Junping Du created YARN-3488:
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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
"v2_on".
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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