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https://issues.apache.org/jira/browse/SOLR-18172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18068249#comment-18068249
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ASF subversion and git services commented on SOLR-18172:
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Commit 04eed86e039e69bced944b14e8bcf1fd4f7eaf08 in solr's branch
refs/heads/branch_10_0 from Jan Høydahl
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=04eed86e039 ]
SOLR-18172 Declare OTEL metrics as BETA in Solr 10 (#4235)
(cherry picked from commit ef5eaa255dd990de553cf183c163467ea38425bc)
> Declare OTEL metrics as BETA in Solr 10
> ---------------------------------------
>
> Key: SOLR-18172
> URL: https://issues.apache.org/jira/browse/SOLR-18172
> Project: Solr
> Issue Type: Bug
> Components: documentation, metrics
> Reporter: Jan Høydahl
> Assignee: Jan Høydahl
> Priority: Major
> Labels: pull-request-available
> Fix For: 10.0
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> Ref discussion
> [https://lists.apache.org/thread/0d7fp80p39tfn95kdbq0fychjd1lsbl2]
> In 10.0 we shipped a brand new metrics system powered by OTEL
> instrumentation. It has diferent metric names, and is not backward compatible
> with the solr exporter from 9.x
> We are in the process of building some Grafana boards for it, which uncover
> needs for some changes.
> We decided to change internal and OTLP metric names from underscore to dot
> separators (https://github.com/apache/solr/pull/4223) to align with OTEL
> semantic conventions.
> We found two metrics that are pure duplicates with different names.
> Clearly, there is a need for some changes and stabilization of this brand new
> feature.
> Looking back we should have declared the feature as BETA and experimental in
> 10.0, but we did not.
> I therefore propose that we declare it a BETA feature now, by adding a
> disclaimer in Ref Guide and send an [ANNOUNCE] email to the lists.
> As 10.0 is still brand new and likely not yet in production many places, and
> even fewer depending on the new metrics names, we could retroactively delcare
> it BETA from version 10.0.
> That will allow us to tweak things in the next few minor versions. Perhaps we
> want to rename a few metrics with better names. Perhaps some need to change
> slightly.
> It is unfortunate to do such things after a release, but it is better to do
> it now when 19.0 is still fresh. The longer we wait the harder to justify
> changes.
> If the PMC agrees (I don't think we need a vote), I can draft an announce
> mail and a PR against branch_10_0 ref guide.
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