Zhijie Shen updated YARN-2302:

    Attachment: YARN-2302.4.patch

Fix the javadoc warnings

> Refactor TimelineWebServices
> ----------------------------
>                 Key: YARN-2302
>                 URL: https://issues.apache.org/jira/browse/YARN-2302
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Zhijie Shen
>            Assignee: Zhijie Shen
>         Attachments: YARN-2302.1.patch, YARN-2302.2.patch, YARN-2302.3.patch, 
> YARN-2302.4.patch
> Now TimelineWebServices contains non-trivial logic to process the HTTP 
> requests, manipulate the data, check the access, and interact with the 
> timeline store.
> I propose the move the data-oriented logic to a middle layer (so called 
> TimelineDataManager), and TimelineWebServices only processes the requests, 
> and call TimelineDataManager to complete the remaining tasks.
> By doing this, we make the generic history module reuse TimelineDataManager 
> internally (YARN-2033), invoking the putting/getting methods directly. 
> Otherwise, we have to send the HTTP requests to TimelineWebServices to query 
> the generic history data, which is not an efficient way.

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