Package org.apache.hadoop.yarn.client.api

Class TimelineClient

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.service.CompositeService

org.apache.hadoop.yarn.client.api.TimelineClient

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable, Service

@Public
@Evolving
public abstract class TimelineClient
extends CompositeService
implements Flushable

A client library that can be used to post some information in terms of a number of conceptual entities. This client library needs to be used along with Timeline V.1.x server versions. Refer TimelineV2Client for ATS V2 interface.

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

Service.STATE

Field Summary

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

STOP_ONLY_STARTED_SERVICES

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	TimelineClient(String name)

Method Summary

Modifier and Type	Method	Description
abstract void	cancelDelegationToken(Token<TimelineDelegationTokenIdentifier> timelineDT)	Cancel a timeline delegation token.
static TimelineClient	createTimelineClient()	Creates an instance of the timeline v.1.x client.
abstract Token<TimelineDelegationTokenIdentifier>	getDelegationToken(String renewer)	Get a delegation token so as to be able to talk to the timeline server in a secure way.
abstract void	putDomain(ApplicationAttemptId appAttemptId, TimelineDomain domain)	Send the information of a domain to the timeline server.
abstract void	putDomain(TimelineDomain domain)	Send the information of a domain to the timeline server.
abstract TimelinePutResponse	putEntities(ApplicationAttemptId appAttemptId, TimelineEntityGroupId groupId, TimelineEntity... entities)	Send the information of a number of conceptual entities to the timeline server.
abstract TimelinePutResponse	putEntities(TimelineEntity... entities)	Send the information of a number of conceptual entities to the timeline server.
abstract long	renewDelegationToken(Token<TimelineDelegationTokenIdentifier> timelineDT)	Renew a timeline delegation token.

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

addIfService, addService, getServices, removeService, serviceInit, serviceStart, serviceStop

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, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.Flushable

flush

Constructor Details

TimelineClient

protected TimelineClient(String name)

Method Details

createTimelineClient

@Public
public static TimelineClient createTimelineClient()

Creates an instance of the timeline v.1.x client. The current UGI when the user initialize the client will be used to do the put and the delegation token operations. The current user may use UserGroupInformation.doAs(java.security.PrivilegedAction<T>) another user to construct and initialize a timeline client if the following operations are supposed to be conducted by that user.

Returns:

the created timeline client instance

putEntities

@Public
public abstract TimelinePutResponse putEntities(TimelineEntity... entities)
                                         throws IOException,
YarnException

Send the information of a number of conceptual entities to the timeline server. It is a blocking API. The method will not return until it gets the response from the timeline server.

Parameters:

entities - the collection of TimelineEntity

Returns:

the error information if the sent entities are not correctly stored

Throws:

IOException - if there are I/O errors

YarnException - if entities are incomplete/invalid

putEntities

@Public
public abstract TimelinePutResponse putEntities(ApplicationAttemptId appAttemptId,
 TimelineEntityGroupId groupId,
 TimelineEntity... entities)
                                         throws IOException,
YarnException

Send the information of a number of conceptual entities to the timeline server. It is a blocking API. The method will not return until it gets the response from the timeline server. This API is only for timeline service v1.5

Parameters:

appAttemptId - ApplicationAttemptId

groupId - TimelineEntityGroupId

entities - the collection of TimelineEntity

Returns:

the error information if the sent entities are not correctly stored

Throws:

IOException - if there are I/O errors

YarnException - if entities are incomplete/invalid

putDomain

@Public
public abstract void putDomain(TimelineDomain domain)
                        throws IOException,
YarnException

Send the information of a domain to the timeline server. It is a blocking API. The method will not return until it gets the response from the timeline server.

Parameters:

domain - an TimelineDomain object

Throws:

IOException - io error occur.

YarnException - exceptions from yarn servers.

putDomain

@Public
public abstract void putDomain(ApplicationAttemptId appAttemptId,
 TimelineDomain domain)
                        throws IOException,
YarnException

Send the information of a domain to the timeline server. It is a blocking API. The method will not return until it gets the response from the timeline server. This API is only for timeline service v1.5

Parameters:

domain - an TimelineDomain object

appAttemptId - ApplicationAttemptId

Throws:

IOException - io error occur.

YarnException - exceptions from yarn servers.

getDelegationToken

@Public
public abstract Token<TimelineDelegationTokenIdentifier> getDelegationToken(String renewer)
                                                                     throws IOException,
YarnException

Get a delegation token so as to be able to talk to the timeline server in a secure way.

Parameters:

renewer - Address of the renewer who can renew these tokens when needed by securely talking to the timeline server

Returns:

a delegation token (Token) that can be used to talk to the timeline server

Throws:

IOException - io error occur.

YarnException - exceptions from yarn servers.

renewDelegationToken

@Public
public abstract long renewDelegationToken(Token<TimelineDelegationTokenIdentifier> timelineDT)
                                   throws IOException,
YarnException

Renew a timeline delegation token.

Parameters:

timelineDT - the delegation token to renew

Returns:

the new expiration time

Throws:

IOException - io error occur.

YarnException - exceptions from yarn servers.

cancelDelegationToken

@Public
public abstract void cancelDelegationToken(Token<TimelineDelegationTokenIdentifier> timelineDT)
                                    throws IOException,
YarnException

Cancel a timeline delegation token.

Parameters:

timelineDT - the delegation token to cancel

Throws:

IOException - io error occur.

YarnException - exceptions from yarn servers.