[jira] [Commented] (MESOS-1094) Introduce pid namespace abstraction to subprocess

["Timothy St. Clair (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-1094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13933975#comment-13933975 ] 

Timothy St. Clair commented on MESOS-1094:
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I figured this was happening ;-) 

Would it be possible to have dev-branches publicly visible.  
Even if they are dev-only WIPs, as I would be happy to help out.


> Introduce pid namespace abstraction to subprocess
> -------------------------------------------------
>
>                 Key: MESOS-1094
>                 URL: https://issues.apache.org/jira/browse/MESOS-1094
>             Project: Mesos
>          Issue Type: Improvement
>            Reporter: Niklas Quarfot Nielsen
>            Assignee: Niklas Quarfot Nielsen
>
> Introducing PID namespacing could simplify signal escalation and process control in for example the command executor and pluggable containerizer.
> Along the lines of the Fork Exec abstraction in stout, I suggest that we add an abstraction for Linux namespaces.
> LinuxNamespace(PID /* | IPC | mount | ...*/, Fork(Exec("sleep 10"))
> It would be guarded or add convenience methods to ensure system support, for example bool LinuxNamespace::supports(PID /* | IPC | ... */) or simply let the namespace fall back to regular fork/exec.
> I have a proof-of-concept version of the command executor which use PID namespaces (in combination with delay/escalation), and it feels like details around stack allocation and management could be captured in a new abstraction and make it a neat and nice subsystem to use.



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