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Posted to yarn-issues@hadoop.apache.org by "Suma Shivaprasad (JIRA)" <ji...@apache.org> on 2018/10/04 23:14:00 UTC

[jira] [Commented] (YARN-7935) Expose container's hostname to applications running within the docker container

    [ https://issues.apache.org/jira/browse/YARN-7935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16639019#comment-16639019 ] 

Suma Shivaprasad commented on YARN-7935:
----------------------------------------

This is no longer needed since the container's hostname, IP and additional information could be obtained via YARN-8659 by Spark or other AMs which need this information.

> 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
>              Labels: Docker
>         Attachments: YARN-7935.1.patch, YARN-7935.2.patch, YARN-7935.3.patch, YARN-7935.4.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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