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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-553) Have YarnClient generate a directly usable ApplicationSubmissionContext
Date Tue, 18 Jun 2013 17:10:21 GMT

    [ https://issues.apache.org/jira/browse/YARN-553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13686972#comment-13686972

Harsh J commented on YARN-553:

I'm fine with what Arun's proposed above - a single API call that does it all for you (since
it has the relevant context) would be very nice for app writers.
> 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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