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https://issues.apache.org/jira/browse/KAFKA-3473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16481742#comment-16481742
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Dong Lin commented on KAFKA-3473:
---------------------------------
[~wushujames] Could you tell me which docs you are referring to?
> 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
> Priority: Major
> Fix For: 2.0.0
>
>
> 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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