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https://issues.apache.org/jira/browse/YARN-4183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15217147#comment-15217147
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Sangjin Lee commented on YARN-4183:
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I updated the title of the JIRA. Let me know if it is good to go. I'll wait for
a couple of hours before committing the patch. Thanks!
> Clarify the behavior of timeline service config properties
> ----------------------------------------------------------
>
> Key: YARN-4183
> URL: https://issues.apache.org/jira/browse/YARN-4183
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.7.1
> Reporter: Mit Desai
> Assignee: Naganarasimha G R
> Attachments: YARN-4183.1.patch, YARN-4183.v1.001.patch,
> YARN-4183.v1.002.patch
>
>
> When enabling just the Generic History Server and not the timeline server,
> the system metrics publisher will not publish the events to the timeline
> store as it checks if the timeline server and system metrics publisher are
> enabled before creating a timeline client.
> To make it work, if the timeline service flag is turned on, it will force
> every yarn application to get a delegation token.
> Instead of checking if timeline service is enabled, we should be checking if
> application history server is enabled.
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