ibenchhida created KAFKA-20667:
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Summary: O(N) ACL scan in StandardAuthorizerData.checkSection
Key: KAFKA-20667
URL: https://issues.apache.org/jira/browse/KAFKA-20667
Project: Kafka
Issue Type: Bug
Components: core
Affects Versions: 3.9.2
Reporter: ibenchhida
Root cause: checkSection() iterates all ACLs sharing the same resource
pattern via TreePSet.tailSet(), calling HashSet.contains per ACL × topic.
With 504 topics × 7001 ACLs → ~3.5M iterations per MetadataRequest.
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