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https://issues.apache.org/jira/browse/YARN-1942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14571761#comment-14571761
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Sergey Shelukhin commented on YARN-1942:
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No, it's used in production code as far as I can tell

> Many of ConverterUtils methods need to have public interfaces
> -------------------------------------------------------------
>
>                 Key: YARN-1942
>                 URL: https://issues.apache.org/jira/browse/YARN-1942
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: api
>    Affects Versions: 2.4.0
>            Reporter: Thomas Graves
>            Assignee: Wangda Tan
>            Priority: Critical
>         Attachments: YARN-1942.1.patch, YARN-1942.2.patch
>
>
> ConverterUtils has a bunch of functions that are useful to application 
> masters.   It should either be made public or we make some of the utilities 
> in it public or we provide other external apis for application masters to 
> use.  Note that distributedshell and MR are both using these interfaces. 
> For instance the main use case I see right now is for getting the application 
> attempt id within the appmaster:
> String containerIdStr =
>           System.getenv(Environment.CONTAINER_ID.name());
> ConverterUtils.toContainerId
> ContainerId containerId = ConverterUtils.toContainerId(containerIdStr);
>       ApplicationAttemptId applicationAttemptId =
>           containerId.getApplicationAttemptId();
> I don't see any other way for the application master to get this information. 
>  If there is please let me know.



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