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From "Shane Kumpf (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7430) User and Group mapping are incorrect in docker container
Date Mon, 13 Nov 2017 22:07:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16250334#comment-16250334
] 

Shane Kumpf commented on YARN-7430:
-----------------------------------

Thanks for clarifying, I hadn't considered a system configured to use numeric usernames, that
makes sense. I know there were concerns on YARN-4266 that the uid:gid mapping approach won't
work for all container types, but it seems it would for the types we support today. [~sidharta-s]
[~vvasudev] - what are your thoughts about enabling uid:gid + group-add by default?

> User and Group mapping are incorrect in docker container
> --------------------------------------------------------
>
>                 Key: YARN-7430
>                 URL: https://issues.apache.org/jira/browse/YARN-7430
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: security, yarn
>    Affects Versions: 2.9.0, 3.0.0
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>            Priority: Blocker
>         Attachments: YARN-7430.001.patch, YARN-7430.png
>
>
> In YARN-4266, the recommendation was to use -u [uid]:[gid] numeric values to enforce
user and group for the running user.  In YARN-6623, this translated to --user=test --group-add=group1.
 The code no longer enforce group correctly for launched process.  
> In addition, the implementation in YARN-6623 requires the user and group information
to exist in container to translate username and group to uid/gid.  For users on LDAP, there
is no good way to populate container with user and group information. 



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