Edoardo Comar created KAFKA-4982:
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Summary: Add listener tag to socket-server-metrics.connection-...
metrics
Key: KAFKA-4982
URL: https://issues.apache.org/jira/browse/KAFKA-4982
Project: Kafka
Issue Type: Improvement
Reporter: Edoardo Comar
Metrics in socket-server-metrics like connection-count connection-close-rate
etc are tagged with networkProcessor:<id>
where the id of a network processor is just a numeric integer.
If you have more than one listener (eg PLAINTEXT, SASL_SSL, etc.), the id just
keeps incrementing and when looking at the metrics it is hard to match the
metric tag to a listener.
You need to know the number of network threads and the order in which the
listeners are declared in the brokers' server.properties.
We should add a tag showing the listener label, that would also make it much
easier to group the metrics in a tool like grafana
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