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https://issues.apache.org/jira/browse/YARN-588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13682841#comment-13682841
 ] 

Niranjan Singh commented on YARN-588:
-------------------------------------

As of now I have not removed the single-argument 
Resources#createResource,before I remove the method I just wanted to discuss 
what could be the ramifications of certain method calls when calling this 
method ,as the second argument is going to be hard coded or given some 
arbitrary value.Some of the methods are listed below :

1. public Resource divideAndCeil(Resource numerator, int denominator) {
    return Resources.createResource(
        divideAndCeil(numerator.getMemory(), denominator));
    //Here the changes I propose is
    return Resource.newInstance(divideAndCeil(numerator.getMemory(), 
denominator)), //some value); //hard code
  }

2.public Resource roundUp(Resource r, Resource minimumResource) {
    return Resources.createResource(
        roundUp(r.getMemory(),minimumResource.getMemory())
        );
     //Here the changes I propose is
    return 
Resource.newInstance(roundUp(r.getMemory(),minimumResource.getMemory()), //some 
value);//hard code
  }

3.Resources.createResource(conf.getInt(
            YarnConfiguration.RM_SCHEDULER_MAXIMUM_ALLOCATION_MB,
            YarnConfiguration.DEFAULT_RM_SCHEDULER_MAXIMUM_ALLOCATION_MB), 
//some value);

Conclusion: Will it be correct to pass some random value as the second 
paramenter(//some value) or is it  sufficient to just hard code 0 or 1?

                
> Two identical utility methods in different classes to build Resource
> --------------------------------------------------------------------
>
>                 Key: YARN-588
>                 URL: https://issues.apache.org/jira/browse/YARN-588
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: api
>    Affects Versions: 2.0.3-alpha
>            Reporter: Sandy Ryza
>            Assignee: Niranjan Singh
>            Priority: Minor
>              Labels: newbie
>         Attachments: YARN-588.patch, YARN-588.patch
>
>
> Both Resources and BuilderUtils have a method that takes the same arguments 
> to build a Resource object.  The code doesn't need both of these methods.

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