GitHub user iv-m opened a pull request: https://github.com/apache/kafka/pull/3002
KAFKA-5203: Metrics: fix resetting of histogram sample Without the histogram cleanup, the percentiles are calculated incorrectly after purging of one or more samples: event counts go out of sync with counts in histogram buckets, and bucket with lower value gets chosen for the given quantile. This change adds the necessary histogram cleanup. You can merge this pull request into a Git repository by running: $ git pull https://github.com/iv-m/kafka kafka-5203-percentiles-fix Alternatively you can review and apply these changes as the patch at: https://github.com/apache/kafka/pull/3002.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #3002 ---- commit 07c176a23ea11b6ba7a103d8aaf4867591ba9293 Author: Ivan A. Melnikov <i...@altlinux.org> Date: 2017-05-09T12:15:27Z KAFKA-5203: Metrics: fix resetting of histogram sample Without the histogram cleanup, the percentiles are calculated incorrectly after purging of one or more samples: event counts go out of sync with counts in histogram buckets, and bucket with lower value gets chosen for the given quantile. This change adds the necessary histogram cleanup. ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---