org.apache.hadoop.yarn.server.webproxy

Class DefaultAppReportFetcher

java.lang.Object

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

org.apache.hadoop.yarn.server.webproxy.DefaultAppReportFetcher

public class DefaultAppReportFetcher
extends AppReportFetcher

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.yarn.server.webproxy.AppReportFetcher

AppReportFetcher.AppReportSource, AppReportFetcher.FetchedAppReport

Constructor Summary

Constructors

Constructor and Description
DefaultAppReportFetcher(org.apache.hadoop.conf.Configuration conf) Create a new Connection to the RM/Application History Server to fetch Application reports.
DefaultAppReportFetcher(org.apache.hadoop.conf.Configuration conf, org.apache.hadoop.yarn.api.ApplicationClientProtocol applicationsManager) Create a direct connection to RM instead of a remote connection when the proxy is running as part of the RM.

Method Summary

Modifier and Type	Method and Description
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.
String	getRmAppPageUrlBase(org.apache.hadoop.yarn.api.records.ApplicationId appId)
void	stop()

Methods inherited from class org.apache.hadoop.yarn.server.webproxy.AppReportFetcher

getAhsAppPageUrlBase, getAHSProxy, getApplicationReport, getConf, setHistoryManager

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultAppReportFetcher

public DefaultAppReportFetcher(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.

DefaultAppReportFetcher

public DefaultAppReportFetcher(org.apache.hadoop.conf.Configuration conf,
                               org.apache.hadoop.yarn.api.ApplicationClientProtocol applicationsManager)

Create a direct connection to RM instead of a remote connection when the proxy is running as part of the RM. Also create a remote connection to Application History Server if it is enabled.

Parameters:

conf - the configuration to use

applicationsManager - what to use to get the RM reports.

Method Detail

getApplicationReport

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

Specified by:

getApplicationReport in class AppReportFetcher

Parameters:

appId - id of the application to get.

Returns:

the ApplicationReport for the appId.

Throws:

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

IOException - connection exception.

getRmAppPageUrlBase

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

Specified by:

getRmAppPageUrlBase in class AppReportFetcher

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

stop

public void stop()

Overrides:

stop in class AppReportFetcher