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From "Ismael Juma (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-6330) KafkaZkClient request queue time metric
Date Fri, 08 Dec 2017 15:53:00 GMT
Ismael Juma created KAFKA-6330:

             Summary: KafkaZkClient request queue time metric
                 Key: KAFKA-6330
                 URL: https://issues.apache.org/jira/browse/KAFKA-6330
             Project: Kafka
          Issue Type: Bug
          Components: zkclient
            Reporter: Ismael Juma

KafkaZkClient have a latency metric which is the time it takes to send a request and receive
the corresponding response.

If ZooKeeperClient's `maxInFlightRequests` (10 by default) is reached, a request may be held
for some time before sending starts. This time is not currently measured and it may be useful
to know if requests are spending longer than usual in the `queue` (conceptually as the current
implementation doesn't use a queue).

This would require a KIP.

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