Sangjin Lee created YARN-3512:

             Summary: add more fine-grained metrics that measure write 
                 Key: YARN-3512
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: timelineserver
            Reporter: Sangjin Lee
            Assignee: Sangjin Lee

We need more fine-grained metrics in the load testing tool that measure the 
write performance of the timeline service. Currently it only captures the 
number of writes and bytes per sec from the API point of view. But the actual 
storage implementation may turn them into many more/fewer writes to the storage 
itself. We need more fine-grained data about what's going on in terms of actual 
writes to storage.

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