> On Nov. 10, 2015, 1:59 p.m., Jojy Varghese wrote:
> > src/slave/containerizer/mesos/provisioner/docker/store.cpp, line 136
> > <https://reviews.apache.org/r/39331/diff/5/?file=1120529#file1120529line136>
> >
> >     Wondering if you need to pass "recursive" (true) to mkdir. This flag 
> > ensures that the the whole path of dierctory is created as needed. If its 
> > already existing, it wont create one.

If "recursive" is set as false explicitly, for the case to mkdir 
/abc/ef/ghi
it would return an error if we do not have /abc/ef existed.
We should want it true to create directory tree.


- Gilbert


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On Nov. 11, 2015, 9:49 a.m., Gilbert Song wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/39331/
> -----------------------------------------------------------
> 
> (Updated Nov. 11, 2015, 9:49 a.m.)
> 
> 
> Review request for mesos, Anand Mazumdar, Jie Yu, Jojy Varghese, and Timothy 
> Chen.
> 
> 
> Bugs: MESOS-3736
>     https://issues.apache.org/jira/browse/MESOS-3736
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> Support docker local store pull image simultaneously
> 
> 
> Diffs
> -----
> 
>   src/slave/containerizer/mesos/provisioner/docker/store.hpp 
> 95e46b9914c018b3e2472f98a54bc33ff9a46e17 
>   src/slave/containerizer/mesos/provisioner/docker/store.cpp 
> 6fdb85b3d55339556b0982598d2e5258f6159466 
>   src/tests/containerizer/provisioner_docker_tests.cpp 
> 2efe64f7896beb97f14aa2754569bd8383a67ac7 
> 
> Diff: https://reviews.apache.org/r/39331/diff/
> 
> 
> Testing
> -------
> 
> make check (ubuntu14.04 + clang-3.6)
> 
> *This is not ready to be merged.
> *Still considering two question:
>  1. Handling simultaneous failure. If the first request is called and is 
> written into the hashmap. All the other requests will be waiting for the 
> future of the first request. But because its return type is 
> 'Future<vector<string>>', if its future status is 'FAILED/DISCARDED', the 
> other requests will be waiting forever. 
>     Solved by logic check: if it is the first call to get() Image_A, promise 
> associate with metadateManager->get(). If not, check whether that promised 
> future failed/discarded. If yes, over write to the hashmap.
>     
>  2. The current hashmap uses 'stringify(image::name)' as key, but it may not 
> be unique because there is chance that layer_ids can be changed. 
>     One solution is to have 'stringify(image)' as key.
> 
> 
> Thanks,
> 
> Gilbert Song
> 
>

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