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https://issues.apache.org/jira/browse/YARN-7430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16262435#comment-16262435
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Varun Vasudev commented on YARN-7430:
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[~andrew.wang] - given that you're cutting a new RC for 3.0 , do you mind if we
backport this into 3.0? It's a reasonably important configuration change and
fixes the default behaviour when Docker container are launched. Thanks!
> Enable user re-mapping for Docker containers by default
> -------------------------------------------------------
>
> 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
> Fix For: 3.1.0, 2.10.0, 2.9.1, 3.0.1
>
> 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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