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https://issues.apache.org/jira/browse/YARN-6456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16582594#comment-16582594
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Jason Lowe commented on YARN-6456:
----------------------------------
[~ebadger] did the work related to this in our internal build. He's been out
the past week or so, but he just got back and should be able to post relevant
code soon.
> Allow administrators to set a single ContainerRuntime for all containers
> ------------------------------------------------------------------------
>
> Key: YARN-6456
> URL: https://issues.apache.org/jira/browse/YARN-6456
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: nodemanager
> Reporter: Miklos Szegedi
> Assignee: Craig Condit
> Priority: Major
> Labels: Docker
>
>
> With LCE, there are multiple ContainerRuntimes available for handling
> different types of containers; default, docker, java sandbox. Admins should
> have the ability to override the user decision and set a single global
> ContainerRuntime to be used for all containers.
> Original Description:
> {quote}One reason to use Docker containers is to be able to isolate different
> workloads, even, if they run as the same user.
> I have noticed some issues in the current design:
> 1. DockerLinuxContainerRuntime mounts containerLocalDirs
> {{nm-local-dir/usercache/user/appcache/application_1491598755372_0011/}} and
> userLocalDirs {{nm-local-dir/usercache/user/}}, so that a container can see
> and modify the files of another container. I think the application file cache
> directory should be enough for the container to run in most of the cases.
> 2. The whole cgroups directory is mounted. Would the container directory be
> enough?
> 3. There is no way to enforce exclusive use of Docker for all containers.
> There should be an option that it is not the user but the admin that requires
> to use Docker.
> {quote}
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