Jason Lowe commented on YARN-3230:

bq. NEW_SAVING: is not necessary to be seen by client?

I agree, it's not a state that seems relevant to a client.  We're not even 
consistent about it, since FINAL_SAVING is not visible to clients and is 
silently translated to the previous state.  However might be kind of hard to 
remove completely at this point since it's been published.

> Clarify application states on the web UI
> ----------------------------------------
>                 Key: YARN-3230
>                 URL: https://issues.apache.org/jira/browse/YARN-3230
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Jian He
>            Assignee: Jian He
>         Attachments: YARN-3230.1.patch, YARN-3230.2.patch, YARN-3230.3.patch
> Today, application state are simply surfaced as a single word on the web UI. 
> Not everyone understands the meaning of "NEW_SAVING, SUBMITTED, ACCEPTED". 
> This jira is to clarify the meaning of these states, things like what the 
> application is waiting for at this state. 
> In addition,the difference between application state and FinalStatus are 
> fairly confusing to users, especially when state=FINISHED, but 
> FinalStatus=FAILED

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