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Posted to yarn-issues@hadoop.apache.org by "Daniel Templeton (JIRA)" <ji...@apache.org> on 2016/01/27 20:34:40 UTC

[jira] [Resolved] (YARN-4632) Replacing _HOST in RM_PRINCIPAL should not be the responsibility of the client code

     [ https://issues.apache.org/jira/browse/YARN-4632?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Templeton resolved YARN-4632.
------------------------------------
    Resolution: Won't Fix

Because we can't, we won't, and we don't fix.

> Replacing _HOST in RM_PRINCIPAL should not be the responsibility of the client code
> -----------------------------------------------------------------------------------
>
>                 Key: YARN-4632
>                 URL: https://issues.apache.org/jira/browse/YARN-4632
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: api, resourcemanager
>    Affects Versions: 2.7.1
>            Reporter: Daniel Templeton
>            Assignee: Daniel Templeton
>            Priority: Critical
>
> It is currently the client's responsibility to call {{SecurityUtil.getServerPrincipal()}} to replace the _HOST placeholder in any principal name used for a delegation token.  This is a non-optional operation and should not be pushed onto the client.
> All client apps that followed the distributed shell as the canonical example failed to do the replacement because distributed shell fails to do the replacement.  (See YARN-4629.)  Rather than fixing the whole world, since the whole world use distributed shell as a model, let's move the operation into YARN where it belongs.



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