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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-553) Have YarnClient generate a directly usable ApplicationSubmissionContext
Date Tue, 18 Jun 2013 16:56:21 GMT

    [ https://issues.apache.org/jira/browse/YARN-553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13686961#comment-13686961
] 

Karthik Kambatla commented on YARN-553:
---------------------------------------

Hey [~acmurthy], thanks for taking a look. Having just one API makes sense - I remember considering
doing it that way, but refrained for some reason. Will take another shot this afternoon, and
post something soon - new patch or updated patch with reason why we can't have a single API.
Thanks. 
                
> Have YarnClient generate a directly usable ApplicationSubmissionContext
> -----------------------------------------------------------------------
>
>                 Key: YARN-553
>                 URL: https://issues.apache.org/jira/browse/YARN-553
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: client
>    Affects Versions: 2.0.3-alpha
>            Reporter: Harsh J
>            Assignee: Karthik Kambatla
>            Priority: Minor
>         Attachments: yarn-553-1.patch, yarn-553-2.patch
>
>
> Right now, we're doing multiple steps to create a relevant ApplicationSubmissionContext
for a pre-received GetNewApplicationResponse.
> {code}
>     GetNewApplicationResponse newApp = yarnClient.getNewApplication();
>     ApplicationId appId = newApp.getApplicationId();
>     ApplicationSubmissionContext appContext = Records.newRecord(ApplicationSubmissionContext.class);
>     appContext.setApplicationId(appId);
> {code}
> A simplified way may be to have the GetNewApplicationResponse itself provide a helper
method that builds a usable ApplicationSubmissionContext for us. Something like:
> {code}
> GetNewApplicationResponse newApp = yarnClient.getNewApplication();
> ApplicationSubmissionContext appContext = newApp.generateApplicationSubmissionContext();
> {code}
> [The above method can also take an arg for the container launch spec, or perhaps pre-load
defaults like min-resource, etc. in the returned object, aside of just associating the application
ID automatically.]

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