Apoorv Mittal created KAFKA-17230:
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Summary: Kafka consumer client doesn't report node request-latency
metrics
Key: KAFKA-17230
URL: https://issues.apache.org/jira/browse/KAFKA-17230
Project: Kafka
Issue Type: Bug
Components: clients
Reporter: Apoorv Mittal
Assignee: Apoorv Mittal
Kafka Consumer client registers node/connection latency metrics in
[Selector.java|https://github.com/apache/kafka/blob/9d634629f29cd402a723d7e7bece18c8099065a4/clients/src/main/java/org/apache/kafka/common/network/Selector.java#L1359]
but the values against the metric is never recorded. This seems to be an issue
since inception. However, the same metric is also created for Kafka Producer
but the value is recorded for Kafka Producer in
[Sender.java|https://github.com/apache/kafka/blob/9d634629f29cd402a723d7e7bece18c8099065a4/clients/src/main/java/org/apache/kafka/clients/producer/internals/Sender.java#L1092].
Hence node - request-latency-max and request-latency-avg appears correctly for
Kafka Producer but is NaN for Kafka Consumer.
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