Junping Du created YARN-3816:

             Summary: [Aggregation] App-level Aggregation on entity tables
                 Key: YARN-3816
                 URL: https://issues.apache.org/jira/browse/YARN-3816
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Junping Du
            Assignee: Junping Du

We need application level aggregation of Timeline data:
- To present end user aggregated states for each application, include: resource 
(CPU, Memory) consumption across all containers, number of containers 
launched/completed/failed, etc. We need this for apps while they are running as 
well as when they are done.
- Also, framework specific metrics, e.g. HDFS_BYTES_READ, should be aggregated 
to show details of states in framework level.
- Other level (Flow/User/Queue) aggregation can be more efficient to be based 
on Application-level aggregations rather than raw entity-level data as much 
less raws need to scan (with filter out non-aggregated entities, like: events, 
configurations, etc.).

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