Matthew Biscocho created SOLR-18456:
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Summary: Route all observable metric registration through
SolrMetricsContext
Key: SOLR-18456
URL: https://issues.apache.org/jira/browse/SOLR-18456
Project: Solr
Issue Type: Improvement
Reporter: Matthew Biscocho
SOLR-18442 was a leak caused by a single observable gauge whose registration
never reached SolrMetricsContext's closeables list, so its callback was never
unregistered and pinned every SolrIndexSearcher ever opened.
We should better protect devs from this in the future or if new observable
instruments get created by making it impossible to register an observable
metric without cleanup.{{{}{}}}
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