Mit Desai created YARN-4183:
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Summary: 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
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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