Package org.apache.hadoop.yarn.server.webproxy

Class AppReportFetcher

java.lang.Object

org.apache.hadoop.yarn.server.webproxy.AppReportFetcher

Direct Known Subclasses:

DefaultAppReportFetcher, FedAppReportFetcher

public abstract class AppReportFetcher
extends java.lang.Object

This class abstracts away how ApplicationReports are fetched.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	AppReportFetcher.AppReportSource
protected static class	AppReportFetcher.FetchedAppReport

Constructor Summary

Constructors

Constructor	Description
AppReportFetcher(org.apache.hadoop.conf.Configuration conf)	Create a new Connection to the RM/Application History Server to fetch Application reports.

Method Summary

Modifier and Type	Method	Description
java.lang.String	getAhsAppPageUrlBase()
protected org.apache.hadoop.yarn.api.ApplicationHistoryProtocol	getAHSProxy(org.apache.hadoop.conf.Configuration configuration)
protected AppReportFetcher.FetchedAppReport	getApplicationReport(org.apache.hadoop.yarn.api.ApplicationClientProtocol applicationsManager, org.apache.hadoop.yarn.api.records.ApplicationId appId)	Get an application report for the specified application id from the RM and fall back to the Application History Server if not found in RM.
abstract AppReportFetcher.FetchedAppReport	getApplicationReport(org.apache.hadoop.yarn.api.records.ApplicationId appId)	Get an application report for the specified application id from the RM and fall back to the Application History Server if not found in RM.
protected org.apache.hadoop.conf.Configuration	getConf()
abstract java.lang.String	getRmAppPageUrlBase(org.apache.hadoop.yarn.api.records.ApplicationId appId)
void	setHistoryManager(org.apache.hadoop.yarn.api.ApplicationHistoryProtocol historyManager)
void	stop()

Methods inherited from class java.lang.Object

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

Constructor Detail

AppReportFetcher

public AppReportFetcher(org.apache.hadoop.conf.Configuration conf)

Create a new Connection to the RM/Application History Server to fetch Application reports.

Parameters:

conf - the conf to use to know where the RM is.

Method Detail

getAHSProxy

protected org.apache.hadoop.yarn.api.ApplicationHistoryProtocol getAHSProxy(org.apache.hadoop.conf.Configuration configuration)
                                                                     throws java.io.IOException

Throws:

java.io.IOException

getApplicationReport

public abstract AppReportFetcher.FetchedAppReport getApplicationReport(org.apache.hadoop.yarn.api.records.ApplicationId appId)
                                                                throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                       java.io.IOException

Get an application report for the specified application id from the RM and fall back to the Application History Server if not found in RM.

Parameters:

appId - id of the application to get.

Returns:

the ApplicationReport for the appId.

Throws:

org.apache.hadoop.yarn.exceptions.YarnException - on any error.

java.io.IOException

getApplicationReport

protected AppReportFetcher.FetchedAppReport getApplicationReport(org.apache.hadoop.yarn.api.ApplicationClientProtocol applicationsManager,
                                                                 org.apache.hadoop.yarn.api.records.ApplicationId appId)
                                                          throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                 java.io.IOException

Get an application report for the specified application id from the RM and fall back to the Application History Server if not found in RM.

Parameters:

applicationsManager - what to use to get the RM reports.

appId - id of the application to get.

Returns:

the ApplicationReport for the appId.

Throws:

org.apache.hadoop.yarn.exceptions.YarnException - on any error.

java.io.IOException - connection exception.

getRmAppPageUrlBase

public abstract java.lang.String getRmAppPageUrlBase(org.apache.hadoop.yarn.api.records.ApplicationId appId)
                                              throws java.io.IOException,
                                                     org.apache.hadoop.yarn.exceptions.YarnException

Throws:

java.io.IOException

org.apache.hadoop.yarn.exceptions.YarnException

getAhsAppPageUrlBase

public java.lang.String getAhsAppPageUrlBase()

getConf

protected org.apache.hadoop.conf.Configuration getConf()

stop

public void stop()

setHistoryManager

@VisibleForTesting
public void setHistoryManager(org.apache.hadoop.yarn.api.ApplicationHistoryProtocol historyManager)