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https://issues.apache.org/jira/browse/YARN-7654?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16399772#comment-16399772
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Eric Yang commented on YARN-7654:
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[~ebadger] [~jlowe] [~shaneku...@gmail.com] This is a early patch using execl
instead of shell script to launch. I am currently running into a problem that
after docker is started, the existing logic for detecting docker exit is not
working. Let me know what you think about this approach. I am concerned that
we are using popen for docker launch for non-entry point version, it actually
spawn a shell underneath. We might need to convert the output buffer from
char array to char pointer array to avoid chopping strings in the middle. Your
early feedback is appreciated. Thanks
> Support ENTRY_POINT for docker container
> ----------------------------------------
>
> Key: YARN-7654
> URL: https://issues.apache.org/jira/browse/YARN-7654
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: yarn
> Affects Versions: 3.1.0
> Reporter: Eric Yang
> Assignee: Eric Yang
> Priority: Blocker
> Attachments: YARN-7654.001.patch, YARN-7654.002.patch
>
>
> Docker image may have ENTRY_POINT predefined, but this is not supported in
> the current implementation. It would be nice if we can detect existence of
> {{launch_command}} and base on this variable launch docker container in
> different ways:
> h3. Launch command exists
> {code}
> docker run [image]:[version]
> docker exec [container_id] [launch_command]
> {code}
> h3. Use ENTRY_POINT
> {code}
> docker run [image]:[version]
> {code}
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