Li Lu commented on YARN-3378:

Hi [~Naganarasimha], YARN-2556 was mainly opened for measuring the existing ATS 
v1's performance. In this JIRA our main focus we'd like to build a client to 
generate reasonable load to guide v2 timeline service's storage design. From 
our discussion about Phoenix/hbase I believe this is a quite necessary step for 
us to understand our v2 design. These two JIRAs also work on two different 
branches. Just like timeline service v1 and v2 may co-exist (so do all related 
jiras) in YARN-2928 branch, I don't see any reason to prevent both JIRAs exist. 
If you have any special concerns about this feel free to let us know. Thanks! 

> a load test client that can replay a volume of history files
> ------------------------------------------------------------
>                 Key: YARN-3378
>                 URL: https://issues.apache.org/jira/browse/YARN-3378
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Sangjin Lee
>            Assignee: Li Lu
> It might be good to create a load test client that can replay a large volume 
> of history files into the timeline service. One can envision running such a 
> load test client as a mapreduce job and generate a fair amount of load. It 
> would be useful to spot check correctness, and more importantly observe 
> performance characteristic.

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