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https://issues.apache.org/jira/browse/SOLR-17799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18029852#comment-18029852
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ASF subversion and git services commented on SOLR-17799:
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Commit 49e02946bed84fb7d5e1fd3832eaf64377b57c44 in solr's branch 
refs/heads/main from David Smiley
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=49e02946bed ]

SOLR-17799: add core attributes.


> Revamp segment merge metrics
> ----------------------------
>
>                 Key: SOLR-17799
>                 URL: https://issues.apache.org/jira/browse/SOLR-17799
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Kevin Liang
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 2h 20m
>  Remaining Estimate: 0h
>
> Based on current 
> [documentation|https://solr.apache.org/guide/solr/latest/deployment-guide/metrics-reporting.html#index-merge-metrics]
>  for segment merge metrics, there are two major groups of metrics emitted 
> (for currently actively running merges and for merges that have completed). 
> The actively running ones are gauges that can go up or down, while the ones 
> for completed are counters/timers.
> To make these metrics more consistent and aggregate-able, propose emitting 
> all metrics for merges as running counters for # of merges, # of segments, 
> and # of documents with a metric for each tracking started/completed (thus 
> active merges can be calculated via the current diff between the two).
> Relates to original feature from 
> https://issues.apache.org/jira/browse/SOLR-9854



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