Hitesh Shah commented on YARN-2833:

[~zjshen] Please create a dup of this with the relevant info so that it is 
considered for the v2 design. I will close this one out. 

> Timeline Domains should be immutable by default
> -----------------------------------------------
>                 Key: YARN-2833
>                 URL: https://issues.apache.org/jira/browse/YARN-2833
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: timelineserver
>            Reporter: Hitesh Shah
> In a general sense, when ACLs are defined for applications in various orgs 
> deploying Hadoop clusters, the ratio of unique ACLs to no. of jobs run on the 
> cluster should likely be a low value. In such a situation, it makes sense to 
> have a way to normalize the ACL set to generate an immutable domain id. 
> This should likely have performance and storage benefits. 
> There may be some cases where domains may need to be mutable. For that, I 
> propose a flag to be set when the domain is being created ( flag's default 
> value being immutable ).

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