brandboat opened a new pull request, #16305: URL: https://github.com/apache/kafka/pull/16305
related to https://issues.apache.org/jira/browse/KAFKA-16942 per discussed in https://github.com/apache/kafka/pull/16231#discussion_r1635345881 Through the ConcurrentMapBenchmark, we observed that in scenarios where write operations (i.e., computeIfAbsent) constitute 10%, the get performance of CopyOnWriteMap is lower compared to ConcurrentHashMap. However, when iterating over entrySet and values, CopyOnWriteMap performs better than ConcurrentHashMap. In RecordAccumulator#nodeStats, the computeIfAbsent method is rarely triggered, and we only use the get method to read data. Therefore, switching to ConcurrentHashMap would gain better performance. ### Committer Checklist (excluded from commit message) - [ ] Verify design and implementation - [ ] Verify test coverage and CI build status - [ ] Verify documentation (including upgrade notes) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
