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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6040) Introduce api independent PendingAsk to replace usage of ResourceRequest within Scheduler classes
Date Fri, 06 Jan 2017 18:03:58 GMT

    [ https://issues.apache.org/jira/browse/YARN-6040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15805152#comment-15805152
] 

Wangda Tan commented on YARN-6040:
----------------------------------

Thanks for review and commit, [~asuresh]!

Just created YARN-6065 to add more javadocs.

> Introduce api independent PendingAsk to replace usage of ResourceRequest within Scheduler
classes
> -------------------------------------------------------------------------------------------------
>
>                 Key: YARN-6040
>                 URL: https://issues.apache.org/jira/browse/YARN-6040
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>             Fix For: 3.0.0-alpha2
>
>         Attachments: YARN-6040.001.patch, YARN-6040.002.patch, YARN-6040.003.patch, YARN-6040.004.patch,
YARN-6040.005.patch, YARN-6040.006.patch, YARN-6040.007.patch
>
>
> As mentioned by YARN-5906, currently schedulers are using ResourceRequest heavily so
it will be very hard to adopt the new PowerfulResourceRequest (YARN-4902).
> This JIRA is the 2nd step of refactoring, which remove usage of ResourceRequest from
AppSchedulingInfo / SchedulerApplicationAttempt. Instead of returning ResourceRequest, it
returns a lightweight and API-independent object - {{PendingAsk}}.
> The only remained ResourceRequest API of AppSchedulingInfo will be used by web service
to get list of ResourceRequests.
> So after this patch, usage of ResourceRequest will be isolated inside AppSchedulingInfo,
so it will be more flexible to update internal data structure and upgrade old ResourceRequest
API to new.



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