queryablestate.KvStateID kvStateId,
                                                              InetSocketAddress kvStateServerAddress)

从接口复制的说明: KvStateRegistryGateway

Notifies that queryable state has been registered.

指定者:

notifyKvStateRegistered 在接口中 KvStateRegistryGateway

参数:

jobId - identifying the job for which to register a key value state

jobVertexId - JobVertexID the KvState instance belongs to.

keyGroupRange - Key group range the KvState instance belongs to.

registrationName - Name under which the KvState has been registered.

kvStateId - ID of the registered KvState instance.

kvStateServerAddress - Server address where to find the KvState instance.

返回:

Future acknowledge if the key-value state has been registered

notifyKvStateUnregistered

public CompletableFuture<Acknowledge> notifyKvStateUnregistered(org.apache.flink.api.common.JobID jobId,
                                                                JobVertexID jobVertexId,
                                                                KeyGroupRange keyGroupRange,
                                                                String registrationName)

从接口复制的说明: KvStateRegistryGateway

Notifies that queryable state has been unregistered.

指定者:

notifyKvStateUnregistered 在接口中 KvStateRegistryGateway

参数:

jobId - identifying the job for which to unregister a key value state

jobVertexId - JobVertexID the KvState instance belongs to.

keyGroupRange - Key group index the KvState instance belongs to.

registrationName - Name under which the KvState has been registered.

返回:

Future acknowledge if the key-value state has been unregistered

offerSlots

public CompletableFuture<Collection<SlotOffer>> offerSlots(ResourceID taskManagerId,
                                                           Collection<SlotOffer> slots,
                                                           org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Offers the given slots to the job manager. The response contains the set of accepted slots.

指定者:

offerSlots 在接口中 JobMasterGateway

参数:

taskManagerId - identifying the task manager

slots - to offer to the job manager

timeout - for the rpc call

返回:

Future set of accepted slots.

failSlot

public void failSlot(ResourceID taskManagerId,
                     AllocationID allocationId,
                     Exception cause)

从接口复制的说明: JobMasterGateway

Fails the slot with the given allocation id and cause.

指定者:

failSlot 在接口中 JobMasterGateway

参数:

taskManagerId - identifying the task manager

allocationId - identifying the slot to fail

cause - of the failing

registerTaskManager

public CompletableFuture<RegistrationResponse> registerTaskManager(org.apache.flink.api.common.JobID jobId,
                                                                   TaskManagerRegistrationInformation taskManagerRegistrationInformation,
                                                                   org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Registers the task manager at the job manager.

指定者:

registerTaskManager 在接口中 JobMasterGateway

参数:

jobId - jobId specifying the job for which the JobMaster should be responsible

taskManagerRegistrationInformation - the information for registering a task manager at the job manager

timeout - for the rpc call

返回:

Future registration response indicating whether the registration was successful or not

disconnectResourceManager

public void disconnectResourceManager(ResourceManagerId resourceManagerId,
                                      Exception cause)

从接口复制的说明: JobMasterGateway

Disconnects the resource manager from the job manager because of the given cause.

指定者:

disconnectResourceManager 在接口中 JobMasterGateway

参数:

resourceManagerId - identifying the resource manager leader id

cause - of the disconnect

heartbeatFromTaskManager

public CompletableFuture<Void> heartbeatFromTaskManager(ResourceID resourceID,
                                                        TaskExecutorToJobManagerHeartbeatPayload payload)

从接口复制的说明: JobMasterGateway

Sends the heartbeat to job manager from task manager.

指定者:

heartbeatFromTaskManager 在接口中 JobMasterGateway

参数:

resourceID - unique id of the task manager

payload - report payload

返回:

future which is completed exceptionally if the operation fails

heartbeatFromResourceManager

public CompletableFuture<Void> heartbeatFromResourceManager(ResourceID resourceID)

从接口复制的说明: JobMasterGateway

Sends heartbeat request from the resource manager.

指定者:

heartbeatFromResourceManager 在接口中 JobMasterGateway

参数:

resourceID - unique id of the resource manager

返回:

future which is completed exceptionally if the operation fails

requestJobDetails

public CompletableFuture<JobDetails> requestJobDetails(org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Request the details of the executed job.

指定者:

requestJobDetails 在接口中 JobMasterGateway

参数:

timeout - for the rpc call

返回:

Future details of the executed job

requestJobStatus

public CompletableFuture<org.apache.flink.api.common.JobStatus> requestJobStatus(org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Requests the current job status.

指定者:

requestJobStatus 在接口中 JobMasterGateway

参数:

timeout - for the rpc call

返回:

Future containing the current job status

requestJob

public CompletableFuture<ExecutionGraphInfo> requestJob(org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Requests the ExecutionGraphInfo of the executed job.

指定者:

requestJob 在接口中 JobMasterGateway

参数:

timeout - for the rpc call

返回:

Future which is completed with the ExecutionGraphInfo of the executed job

triggerSavepoint

public CompletableFuture<String> triggerSavepoint(@Nullable
                                                  String targetDirectory,
                                                  boolean cancelJob,
                                                  org.apache.flink.core.execution.SavepointFormatType formatType,
                                                  org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Triggers taking a savepoint of the executed job.

指定者:

triggerSavepoint 在接口中 JobMasterGateway

参数:

targetDirectory - to which to write the savepoint data or null if the default savepoint directory should be used

formatType - binary format for the savepoint

timeout - for the rpc call

返回:

Future which is completed with the savepoint path once completed

triggerCheckpoint

public CompletableFuture<String> triggerCheckpoint(org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Triggers taking a checkpoint of the executed job.

指定者:

triggerCheckpoint 在接口中 JobMasterGateway

参数:

timeout - for the rpc call

返回:

Future which is completed with the checkpoint path once completed

stopWithSavepoint

public CompletableFuture<String> stopWithSavepoint(@Nullable
                                                   String targetDirectory,
                                                   org.apache.flink.core.execution.SavepointFormatType formatType,
                                                   boolean terminate,
                                                   org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Stops the job with a savepoint.

指定者:

stopWithSavepoint 在接口中 JobMasterGateway

参数:

targetDirectory - to which to write the savepoint data or null if the default savepoint directory should be used

terminate - flag indicating if the job should terminate or just suspend

timeout - for the rpc call

返回:

Future which is completed with the savepoint path once completed

notifyAllocationFailure

public void notifyAllocationFailure(AllocationID allocationID,
                                    Exception cause)

从接口复制的说明: JobMasterGateway

Notifies that the allocation has failed.

指定者:

notifyAllocationFailure 在接口中 JobMasterGateway

参数:

allocationID - the failed allocation id.

cause - the reason that the allocation failed

notifyNotEnoughResourcesAvailable

public void notifyNotEnoughResourcesAvailable(Collection<ResourceRequirement> acquiredResources)

从接口复制的说明: JobMasterGateway

Notifies that not enough resources are available to fulfill the resource requirements of a job.

指定者:

notifyNotEnoughResourcesAvailable 在接口中 JobMasterGateway

参数:

acquiredResources - the resources that have been acquired for the job

updateGlobalAggregate

public CompletableFuture<Object> updateGlobalAggregate(String aggregateName,
                                                       Object aggregand,
                                                       byte[] serializedAggregateFunction)

从接口复制的说明: JobMasterGateway

Update the aggregate and return the new value.

指定者:

updateGlobalAggregate 在接口中 JobMasterGateway

参数:

aggregateName - The name of the aggregate to update

aggregand - The value to add to the aggregate

serializedAggregateFunction - The function to apply to the current aggregate and aggregand to obtain the new aggregate value, this should be of type AggregateFunction

返回:

The updated aggregate

deliverCoordinationRequestToCoordinator

public CompletableFuture<CoordinationResponse> deliverCoordinationRequestToCoordinator(OperatorID operatorId,
                                                                                       org.apache.flink.util.SerializedValue<CoordinationRequest> serializedRequest,
                                                                                       org.apache.flink.api.common.time.Time timeout)

从接口复制的说明: JobMasterGateway

Deliver a coordination request to a specified coordinator and return the response.

指定者:

deliverCoordinationRequestToCoordinator 在接口中 JobMasterGateway

参数:

operatorId - identifying the coordinator to receive the request

serializedRequest - serialized request to deliver

返回:

A future containing the response. The response will fail with a FlinkException if the task is not running, or no operator/coordinator exists for the given ID, or the coordinator cannot handle client events.

stopTrackingAndReleasePartitions

public CompletableFuture<?> stopTrackingAndReleasePartitions(Collection<ResultPartitionID> partitionIds)

从接口复制的说明: JobMasterGateway

Notifies the JobMasterPartitionTracker to stop tracking the target result partitions and release the locally occupied resources on TaskExecutors if any.

指定者:

stopTrackingAndReleasePartitions 在接口中 JobMasterGateway

getGateway

public JobMasterGateway getGateway()

从接口复制的说明: JobMasterService

Get the JobMasterGateway belonging to this service.

指定者:

getGateway 在接口中 JobMasterService

返回:

JobMasterGateway belonging to this service