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https://issues.apache.org/jira/browse/YARN-2480?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haibo Chen resolved YARN-2480.
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Resolution: Won't Fix
Closing this as DockerContainerExecutor has been deprecated in branch-2 and
removed in trunk
> DockerContainerExecutor must support user namespaces
> ----------------------------------------------------
>
> Key: YARN-2480
> URL: https://issues.apache.org/jira/browse/YARN-2480
> Project: Hadoop YARN
> Issue Type: New Feature
> Reporter: Abin Shahab
> Priority: Major
> Labels: security
>
> When DockerContainerExector launches a container, the root inside that
> container has root privileges on the host.
> This is insecure in a mult-tenant environment. The uid of the container's
> root user must be mapped to a non-privileged user on the host.
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