Package org.apache.hadoop.yarn.server.globalpolicygenerator

Class GlobalPolicyGenerator

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.service.CompositeService

org.apache.hadoop.yarn.server.globalpolicygenerator.GlobalPolicyGenerator

All Implemented Interfaces:

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

public class GlobalPolicyGenerator
extends org.apache.hadoop.service.CompositeService

Global Policy Generator (GPG) is a Yarn Federation component. By tuning the Federation policies in Federation State Store, GPG overlooks the entire federated cluster and ensures that the system is tuned and balanced all the time. The GPG operates continuously but out-of-band from all cluster operations, that allows to enforce global invariants, affect load balancing, trigger draining of sub-clusters that will undergo maintenance, etc.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.service.CompositeService

org.apache.hadoop.service.CompositeService.CompositeServiceShutdownHook

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

org.apache.hadoop.service.Service.STATE

Field Summary

Fields

Modifier and Type	Field	Description
static org.slf4j.Logger	LOG
static int	SHUTDOWN_HOOK_PRIORITY

Fields inherited from class org.apache.hadoop.service.CompositeService

STOP_ONLY_STARTED_SERVICES

Constructor Summary

Constructors

Constructor	Description
GlobalPolicyGenerator()

Method Summary

Modifier and Type	Method	Description
protected void	doSecureLogin()
GPGContext	getGPGContext()
static long	getGPGStartupTime()
java.lang.String	getName()
org.apache.hadoop.yarn.webapp.WebApp	getWebApp()
protected void	initAndStart(org.apache.hadoop.conf.Configuration conf, boolean hasToReboot)
static void	main(java.lang.String[] argv)
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)
protected void	serviceStart()
protected void	serviceStop()
void	setConfig(org.apache.hadoop.conf.Configuration conf)
static void	startGPG(java.lang.String[] argv, org.apache.hadoop.conf.Configuration conf)
void	startWepApp()

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

addIfService, addService, getServices, removeService

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

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

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.slf4j.Logger LOG

SHUTDOWN_HOOK_PRIORITY

public static final int SHUTDOWN_HOOK_PRIORITY

See Also:

Constant Field Values

Constructor Detail

GlobalPolicyGenerator

public GlobalPolicyGenerator()

Method Detail

doSecureLogin

protected void doSecureLogin()
                      throws java.io.IOException

Throws:

java.io.IOException

initAndStart

protected void initAndStart(org.apache.hadoop.conf.Configuration conf,
                            boolean hasToReboot)

serviceInit

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

Overrides:

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

Throws:

java.lang.Exception

serviceStart

protected void serviceStart()
                     throws java.lang.Exception

Overrides:

serviceStart in class org.apache.hadoop.service.CompositeService

Throws:

java.lang.Exception

serviceStop

protected void serviceStop()
                    throws java.lang.Exception

Overrides:

serviceStop in class org.apache.hadoop.service.CompositeService

Throws:

java.lang.Exception

getName

public java.lang.String getName()

Specified by:

getName in interface org.apache.hadoop.service.Service

Overrides:

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

getGPGContext

public GPGContext getGPGContext()

startWepApp

@VisibleForTesting
public void startWepApp()

startGPG

public static void startGPG(java.lang.String[] argv,
                            org.apache.hadoop.conf.Configuration conf)

main

public static void main(java.lang.String[] argv)

getGPGStartupTime

public static long getGPGStartupTime()

getWebApp

@VisibleForTesting
public org.apache.hadoop.yarn.webapp.WebApp getWebApp()

setConfig

public void setConfig(org.apache.hadoop.conf.Configuration conf)

Overrides:

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