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https://issues.apache.org/jira/browse/SOLR-15081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17266907#comment-17266907
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David Smiley commented on SOLR-15081:
-------------------------------------
I tested this manual today, and it looks good. I'll commit Tuesday, if I get
no further feedback.
> Metrics per core: report leader true/false and replica state
> ------------------------------------------------------------
>
> Key: SOLR-15081
> URL: https://issues.apache.org/jira/browse/SOLR-15081
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: metrics
> Reporter: David Smiley
> Priority: Major
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> The core level metrics hold some interesting information, but I don't see
> information pertaining to the SolrCloud status of the core. In particular,
> I'd like to see the leader status here, and also the replica state. The
> use-case I have in mind is enabling the Prometheus Exporter to get the doc
> count (and maybe other basics) of only the leader replicas, thereby counting
> unique documents instead of a fully replicated figure. This is an
> approximation to doing a match-all-docs query on all collections, but is a
> more sound approach when one has orders of magnitude more collections than
> nodes.
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