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https://issues.apache.org/jira/browse/YARN-4183?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mit Desai updated YARN-4183:
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Attachment: YARN-4183.1.patch
Attaching the patch
> Enabling generic application history forces every job to get a timeline
> service delegation token
> ------------------------------------------------------------------------------------------------
>
> 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: Mit Desai
> Attachments: YARN-4183.1.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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