Jiangjie Qin created KAFKA-3473:
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Summary: Add controller channel manager request queue time metric.
Key: KAFKA-3473
URL: https://issues.apache.org/jira/browse/KAFKA-3473
Project: Kafka
Issue Type: Improvement
Components: controller
Affects Versions: 0.10.0.0
Reporter: Jiangjie Qin
Assignee: Neha Narkhede
Fix For: 0.10.1.0
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.
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