[jira] [Updated] (YARN-2302) Refactor TimelineWebServices

["Zhijie Shen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-2302?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhijie Shen updated YARN-2302:
------------------------------

    Attachment: YARN-2302.1.patch

Upload the patch of the code refactoring. The logic for the web services is kept same. I passed the timeline service test cases locally, and verified the timeline server with a single node cluster, where it worked fine.

> 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
>
>
> 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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