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src/slave/containerizer/mesos/isolators/xfs/utils.hpp (lines 45 - 47)
<https://reviews.apache.org/r/44946/#comment189495>

    Sorry it didn't occur to to me earlier but looking at the tests I realized 
that we need to return a Result.
    
    i.e.,
    
    ```
    Result<QuotaInfo> getProjectQuota(
        const std::string& path,
        prid_t projectId);
    ```
    
    because a zero limit is "no limit", hence `None`. We use `setProjectQuota` 
and `clearProjectQuota` to carefully spearate the two use cases so here I think 
it's justified to make zero quota a special type.
    
    (Plus we do this for `getProjectId()` already).


- Jiang Yan Xu


On March 31, 2016, 5:01 p.m., James Peach wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/44946/
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> 
> (Updated March 31, 2016, 5:01 p.m.)
> 
> 
> Review request for mesos, Jie Yu and Jiang Yan Xu.
> 
> 
> Bugs: MESOS-4828
>     https://issues.apache.org/jira/browse/MESOS-4828
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> Add utility functions to manipulate XFS project quotas.
> 
> 
> Diffs
> -----
> 
>   src/Makefile.am f22ae5b3bd9336a56c802e0e51d39d6cb675caf2 
>   src/slave/containerizer/mesos/isolators/xfs/utils.hpp PRE-CREATION 
>   src/slave/containerizer/mesos/isolators/xfs/utils.cpp PRE-CREATION 
>   src/tests/environment.cpp 90dbe9488bda6af26143934e196aab0d69dccec3 
> 
> Diff: https://reviews.apache.org/r/44946/diff/
> 
> 
> Testing
> -------
> 
> Make check. Manual verification. Tests in subsequent patches.
> 
> 
> Thanks,
> 
> James Peach
> 
>

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