Package org.apache.hadoop.hdfs.server.federation.router

Class RouterHeartbeatService

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.hdfs.server.federation.router.PeriodicService

org.apache.hadoop.hdfs.server.federation.router.RouterHeartbeatService

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.service.Service

public class RouterHeartbeatService
extends PeriodicService

Service to periodically update the Router current state in the State Store.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.service.Service

org.apache.hadoop.service.Service.STATE

Constructor Summary

Constructors

Constructor	Description
RouterHeartbeatService(Router router)	Create a new Router heartbeat service.

Method Summary

Modifier and Type	Method	Description
void	periodicInvoke()	Method that the service will run periodically.
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)
protected void	updateStateAsync()	Trigger the update of the Router state asynchronously.

Methods inherited from class org.apache.hadoop.hdfs.server.federation.router.PeriodicService

getErrorCount, getIntervalMs, getLastUpdate, getRunCount, serviceStart, serviceStop, setIntervalMs, startPeriodic, stopPeriodic

Methods inherited from class org.apache.hadoop.service.AbstractService

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Constructor Detail

RouterHeartbeatService

public RouterHeartbeatService(Router router)

Create a new Router heartbeat service.

Parameters:

router - Router to heartbeat.

Method Detail

updateStateAsync

protected void updateStateAsync()

Trigger the update of the Router state asynchronously.

serviceInit

protected void serviceInit(org.apache.hadoop.conf.Configuration conf)
                    throws java.lang.Exception

Overrides:

serviceInit in class org.apache.hadoop.service.AbstractService

Throws:

java.lang.Exception

periodicInvoke

public void periodicInvoke()

Description copied from class: PeriodicService

Method that the service will run periodically.

Specified by:

periodicInvoke in class PeriodicService