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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1942) ConverterUtils should not be Private
Date Tue, 15 Apr 2014 17:37:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-1942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13969787#comment-13969787
] 

Jason Lowe commented on YARN-1942:
----------------------------------

+1 to moving the conversion-from-string utilities into the various abstract record classes.

> ConverterUtils should not be Private
> ------------------------------------
>
>                 Key: YARN-1942
>                 URL: https://issues.apache.org/jira/browse/YARN-1942
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: api
>    Affects Versions: 2.4.0
>            Reporter: Thomas Graves
>            Priority: Critical
>
> 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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