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From "Thomas Graves (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7935) Expose container's hostname to applications running within the docker container
Date Fri, 23 Feb 2018 16:36:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16374598#comment-16374598
] 

Thomas Graves commented on YARN-7935:
-------------------------------------

thanks for the explanation Mridul. I'm fine with waiting on the spark Jira til you know the
scope better, I'm currently not doing anything with bridge mode so won't be able to help there
at this point.

> Expose container's hostname to applications running within the docker container
> -------------------------------------------------------------------------------
>
>                 Key: YARN-7935
>                 URL: https://issues.apache.org/jira/browse/YARN-7935
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: yarn
>            Reporter: Suma Shivaprasad
>            Assignee: Suma Shivaprasad
>            Priority: Major
>         Attachments: YARN-7935.1.patch, YARN-7935.2.patch
>
>
> Some applications have a need to bind to the container's hostname (like Spark) which
is different from the NodeManager's hostname(NM_HOST which is available as an env during container
launch) when launched through Docker runtime. The container's hostname can be exposed to
applications via an env CONTAINER_HOSTNAME. Another potential candidate is the container's
IP but this can be addressed in a separate jira.



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