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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-553) Have GetNewApplicationResponse generate a directly usable ApplicationSubmissionContext
Date Sun, 07 Apr 2013 18:45:16 GMT
Harsh J created YARN-553:
----------------------------

             Summary: Have GetNewApplicationResponse 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
            Priority: Minor


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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