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https://issues.apache.org/jira/browse/SOLR-17777?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SOLR-17777:
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Labels: pull-request-available (was: )
> After core deletion, we keep an empty metric registry for this core
> -------------------------------------------------------------------
>
> Key: SOLR-17777
> URL: https://issues.apache.org/jira/browse/SOLR-17777
> Project: Solr
> Issue Type: Bug
> Components: metrics
> Affects Versions: 9.8
> Reporter: Pierre Salagnac
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> I accidentally spotted a memory leak in metric registries. When a core is
> unloaded/deleted, we keep an empty metric registry for this core.
> This might have some very minor memory impacts if there is a very large
> number of collection creations and deletions, or core splits and moves during
> the server lifespan.
>
> This happens in {{SolrMetricManager.unregisterGauges()}} which is invoked
> after the registry was already dropped. As a side effect, this method
> recreates an empty registry.
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