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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5440) Use AHSClient in YarnClient when TimelineServer is running
Date Wed, 27 Jul 2016 23:03:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-5440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15396600#comment-15396600

Junping Du commented on YARN-5440:

bq. if the user turn off timeline service but enable AHS in the config.
In my understanding, if we enable AHS config but turn of timeline service, we will still create
AHSClient to get finished application container information. The only different w/o the patch
here is: this new added feature (log CLI enhancement) in 2.9 don't have to work by explicitly
set a deprecated configuration of AHS. Instead, it also work with enabling ATS only. [~xgong],
can you confirm this?

> Use AHSClient in YarnClient when TimelineServer is running
> ----------------------------------------------------------
>                 Key: YARN-5440
>                 URL: https://issues.apache.org/jira/browse/YARN-5440
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.9.0
>            Reporter: Xuan Gong
>            Assignee: Xuan Gong
>         Attachments: YARN-5440.1.patch
> In YarnClient, depends on whether we enable yarn.timeline-service.generic-application-history.enabled,
the AHSClient will be used or not. But the AHSClientService is enabled by default when we
start the TimelineServer which means we are able to get history information for applications/applicationAttempts/containers
by using ahsClient when the TimelineServer is running. So, we do not have to rely on this
deprecated configuration to get history information by using YarnClient.

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