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https://issues.apache.org/jira/browse/SOLR-17628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18003627#comment-18003627
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Houston Putman commented on SOLR-17628:
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I'm not worried about back compat of {{{}wt=prometheus{}}}. If this is just
affecting that, go ahead and back port to 9_9. If it's affecting the
long-living metric output names (like wt=xml or wt=json), then we should keep
the back-compat option in the 9x and 9_9 branches and document the deprecation.
> Add query quantiles metrics to prometheus endpoint
> ---------------------------------------------------
>
> Key: SOLR-17628
> URL: https://issues.apache.org/jira/browse/SOLR-17628
> Project: Solr
> Issue Type: Improvement
> Components: metrics
> Reporter: Matthew Biscocho
> Priority: Major
> Labels: pull-request-available
> Fix For: 9.9
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> When exposing prometheus metrics with SOLR-10654 exporting metrics was mostly
> straight forward except for query metric quantiles. Things such as average
> request times exists with the current prometheus internal formatters. But
> Dropwizard gauges can have more complex types in their data structures and
> quantiles fell in that bucket so at the time, exporting these quantiles
> wasn't straight forward. I think these metrics would be very beneficial to
> finally add in and export.
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