org.apache.flink.runtime.instance

Class InstanceManager

java.lang.Object

org.apache.flink.runtime.instance.InstanceManager

Direct Known Subclasses:

LocalInstanceManager

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 instance manager, using the global configuration value for maximum interval between heartbeats where a task manager is still considered alive.
InstanceManager(long heartbeatTimeout)
InstanceManager(long heartbeatTimeout, long cleanupInterval)

Method Summary

Methods

Modifier and Type	Method and Description
void	addInstanceListener(InstanceListener listener)
Map<InstanceID,Instance>	getAllRegisteredInstances()
long	getHeartbeatTimeout()
int	getNumberOfRegisteredTaskManagers()
int	getTotalNumberOfSlots()
void	killTaskManagers() This method is only used by the Flink YARN client to self-destruct a Flink cluster by stopping the JVMs of the TaskManagers.
InstanceID	registerTaskManager(InstanceConnectionInfo instanceConnectionInfo, HardwareDescription resources, int numberOfSlots)
void	removeInstanceListener(InstanceListener listener)
boolean	reportHeartBeat(InstanceID instanceId)
void	shutdown()

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 instance manager, using the global configuration value for maximum interval between heartbeats where a task manager is still considered alive.

InstanceManager

public InstanceManager(long heartbeatTimeout)

InstanceManager

public InstanceManager(long heartbeatTimeout,
               long cleanupInterval)

Method Detail

getHeartbeatTimeout

public long getHeartbeatTimeout()

killTaskManagers

public void killTaskManagers()

This method is only used by the Flink YARN client to self-destruct a Flink cluster by stopping the JVMs of the TaskManagers.

shutdown

public void shutdown()

reportHeartBeat

public boolean reportHeartBeat(InstanceID instanceId)

registerTaskManager

public InstanceID registerTaskManager(InstanceConnectionInfo instanceConnectionInfo,
                             HardwareDescription resources,
                             int numberOfSlots)

getNumberOfRegisteredTaskManagers

public int getNumberOfRegisteredTaskManagers()

getTotalNumberOfSlots

public int getTotalNumberOfSlots()

getAllRegisteredInstances

public Map<InstanceID,Instance> getAllRegisteredInstances()

addInstanceListener

public void addInstanceListener(InstanceListener listener)

removeInstanceListener

public void removeInstanceListener(InstanceListener listener)