> On April 9, 2014, 1:02 p.m., Ben Mahler wrote:
> > 3rdparty/libprocess/include/process/metrics/metric.hpp, line 15
> > <https://reviews.apache.org/r/18718/diff/21/?file=553931#file553931line15>
> >
> >     Have you considered just calling this 'value'? Snapshot sounds a bit 
> > opaque as to what this function is to be used for.
> >     
> >     What is the purpose of this being an Option<double>? That part is not 
> > clear and seems unnecessary, when would None() be used?
> 
> Dominic Hamon wrote:
>     I considered 'snapshot', 'current' and 'value'. Value is too generic and 
> 'snapshot' was already in use as terminology when I started talking to 
> people. I'm happy to change this if we can get consensus ;)
>     
>     Option is necessary for Gauges. For instance, the system metrics 
> sometimes return 'None' when a value is not available.

As per discussion - use case for Option can be captured by Future failing.


- Dominic


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On April 9, 2014, 2:30 p.m., Dominic Hamon wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/18718/
> -----------------------------------------------------------
> 
> (Updated April 9, 2014, 2:30 p.m.)
> 
> 
> Review request for mesos, Benjamin Hindman and Ben Mahler.
> 
> 
> Bugs: MESOS-1036
>     https://issues.apache.org/jira/browse/MESOS-1036
> 
> 
> Repository: mesos-git
> 
> 
> Description
> -------
> 
> See summary
> 
> 
> Diffs
> -----
> 
>   3rdparty/libprocess/Makefile.am c785c4dd852eacaec1be11c68e0b0b95a328d96b 
>   3rdparty/libprocess/include/process/metrics/counter.hpp PRE-CREATION 
>   3rdparty/libprocess/include/process/metrics/gauge.hpp PRE-CREATION 
>   3rdparty/libprocess/include/process/metrics/metric.hpp PRE-CREATION 
>   3rdparty/libprocess/include/process/metrics/metrics.hpp PRE-CREATION 
>   3rdparty/libprocess/src/metrics/metrics.cpp PRE-CREATION 
>   3rdparty/libprocess/src/tests/metrics_tests.cpp PRE-CREATION 
> 
> Diff: https://reviews.apache.org/r/18718/diff/
> 
> 
> Testing
> -------
> 
> Added unit tests. make check.
> 
> 
> Thanks,
> 
> Dominic Hamon
> 
>

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