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Can you please expand on your last point regarding cleaning up a pid namespace? 
Does this only work in a container setting with a pid 1 init process that you 
kill? If only in this case, what are your thoughts on the best way to kill all 
processes in a pid namespace.

- Ian Downes


On July 29, 2013, 10:52 p.m., Eric Biederman wrote:
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/13045/
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> (Updated July 29, 2013, 10:52 p.m.)
> 
> 
> Review request for mesos, Benjamin Hindman, Ben Mahler, Ian Downes, and Vinod 
> Kone.
> 
> 
> Repository: mesos-git
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> 
> Description
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> cgroup_isolator: Isolate the exectuor and tasks in a pid namespace.
> 
> This has several advantages:
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> - It becomes impossible to send unix signals to processes outside of
>   the pid namespace.
> 
> - Forked processes can not escape the pid namespace no matter what they do.
> 
> - It becomes easy to cleanup a pid namespace because all processes are
>   killed when the first process the executor is killed.
> 
> 
> Diffs
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> 
>   src/slave/cgroups_isolator.cpp 0faf7d5 
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> Diff: https://reviews.apache.org/r/13045/diff/
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> 
> Testing
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> 
> make -j 8 check
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> And watched the tests pass.
> 
> 
> Thanks,
> 
> Eric Biederman
> 
>

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