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https://issues.apache.org/jira/browse/YARN-7446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16359027#comment-16359027
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Eric Badger commented on YARN-7446:
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Hey [~eyang], patch looks pretty good. However, I think you're missing a free
of {{privileged}}.
> Docker container privileged mode and --user flag contradict each other
> ----------------------------------------------------------------------
>
> Key: YARN-7446
> URL: https://issues.apache.org/jira/browse/YARN-7446
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: 3.0.0
> Reporter: Eric Yang
> Assignee: Eric Yang
> Priority: Major
> Attachments: YARN-7446.001.patch, YARN-7446.002.patch
>
>
> In the current implementation, when privileged=true, --user flag is also
> passed to docker for launching container. In reality, the container has no
> way to use root privileges unless there is sticky bit or sudoers in the image
> for the specified user to gain privileges again. To avoid duplication of
> dropping and reacquire root privileges, we can reduce the duplication of
> specifying both flag. When privileged mode is enabled, --user flag should be
> omitted. When non-privileged mode is enabled, --user flag is supplied.
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