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Looks good! Just one new major comment around moving the code to the `mesos::v1::internal` namespace that would allow you to deal with naming ambiguities better. I was playing around with your patch and the following github gist already has fixes for all the new issues that I have raised.

https://gist.github.com/hatred/c0be071125f6715e9403f5673de1860f


src/launcher/http_command_executor.cpp (lines 80 - 92)
<https://reviews.apache.org/r/44424/#comment191210>

    Let's move this all out of the `mesos::internal` namespace. We typically have `using` declarations at the top of the cpp file.
    
    Also, I synced up with Vinod offline let's put all the cpp code in `mesos::v1::internal` namespace. Then, you won't have all the naming ambiguities that made you add the using declarations in `mesos::internal` namespace.



src/launcher/http_command_executor.cpp (line 94)
<https://reviews.apache.org/r/44424/#comment191211>

    Let's remove this out to the top of the file too. Also, let's break it into the following using declarations.
    
    ```cpp
    using process::Clock;
    using process::Future;
    using process::Owned;
    using process::Subprocess;
    using process::Timer;
    ```



src/launcher/http_command_executor.cpp (line 147)
<https://reviews.apache.org/r/44424/#comment191178>

    Can we log the type of received event here similar to:
    
    https://github.com/apache/mesos/blob/master/src/examples/long_lived_executor.cpp#L98



src/launcher/http_command_executor.cpp (line 184)
<https://reviews.apache.org/r/44424/#comment191179>

    Can we add a log for this similar to here:
    
    https://github.com/apache/mesos/blob/master/src/examples/long_lived_executor.cpp#L124
    
    You would need to separate out `ERROR` in it's own `case` statement for this.



src/launcher/http_command_executor.cpp (line 376)
<https://reviews.apache.org/r/44424/#comment191215>

    We should be able to remove the `slave::` prefix since we already include it.



src/launcher/http_command_executor.cpp (line 411)
<https://reviews.apache.org/r/44424/#comment191216>

    Ditto



src/launcher/http_command_executor.cpp (line 798)
<https://reviews.apache.org/r/44424/#comment191212>

    We have been renaming this method as `update` in the recent reviews to be more in sync with the `v1` API.


- Anand Mazumdar


On April 7, 2016, 2:13 p.m., Qian Zhang wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/44424/
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> 
> (Updated April 7, 2016, 2:13 p.m.)
> 
> 
> Review request for mesos, Anand Mazumdar and Vinod Kone.
> 
> 
> Bugs: MESOS-3558
>     https://issues.apache.org/jira/browse/MESOS-3558
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> Updated http_command_executor.cpp to use v1 API.
> 
> 
> Diffs
> -----
> 
>   src/launcher/http_command_executor.cpp PRE-CREATION 
> 
> Diff: https://reviews.apache.org/r/44424/diff/
> 
> 
> Testing
> -------
> 
> make check
> 
> 
> Thanks,
> 
> Qian Zhang
> 
>