org.apache.hadoop.yarn.client.api

Class AHSClient

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.yarn.client.api.AHSClient

All Implemented Interfaces:

Closeable, AutoCloseable, Service

@InterfaceAudience.Public
 @InterfaceStability.Stable
public abstract class AHSClient
extends AbstractService

Constructor Summary

Constructors

Constructor and Description
AHSClient(String name)

Method Summary

Modifier and Type	Method and Description
static AHSClient	createAHSClient() Create a new instance of AHSClient.
abstract ApplicationAttemptReport	getApplicationAttemptReport(ApplicationAttemptId applicationAttemptId) Get a report of the given ApplicationAttempt.
abstract List<ApplicationAttemptReport>	getApplicationAttempts(ApplicationId applicationId) Get a report of all (ApplicationAttempts) of Application in the cluster.
abstract ApplicationReport	getApplicationReport(ApplicationId appId) Get a report of the given Application.
abstract List<ApplicationReport>	getApplications() Get a report (ApplicationReport) of all Applications in the cluster.
abstract ContainerReport	getContainerReport(ContainerId containerId) Get a report of the given Container.
abstract List<ContainerReport>	getContainers(ApplicationAttemptId applicationAttemptId) Get a report of all (Containers) of ApplicationAttempt in the cluster.

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, serviceInit, serviceStart, serviceStop, 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

AHSClient

@InterfaceAudience.Private
public AHSClient(String name)

Method Detail

createAHSClient

@InterfaceAudience.Public
public static AHSClient createAHSClient()

Create a new instance of AHSClient.

getApplicationReport

public abstract ApplicationReport getApplicationReport(ApplicationId appId)
                                                throws YarnException,
                                                       IOException

Get a report of the given Application.

In secure mode, YARN verifies access to the application, queue etc. before accepting the request.

If the user does not have VIEW_APP access then the following fields in the report will be set to stubbed values:

• host - set to "N/A"
• RPC port - set to -1
• client token - set to "N/A"
• diagnostics - set to "N/A"
• tracking URL - set to "N/A"
• original tracking URL - set to "N/A"
• resource usage report - all values are -1

Parameters:

appId - ApplicationId of the application that needs a report

Returns:

application report

Throws:

YarnException

IOException

getApplications

public abstract List<ApplicationReport> getApplications()
                                                 throws YarnException,
                                                        IOException

Get a report (ApplicationReport) of all Applications in the cluster.

If the user does not have VIEW_APP access for an application then the corresponding report will be filtered as described in getApplicationReport(ApplicationId).

Returns:

a list of reports for all applications

Throws:

YarnException

IOException

getApplicationAttemptReport

public abstract ApplicationAttemptReport getApplicationAttemptReport(ApplicationAttemptId applicationAttemptId)
                                                              throws YarnException,
                                                                     IOException

Get a report of the given ApplicationAttempt.

In secure mode, YARN verifies access to the application, queue etc. before accepting the request.

Parameters:

applicationAttemptId - ApplicationAttemptId of the application attempt that needs a report

Returns:

application attempt report

Throws:

YarnException

ApplicationAttemptNotFoundException - if application attempt not found

IOException

getApplicationAttempts

public abstract List<ApplicationAttemptReport> getApplicationAttempts(ApplicationId applicationId)
                                                               throws YarnException,
                                                                      IOException

Get a report of all (ApplicationAttempts) of Application in the cluster.

Parameters:

applicationId -

Returns:

a list of reports for all application attempts for specified application

Throws:

YarnException

IOException

getContainerReport

public abstract ContainerReport getContainerReport(ContainerId containerId)
                                            throws YarnException,
                                                   IOException

Get a report of the given Container.

In secure mode, YARN verifies access to the application, queue etc. before accepting the request.

Parameters:

containerId - ContainerId of the container that needs a report

Returns:

container report

Throws:

YarnException

ContainerNotFoundException - if container not found

IOException

getContainers

public abstract List<ContainerReport> getContainers(ApplicationAttemptId applicationAttemptId)
                                             throws YarnException,
                                                    IOException

Get a report of all (Containers) of ApplicationAttempt in the cluster.

Parameters:

applicationAttemptId -

Returns:

a list of reports of all containers for specified application attempt

Throws:

YarnException

IOException