Tsuyoshi OZAWA updated YARN-2404:
    Attachment: YARN-2404.5.patch

Refreshed a patch.

I found that TestRMRestart#testAppRecoveredInOrderOnRMRestart fails after the 
refactoring since recoverApplication loads data from 
RMStateStore#RMState#appState, which is created as a instance of HashMap. We 
should make it TreeMap to preserve the restoring order by key, so I fixed it in 
this patch.

[~jianhe], could you take a look?

> Remove ApplicationAttemptState and ApplicationState class in RMStateStore 
> class 
> --------------------------------------------------------------------------------
>                 Key: YARN-2404
>                 URL: https://issues.apache.org/jira/browse/YARN-2404
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Jian He
>            Assignee: Tsuyoshi OZAWA
>         Attachments: YARN-2404.1.patch, YARN-2404.2.patch, YARN-2404.3.patch, 
> YARN-2404.4.patch, YARN-2404.5.patch
> We can remove ApplicationState and ApplicationAttemptState class in 
> RMStateStore, given that we already have ApplicationStateData and 
> ApplicationAttemptStateData records. we may just replace ApplicationState 
> with ApplicationStateData, similarly for ApplicationAttemptState.

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