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From David Yan <da...@datatorrent.com>
Subject Re: Creating a common metrics server for internal monitoring
Date Tue, 17 Nov 2015 23:12:37 GMT
Hi Ilya,

The AutoMetric interface is mostly designed for application-specific
metrics within an operator -- things like how many frauds are detected, or
the dollar amount processed.

We do have BufferServer bytes and queue tuple count (a.k.a. queue size) as
system metrics. If you have specific metrics that pertain to BufferServer
and CircularBuffer that you're interested in, please state them.  We should
probably add them to system metrics since it's probably useful in general.


On Tue, Nov 17, 2015 at 2:58 PM, Pramod Immaneni <pramod@datatorrent.com>

> Some of them are available in system stats like port queue size and are
> exposed via REST and to a stats listener that you can register via the API.
> Some of the others you mentioned can be added.
> On Tue, Nov 17, 2015 at 2:52 PM, Ganelin, Ilya <
> Ilya.Ganelin@capitalone.com>
> wrote:
> > Hi, all – presently Apex supports surfacing metrics via the AutoMetrics
> > interface, documented here:
> > http://docs.datatorrent.com/autometrics/
> >
> > However, this only provides utility to monitor operators. I would like to
> > provide a more general latency suite - fFor example, I would like to
> > instrument metrics around the BufferServer or the CircularQueue. Not
> > everything in Apex is an operator, and there are other components of the
> > system around which we may want explicit measurements or metrics. Is this
> > something that could exist? I know other projects like Spark have similar
> > efforts, although they are equally underdeveloped :)
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