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Date: Wed, 11 Oct 2017 08:42:00 +0000 (UTC)
From: "Varun Vasudev (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.13106791.1507061964000.26148.1507711320304@Atlassian.JIRA>
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Subject: [jira] [Commented] (YARN-7286) Add support for docker to have no
 capabilities
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archived-at: Wed, 11 Oct 2017 08:42:06 -0000


    [ https://issues.apache.org/jira/browse/YARN-7286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16199967#comment-16199967 ] 

Varun Vasudev commented on YARN-7286:
-------------------------------------

The none approach makes best sense to me. The DEFAULT_NM_DOCKER_CONTAINER_CAPABILITIES was added because it's unreasonable to expect every user to specify capabilities. We should just call it out in the documentation that "none" is a special property for us. As to lower-case vs upper-case, the upper case is just a recommendation, we should go with whatever we think makes sense.

> Add support for docker to have no capabilities
> ----------------------------------------------
>
>                 Key: YARN-7286
>                 URL: https://issues.apache.org/jira/browse/YARN-7286
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: yarn
>            Reporter: Eric Badger
>            Assignee: Eric Badger
>         Attachments: YARN-7286.001.patch, YARN-7286.002.patch, YARN-7286.003.patch
>
>
> Support for controlling capabilities was introduced in YARN-4258. However, it does not allow for the capabilities list to be NULL, since {{getStrings()}} will treat an empty value the same as it treats an unset property. So, a NULL list will actually give the default capabilities list.


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