brandboat opened a new pull request, #15668: URL: https://github.com/apache/kafka/pull/15668
related to KAFKA-16477, After profiling the kafka tests, tons of `client-metrics-reaper` thread not cleanup after BrokerServer shutdown. The thread `client-metrics-reaper` comes from [ClientMetricsManager#expirationTimer](https://github.com/apache/kafka/blob/a2ee0855ee5e73f3a74555d52294bb4acfd28945/server/src/main/java/org/apache/kafka/server/ClientMetricsManager.java#L115), and BrokerServer#shudown doesn't close ClientMetricsManager which let the thread still runs in background. ### 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
