org.apache.flink.runtime.protocols

Interface JobManagerProtocol

All Superinterfaces:

VersionedProtocol

All Known Implementing Classes:

JobManager

public interface JobManagerProtocol
extends VersionedProtocol

The job manager protocol is implemented by the job manager and offers functionality to task managers which allows them to register themselves, send heart beat messages or to report the results of a task execution.

Method Summary

Methods

Modifier and Type	Method and Description
RegisterTaskManagerResult	registerTaskManager(InstanceConnectionInfo instanceConnectionInfo, HardwareDescription hardwareDescription, IntegerRecord numberOfSlots) Registers a task manager at the JobManager.
void	sendHeartbeat(InstanceConnectionInfo instanceConnectionInfo) Sends a heart beat to the job manager.
void	updateTaskExecutionState(TaskExecutionState taskExecutionState) Reports an update of a task's execution state to the job manager.

Method Detail

sendHeartbeat

void sendHeartbeat(InstanceConnectionInfo instanceConnectionInfo)
                   throws IOException

Sends a heart beat to the job manager.

Parameters:

instanceConnectionInfo - the information the job manager requires to connect to the instance's task manager

Throws:

IOException - thrown if an error occurs during this remote procedure call

registerTaskManager

RegisterTaskManagerResult registerTaskManager(InstanceConnectionInfo instanceConnectionInfo,
                                            HardwareDescription hardwareDescription,
                                            IntegerRecord numberOfSlots)
                                              throws IOException

Registers a task manager at the JobManager.

Parameters:

instanceConnectionInfo - the information the job manager requires to connect to the instance's task manager

hardwareDescription - a hardware description with details on the instance's compute resources.

Returns:

whether the task manager was successfully registered

Throws:

IOException

updateTaskExecutionState

void updateTaskExecutionState(TaskExecutionState taskExecutionState)
                              throws IOException

Reports an update of a task's execution state to the job manager.

Parameters:

taskExecutionState - the new task execution state

Throws:

IOException - thrown if an error occurs during this remote procedure call