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From "Billie Rinaldi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7729) Add support for setting the PID namespace mode
Date Wed, 17 Jan 2018 20:55:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16329456#comment-16329456

Billie Rinaldi commented on YARN-7729:

Thanks for the review, [~shanekumpf@gmail.com]! I am working on a patch that addresses your
suggestions. It seems like I will need to wait until after YARN-7717 is committed to be able
to use the same check for true that is introduced in that patch. Regarding the formatting
change in TestDockerContainerRuntime, I added that because the old formatting produced 2 checkstyle
errors for the first patch I submitted.

> Add support for setting the PID namespace mode
> ----------------------------------------------
>                 Key: YARN-7729
>                 URL: https://issues.apache.org/jira/browse/YARN-7729
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>            Reporter: Shane Kumpf
>            Assignee: Billie Rinaldi
>            Priority: Major
>         Attachments: YARN-7729.001.patch, YARN-7729.002.patch
> Docker has support for allowing containers to share the PID namespace with the host or
other containers via the {{docker run --pid}} flag.
> There are a number of use cases where this is desirable:
> * Monitoring tools running in containers that need access to the host level PIDs.
> * Debug containers that can attach to another container to run strace, gdb, etc.
> * Testing Docker on YARN in a container, where the docker socket is bind mounted.
> Enabling this feature should be considered privileged as it exposes host details inside
the container.

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