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Posted to dev@kafka.apache.org by "Jason Gustafson (Jira)" <ji...@apache.org> on 2023/02/02 00:03:00 UTC
[jira] [Created] (KAFKA-14672) Producer queue time does not reflect batches expired in the accumulator
Jason Gustafson created KAFKA-14672:
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Summary: 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
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 drained for sending to the broker. It is also possible for a batch to be expired before it can be drained, 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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