Junping Du created YARN-3817:

             Summary: Flow and User level aggregation on Application States 
                 Key: YARN-3817
                 URL: https://issues.apache.org/jira/browse/YARN-3817
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: timelineserver
            Reporter: Junping Du
            Assignee: Junping Du

We need flow/user level aggregation to present flow/user related states to end 
Flow level aggregation involve three levels aggregations:
- The first level is Flow_run level which represents one execution of a flow 
and shows exactly aggregated data for a run of flow.
- The 2nd level is Flow_version level which represents summary info of a 
version of flow.
- The 3rd level is Flow level which represents summary info of a specific flow.

User level aggregation represents summary info of a specific user, it should 
include summary info of accumulated and statistic means (by two levels: 
application and flow), like: number of Flows, applications, resource 
consumption, resource means per app or flow, etc. 

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