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https://issues.apache.org/jira/browse/SOLR-9854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17986613#comment-17986613
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Kevin Liang commented on SOLR-9854:
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[~ab] [~dsmiley] [~mlbiscoc] as I'm currently working on exporting these
metrics in prometheus format
(https://issues.apache.org/jira/browse/SOLR-17797), I've noticed some of the
discrepancies, in terms of what is being tracked, between the metrics for
historical merges vs. actively running merges. I'm happy to work on revamping
these metrics based on the discussion here (i.e. changing the current "running"
merge metrics to start/stop counters for merges, segments, and documents).
In doing this, I'd also like to enable these metrics by default rather than the
current enabling via solrconfig. Would there be any opposition to this?
> Collect metrics for index merges and index store IO
> ---------------------------------------------------
>
> Key: SOLR-9854
> URL: https://issues.apache.org/jira/browse/SOLR-9854
> Project: Solr
> Issue Type: Improvement
> Components: metrics
> Affects Versions: 6.4, 7.0
> Reporter: Andrzej Bialecki
> Assignee: Andrzej Bialecki
> Priority: Minor
> Fix For: 6.4, 7.0
>
> Attachments: SOLR-9854.patch, SOLR-9854.patch
>
>
> Using API for metrics management developed in SOLR-4735 we should also start
> collecting metrics for major aspects of {{IndexWriter}} operation, such as
> read / write IO rates, number of minor and major merges and IO during these
> operations, etc.
> This will provide a better insight into resource consumption and load at the
> IO level.
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