[jira] [Assigned] (KAFKA-14672) Producer queue time does not reflect batches expired in the accumulator

["Kirk True (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-14672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kirk True reassigned KAFKA-14672:
---------------------------------

    Assignee: Kirk True

> Producer queue time does not reflect batches expired in the accumulator
> -----------------------------------------------------------------------
>
>                 Key: KAFKA-14672
>                 URL: https://issues.apache.org/jira/browse/KAFKA-14672
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Jason Gustafson
>            Assignee: Kirk True
>            Priority: Major
>
> The producer exposes two metrics for the time a record has spent in the accumulator waiting to be drained:
>  * `record-queue-time-avg`
>  * `record-queue-time-max`
> The metric is only updated when a batch is ready to send to a broker. It is also possible for a batch to be expired before it can be sent, but in this case, the metric is not updated. This seems surprising and makes the queue time misleading. The only metric I could find that does reflect batch expirations in the accumulator is the generic `record-error-rate`. It would make sense to let the queue-time metrics record the time spent in the queue regardless of the outcome of the record send attempt.



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