org.apache.flink.runtime.instance

Class InstanceManager

java.lang.Object

org.apache.flink.runtime.instance.InstanceManager

public class InstanceManager
extends Object

Simple manager that keeps track of which TaskManager are available and alive.

Constructor Summary

Constructors

Constructor and Description
InstanceManager() Creates an new instance manager.

Method Summary

Modifier and Type	Method and Description
void	addInstanceListener(InstanceListener listener)
Collection<Instance>	getAllRegisteredInstances()
int	getNumberOfAvailableSlots()
int	getNumberOfRegisteredTaskManagers()
Instance	getRegisteredInstance(ResourceID ref)
Instance	getRegisteredInstanceById(InstanceID instanceID)
int	getTotalNumberOfSlots()
boolean	isRegistered(InstanceID instanceId)
boolean	isRegistered(ResourceID resourceId)
InstanceID	registerTaskManager(TaskManagerGateway taskManagerGateway, TaskManagerLocation taskManagerLocation, HardwareDescription resources, int numberOfSlots) Registers a task manager.
void	removeInstanceListener(InstanceListener listener)
boolean	reportHeartBeat(InstanceID instanceId)
void	shutdown()
void	unregisterAllTaskManagers() Unregisters all currently registered TaskManagers from the InstanceManager.
void	unregisterTaskManager(InstanceID instanceId, boolean terminated) Unregisters the TaskManager with the given instance id.

Methods inherited from class java.lang.Object

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

Constructor Detail

InstanceManager

public InstanceManager()

Creates an new instance manager.

Method Detail

shutdown

public void shutdown()

reportHeartBeat

public boolean reportHeartBeat(InstanceID instanceId)

registerTaskManager

public InstanceID registerTaskManager(TaskManagerGateway taskManagerGateway,
                                      TaskManagerLocation taskManagerLocation,
                                      HardwareDescription resources,
                                      int numberOfSlots)

Registers a task manager. Registration of a task manager makes it available to be used for the job execution.

Parameters:

taskManagerGateway - gateway to the task manager

taskManagerLocation - Location info of the TaskManager

resources - Hardware description of the TaskManager

numberOfSlots - Number of available slots on the TaskManager

Returns:

The assigned InstanceID of the registered task manager

unregisterTaskManager

public void unregisterTaskManager(InstanceID instanceId,
                                  boolean terminated)

Unregisters the TaskManager with the given instance id. Unregistering means to mark the given instance as dead and notify InstanceListener about the dead instance.

Parameters:

instanceId - TaskManager which is about to be marked dead.

unregisterAllTaskManagers

public void unregisterAllTaskManagers()

Unregisters all currently registered TaskManagers from the InstanceManager.

isRegistered

public boolean isRegistered(InstanceID instanceId)

isRegistered

public boolean isRegistered(ResourceID resourceId)

getNumberOfRegisteredTaskManagers

public int getNumberOfRegisteredTaskManagers()

getTotalNumberOfSlots

public int getTotalNumberOfSlots()

getNumberOfAvailableSlots

public int getNumberOfAvailableSlots()

getAllRegisteredInstances

public Collection<Instance> getAllRegisteredInstances()

getRegisteredInstanceById

public Instance getRegisteredInstanceById(InstanceID instanceID)

getRegisteredInstance

public Instance getRegisteredInstance(ResourceID ref)

addInstanceListener

public void addInstanceListener(InstanceListener listener)

removeInstanceListener

public void removeInstanceListener(InstanceListener listener)