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https://issues.apache.org/jira/browse/SOLR-4735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15715931#comment-15715931
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Andrzej Bialecki commented on SOLR-4735:
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bq. Will we be instantiating separate reporters for each `Group` then?
Part of the refactoring I'm working on is moving reporter configs to `solr.xml`
under `<solr><metricReporters><reporter name="graphite" group="jvm"
class="..."/> ...` . Then appropriate reporters would be created for each group
at the time when the component that manages this group of metrics is
initialized (eg. "core" on SolrCore creation, "node" when `CoreContainer` is
loaded etc).
Regarding reporters that could take multiple registries ... yeah, it seems a
waste to create separate reporters for each core if they have identical
configs. I'm not sure yet how to solve this - eg. for JMX reporting any sort of
aggregate reporter would have to create multiple `JMXReporter`s anyway, one per
registry, because that's how the API is implemented.
bq. it would be nice if we could just specify which registry we'd like a
reporter to attach to
Hmm, we could perhaps use either `group` or `registry` attribute in the
reporter config.
> Improve Solr metrics reporting
> ------------------------------
>
> Key: SOLR-4735
> URL: https://issues.apache.org/jira/browse/SOLR-4735
> Project: Solr
> Issue Type: Improvement
> Reporter: Alan Woodward
> Assignee: Andrzej Bialecki
> Priority: Minor
> Attachments: SOLR-4735.patch, SOLR-4735.patch, SOLR-4735.patch,
> SOLR-4735.patch
>
>
> Following on from a discussion on the mailing list:
> http://search-lucene.com/m/IO0EI1qdyJF1/codahale&subj=Solr+metrics+in+Codahale+metrics+and+Graphite+
> It would be good to make Solr play more nicely with existing devops
> monitoring systems, such as Graphite or Ganglia. Stats monitoring at the
> moment is poll-only, either via JMX or through the admin stats page. I'd
> like to refactor things a bit to make this more pluggable.
> This patch is a start. It adds a new interface, InstrumentedBean, which
> extends SolrInfoMBean to return a
> [[Metrics|http://metrics.codahale.com/manual/core/]] MetricRegistry, and a
> couple of MetricReporters (which basically just duplicate the JMX and admin
> page reporting that's there at the moment, but which should be more
> extensible). The patch includes a change to RequestHandlerBase showing how
> this could work. The idea would be to eventually replace the getStatistics()
> call on SolrInfoMBean with this instead.
> The next step would be to allow more MetricReporters to be defined in
> solrconfig.xml. The Metrics library comes with ganglia and graphite
> reporting modules, and we can add contrib plugins for both of those.
> There's some more general cleanup that could be done around SolrInfoMBean
> (we've got two plugin handlers at /mbeans and /plugins that basically do the
> same thing, and the beans themselves have some weirdly inconsistent data on
> them - getVersion() returns different things for different impls, and
> getSource() seems pretty useless), but maybe that's for another issue.
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