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https://issues.apache.org/jira/browse/KAFKA-3473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16311911#comment-16311911
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ASF GitHub Bot commented on KAFKA-3473:
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lindong28 opened a new pull request #4392: KAFKA-3473; More Controller Health
Metrics (KIP-237)
URL: https://github.com/apache/kafka/pull/4392
This patch adds a few metrics that are useful for monitoring controller
health. See KIP-237 for more detail.
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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> KIP-237: More Controller Health Metrics
> ---------------------------------------
>
> Key: KAFKA-3473
> URL: https://issues.apache.org/jira/browse/KAFKA-3473
> Project: Kafka
> Issue Type: Improvement
> Components: controller
> Affects Versions: 1.0.1
> Reporter: Jiangjie Qin
> Assignee: Dong Lin
> Fix For: 1.1.0
>
>
> Currently controller appends the requests to brokers into controller channel
> manager queue during state transition. i.e. the state transition are
> propagated asynchronously. We need to track the request queue time on the
> controller side to see how long the state propagation is delayed after the
> state transition finished on the controller.
> We also want to have metrics to monitor the ControllerEventManager queue size
> and the average time it takes for a event to wait in this queue before being
> processed.
> See
> https://cwiki.apache.org/confluence/display/KAFKA/KIP-237%3A+More+Controller+Health+Metrics
> for more detail.
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