Li Lu commented on YARN-3033:

As the discussed functions of aggregator collections, we may still need the 
storage connection layer in a collection? 

> [Aggregator wireup] Implement NM starting the standalone ATS writer companion
> -----------------------------------------------------------------------------
>                 Key: YARN-3033
>                 URL: https://issues.apache.org/jira/browse/YARN-3033
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Sangjin Lee
>            Assignee: Li Lu
>         Attachments: MappingandlaunchingApplevelTimelineaggregators.pdf
> Per design in YARN-2928, implement node managers starting the ATS writer 
> companion. In YARN-2928, we already have an auxiliary service based solution. 
> Per discussion below, the bulk of that approach has actually been done as 
> part of YARN-3030. In this ticket we can work on the remaining tasks, for 
> example:
> # any needed change for configuration, esp. running it inside the NM (e.g. 
> the number of servlet threads)
> # set up a start script that starts the per-node aggregator as a standalone 
> daemon
> # for the standalone mode, implement a service that receives requests to set 
> up and tear down the app-level data

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