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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4629) Distributed shell breaks under strong security
Date Wed, 10 Feb 2016 12:57:18 GMT

    [ https://issues.apache.org/jira/browse/YARN-4629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15140729#comment-15140729
] 

Steve Loughran commented on YARN-4629:
--------------------------------------

+1

I've already been testing a variant of this in slider; in a non-HA system it works without
any compatibility problems. 

> Distributed shell breaks under strong security
> ----------------------------------------------
>
>                 Key: YARN-4629
>                 URL: https://issues.apache.org/jira/browse/YARN-4629
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: applications/distributed-shell, security
>    Affects Versions: 2.7.1
>         Environment: Secure cluster with the RM principal listed with a /_HOST entry
to be expanded, most common with YARN HA enabled.
>            Reporter: Daniel Templeton
>            Assignee: Daniel Templeton
>         Attachments: YARN-4629.001.patch, YARN-4629.002.patch, YARN-4629.003.patch, YARN-4629.004.patch
>
>
> If the auth_to_local is set to map requests from unknown hosts to nobody, the dist shell
app fails.  The reason is that the client doesn't translate the _HOST placeholder to the local
hostname.



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