org.apache.hadoop.mapreduce.v2.hs.webapp

Class HsController

java.lang.Object

org.apache.hadoop.yarn.webapp.Controller

org.apache.hadoop.mapreduce.v2.app.webapp.AppController

org.apache.hadoop.mapreduce.v2.hs.webapp.HsController

All Implemented Interfaces:

AMParams, Params

public class HsController
extends AppController

This class renders the various pages that the History Server WebApp supports

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.yarn.webapp.Controller

Controller.RequestContext

Field Summary

Fields inherited from class org.apache.hadoop.mapreduce.v2.app.webapp.AppController

app

Fields inherited from interface org.apache.hadoop.mapreduce.v2.app.webapp.AMParams

APP_ID, ATTEMPT_STATE, COUNTER_GROUP, COUNTER_NAME, JOB_ID, RM_WEB, TASK_ID, TASK_TYPE

Fields inherited from interface org.apache.hadoop.yarn.webapp.Params

ERROR_DETAILS, TITLE, TITLE_LINK, USER

Method Summary

Methods

Modifier and Type	Method and Description
void	about() Render a page about the current server.
protected Class<? extends View>	aboutPage()
void	attempts() Render the attempts page
protected Class<? extends View>	attemptsPage()
protected Class<? extends View>	confPage()
Class<? extends View>	countersPage()
void	index() Render the default(index.html) page for the Application Controller
void	job() Render the /job page
void	jobCounters() Render the /jobcounters page
protected Class<? extends View>	jobPage()
void	logs() Render the logs page.
void	nmlogs() Render the nm logs page.
protected Class<? extends View>	singleCounterPage()
void	singleJobCounter() Render the /singlejobcounter page
void	singleTaskCounter() Render the /singletaskcounter page
void	task() Render the /task page
void	taskCounters() Display a page showing a task's counters
protected Class<? extends View>	taskPage()
void	tasks() Render the /tasks page
protected Class<? extends View>	tasksPage()

Methods inherited from class org.apache.hadoop.mapreduce.v2.app.webapp.AppController

conf, info, requireJob, requireTask

Methods inherited from class org.apache.hadoop.yarn.webapp.Controller

$, context, cookies, echo, error, get, getInstance, inDevMode, info, injector, render, renderJSON, renderJSON, renderText, request, response, set, setStatus, setTitle, setTitle, status, url, writer

Methods inherited from class java.lang.Object

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

Method Detail

index

public void index()

Description copied from class: AppController

Render the default(index.html) page for the Application Controller

Overrides:

index in class AppController

jobPage

protected Class<? extends View> jobPage()

Overrides:

jobPage in class AppController

Returns:

The class that will render the /job page

countersPage

public Class<? extends View> countersPage()

Overrides:

countersPage in class AppController

Returns:

the class that will render the /jobcounters page

tasksPage

protected Class<? extends View> tasksPage()

Overrides:

tasksPage in class AppController

Returns:

the class that will render the /tasks page

taskPage

protected Class<? extends View> taskPage()

Overrides:

taskPage in class AppController

Returns:

the class that will render the /task page

attemptsPage

protected Class<? extends View> attemptsPage()

Overrides:

attemptsPage in class AppController

Returns:

the class that will render the /attempts page

job

public void job()

Description copied from class: AppController

Render the /job page

Overrides:

job in class AppController

jobCounters

public void jobCounters()

Description copied from class: AppController

Render the /jobcounters page

Overrides:

jobCounters in class AppController

taskCounters

public void taskCounters()

Description copied from class: AppController

Display a page showing a task's counters

Overrides:

taskCounters in class AppController

tasks

public void tasks()

Description copied from class: AppController

Render the /tasks page

Overrides:

tasks in class AppController

task

public void task()

Description copied from class: AppController

Render the /task page

Overrides:

task in class AppController

attempts

public void attempts()

Description copied from class: AppController

Render the attempts page

Overrides:

attempts in class AppController

confPage

protected Class<? extends View> confPage()

Overrides:

confPage in class AppController

Returns:

the page that will be used to render the /conf page

aboutPage

protected Class<? extends View> aboutPage()

Returns:

the page about the current server.

about

public void about()

Render a page about the current server.

logs

public void logs()

Render the logs page.

nmlogs

public void nmlogs()

Render the nm logs page.

singleCounterPage

protected Class<? extends View> singleCounterPage()

Overrides:

singleCounterPage in class AppController

Returns:

the class that will render the /singlejobcounter page

singleJobCounter

public void singleJobCounter()
                      throws IOException

Description copied from class: AppController

Render the /singlejobcounter page

Overrides:

singleJobCounter in class AppController

Throws:

IOException - on any error.

singleTaskCounter

public void singleTaskCounter()
                       throws IOException

Description copied from class: AppController

Render the /singletaskcounter page

Overrides:

singleTaskCounter in class AppController

Throws:

IOException - on any error.