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https://issues.apache.org/jira/browse/YARN-8259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16479872#comment-16479872
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Eric Yang commented on YARN-8259:
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I prefer to use docker ps -fname=containerID. This approach keeps abstraction
in place. Docker reliability is not a responsibility that YARN community to
bare. /proc check is ok. Root user signal can be too powerful for status
check in some situation. I prefer to avoid it unless there is no better
options.
> Revisit liveliness checks for privileged Docker containers
> ----------------------------------------------------------
>
> Key: YARN-8259
> URL: https://issues.apache.org/jira/browse/YARN-8259
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: 3.0.2, 3.2.0, 3.1.1
> Reporter: Shane Kumpf
> Priority: Major
> Labels: Docker
>
> As privileged containers may execute as a user that does not match the YARN
> run as user, sending the null signal for liveliness checks could fail. We
> need to reconsider how liveliness checks are handled in the Docker case.
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