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@Deepak, in the description, I see you mentioned:
> However, in certain cases the network creator doesn't need port mapping 
> functionality and just want to access bridge plugin.

I am a bit confused about the real use case, if the network creator doesn't 
need port mapping functionality, why not just using bridge plugin directly? 
Using port-mapper plugin but cutting its port mapping functionality just for 
using bridge plugin seems not an efficient way. I am not sure why the 
port-mapper plugin is needed in this case.

> In this case, the creator may not supply `args` in cni config which will 
> makes mesos port mapper plugin to fail. This patch makes `args` in cni config 
> optional for mesos port mapper plugin

What do you mean for `the creator`? If it is Mesos agent, then I think its 
`network/cni` isolator will always supply `args` to port mapper plugin.

- Qian Zhang


On Sept. 1, 2017, 12:16 a.m., Deepak Goel wrote:
> 
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> https://reviews.apache.org/r/62017/
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> 
> (Updated Sept. 1, 2017, 12:16 a.m.)
> 
> 
> Review request for mesos and Avinash sridharan.
> 
> 
> Bugs: mesos-7923
>     https://issues.apache.org/jira/browse/mesos-7923
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> Mesos port mapper cni plugin is a wrapper around bridge plugin
> to add port mapping functionality to bridge plugin. However, in
> certain cases the network creator doesn't need port mapping
> functionality and just want to access bridge plugin. In this case,
> the creator may not supply `args` in cni config which will makes
> mesos port mapper plugin to fail. This patch makes `args` in cni
> config optional for mesos port mapper plugin
> 
> 
> Diffs
> -----
> 
>   
> src/slave/containerizer/mesos/isolators/network/cni/plugins/port_mapper/port_mapper.cpp
>  43cf3e44a55c56dc8195c9cd05f6edd8bf13d448 
> 
> 
> Diff: https://reviews.apache.org/r/62017/diff/1/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Deepak Goel
> 
>

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