[YARN-553] Have YarnClient generate a directly usable ApplicationSubmissionContext

• Type: Sub-task
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.3-alpha
• Fix Version/s: 2.1.0-beta
• Component/s: client
• Target Version/s: 2.1.0-beta
• Hadoop Flags: Incompatible change
• Assignee: Karthik Kambatla
• Reporter: Harsh J
• Created: 07/Apr/13 18:44
• Updated: 03/Nov/14 18:06
• Resolved: 19/Jun/13 07:08

Description

Right now, we're doing multiple steps to create a relevant ApplicationSubmissionContext for a pre-received GetNewApplicationResponse.

    GetNewApplicationResponse newApp = yarnClient.getNewApplication();
    ApplicationId appId = newApp.getApplicationId();

    ApplicationSubmissionContext appContext = Records.newRecord(ApplicationSubmissionContext.class);

    appContext.setApplicationId(appId);

A simplified way may be to have the GetNewApplicationResponse itself provide a helper method that builds a usable ApplicationSubmissionContext for us. Something like:

GetNewApplicationResponse newApp = yarnClient.getNewApplication();
ApplicationSubmissionContext appContext = newApp.generateApplicationSubmissionContext();

[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.]