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From Neil Conway <neil.con...@gmail.com>
Subject Re: Review Request 57167: Updated quota handler logic for hierarchical roles.
Date Fri, 10 Mar 2017 17:00:20 GMT


> On March 9, 2017, 9:39 p.m., Michael Park wrote:
> > src/master/quota_handler.cpp
> > Lines 469-487 (original), 583-605 (patched)
> > <https://reviews.apache.org/r/57167/diff/2/?file=1660312#file1660312line584>
> >
> >     I think we should be able to use `strings::tokenize(request.url.path, "/", 3)`
here.

Personally I think the current coding is clearer, albeit more verbose. Also `strings::tokenize`
skips empty tokens (e.g., `//`), which probably isn't the behavior we want here.


- Neil


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On March 9, 2017, 4:44 p.m., Neil Conway wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/57167/
> -----------------------------------------------------------
> 
> (Updated March 9, 2017, 4:44 p.m.)
> 
> 
> Review request for mesos and Michael Park.
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> The quota'd resources for a nested role are "included" within the
> quota'd resources for that role's parent. Hence, the quota of a node
> must always be greater than or equal to the sum of the quota'd resources
> of that role's children.
> 
> When creating and removing quota, we must ensure that this invariant is
> not violated.
> 
> When computing the cluster capacity heuristic, we must ensure that we do
> not "double-count" quota'd resources: e.g., if the cluster has a total
> capacity of 100 CPUs, role "x" has a quota guarantee of 80 CPUs, and
> role "x/y" has a quota guarantee of 40 CPUs, this does NOT violate the
> cluster capacity heuristic.
> 
> 
> Diffs
> -----
> 
>   src/master/quota_handler.cpp ce1f0644a56e85a99d8c3742d00940a1bfae3be3 
>   src/tests/hierarchical_allocator_tests.cpp cdf1f15b7802439b28405ca8f6634ce83e886630

>   src/tests/master_quota_tests.cpp e109656492bc5ac65e398b6b61e7321072b162d3 
> 
> 
> Diff: https://reviews.apache.org/r/57167/diff/2/
> 
> 
> Testing
> -------
> 
> `make check`
> 
> 
> Thanks,
> 
> Neil Conway
> 
>


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