Zhijie Shen created YARN-3623:

             Summary: Having the config to indicate the timeline service version
                 Key: YARN-3623
                 URL: https://issues.apache.org/jira/browse/YARN-3623
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: timelineserver
            Reporter: Zhijie Shen
            Assignee: Zhijie Shen

So far RM, MR AM, DA AM added/changed new config to enable the feature to write 
the timeline data to v2 server. It's good to have a YARN 
timeline-service.version config like timeline-service.enable to indicate the 
version of the running timeline service with the given YARN cluster. It's 
beneficial for users to more smoothly move from v1 to v2, as they don't need to 
change the existing config, but switch this config from v1 to v2. And each 
framework doesn't need to have their own v1/v2 config.

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