Vrushali C commented on YARN-8157:

cc [~haibo.chen] and [~rohithsharma] as discussed today, filed this jira for 
collector side code changes while writing. 

> Update timeline collector to store and add domain info to entities while 
> writing
> --------------------------------------------------------------------------------
>                 Key: YARN-8157
>                 URL: https://issues.apache.org/jira/browse/YARN-8157
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Vrushali C
>            Priority: Major
> As part of YARN-3895 ,  the timeline collector will enable storing the domain 
> information in denormalized in the tables when security is enabled. 
> The collector would need to maintain a map in memory for app id to domain id 
> & info and append this to entities while writing. 
> In case the collector goes down, this map is to be repopulated which is part 
> of YARN-8089

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