Junping Du created YARN-3488:

             Summary: AM get timeline service info from RM rather than 
Application specific configuration.
                 Key: YARN-3488
                 URL: https://issues.apache.org/jira/browse/YARN-3488
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: applications
            Reporter: Junping Du
            Assignee: Junping Du

Since v1 timeline service, we have MR configuration to enable/disable putting 
history event to timeline service. For today's v2 timeline service ongoing 
effort, currently we have different methods/structures between v1 and v2 for 
consuming TimelineClient, so application have to be aware of which version 
timeline service get used there.
There are basically two options here:
First option is as current way in DistributedShell or MR to let application has 
specific configuration to point out that if enabling ATS and which version 
could be, like: MRJobConfig.MAPREDUCE_JOB_EMIT_TIMELINE_DATA, etc.
The other option is to let application to figure out timeline related info from 
YARN/RM, it can be done through registerApplicationMaster() in 
ApplicationMasterProtocol with return value for service "off", "v1_on", or 
We prefer the latter option because application owner doesn't have to aware 
RM/YARN infrastructure details. Please note that we should keep compatible 
(consistent behavior with the same setting) with released configurations.

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