Difference between metrics.json and widgets.json for Ambari Service.

[shweta <sh...@gmail.com>]

Hi All,

I can see that sample metrics.json has couple of attributes for GC.
 "metrics/jvm/gc/runs/$1": {
              "metric": "jvm.gc.runs.(\\w+)",
              "pointInTime": true,
              "temporal": true
            },
            "metrics/jvm/gc/time/$1": {
              "metric": "jvm.gc.time.(\\w+)",
              "pointInTime": true,
              "temporal": true
            }

However widget.json does not have anything for information regarding
gathering GC parameters. I would like to gather GC metrics also. When I see
on Ambari I cannot get a widget for same probably for same reason.
Is there any specific reason why GC params are not included in widget.json
as given in 
https://cwiki.apache.org/confluence/display/NIFI/Ambari+Metrics.

Thanks,
Shweta




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Re: Difference between metrics.json and widgets.json for Ambari Service.

[Bryan Bende <bb...@gmail.com>]

Shweta,

The GC metrics are sent over with the name of the garbage collector in the
metric name. In metrics.json it allows defining metrics with a wildcard,
but you can't define widgets without knowing the metric name ahead of time.
Currently it is a limitation of Ambari and you can't get the GC metrics
displayed with the example provided.

-Bryan

On Sun, Feb 7, 2016 at 11:22 AM, shweta <sh...@gmail.com> wrote:

> Hi All,
>
> I can see that sample metrics.json has couple of attributes for GC.
>  "metrics/jvm/gc/runs/$1": {
>               "metric": "jvm.gc.runs.(\\w+)",
>               "pointInTime": true,
>               "temporal": true
>             },
>             "metrics/jvm/gc/time/$1": {
>               "metric": "jvm.gc.time.(\\w+)",
>               "pointInTime": true,
>               "temporal": true
>             }
>
> However widget.json does not have anything for information regarding
> gathering GC parameters. I would like to gather GC metrics also. When I see
> on Ambari I cannot get a widget for same probably for same reason.
> Is there any specific reason why GC params are not included in widget.json
> as given in
> https://cwiki.apache.org/confluence/display/NIFI/Ambari+Metrics.
>
> Thanks,
> Shweta
>
>
>
>
> --
> View this message in context:
> http://apache-nifi-developer-list.39713.n7.nabble.com/Difference-between-metrics-json-and-widgets-json-for-Ambari-Service-tp7197.html
> Sent from the Apache NiFi Developer List mailing list archive at
> Nabble.com.
>