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Posted to dev@kafka.apache.org by "Kevin Lu (JIRA)" <ji...@apache.org> on 2017/10/25 23:21:00 UTC

[jira] [Created] (KAFKA-6123) MetricsReporter does not get auto-generated client.id

Kevin Lu created KAFKA-6123:
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             Summary: MetricsReporter does not get auto-generated client.id
                 Key: KAFKA-6123
                 URL: https://issues.apache.org/jira/browse/KAFKA-6123
             Project: Kafka
          Issue Type: Improvement
          Components: clients, metrics
    Affects Versions: 0.11.0.0
            Reporter: Kevin Lu
            Priority: Minor


When a {{MetricsReporter}} is configured for a client, it will receive the user-specified configurations via {{Configurable.configure(Map<String, ?> configs)}}. Likewise, {{ProducerInterceptor}} and {{ConsumerInterceptor}} receive user-specified configurations in their configure methods. 

The difference is when a user does not specify the {{client.id}} field, Kafka will auto-generate client ids (producer-1, producer-2, consumer-1, consumer-2, etc). This auto-generated {{client.id}} will be passed into the interceptors' configure method, but it is not passed to the {{MetricsReporter}} configure method.

This makes it harder to directly map {{MetricsReporter}} with the interceptors for the client when users do not specify the {{client.id}} field. The {{client.id}} can be determined from identifying a metric with the {{client.id}} tag, but this is hacky and requires traversal. 

It would be useful to have auto-generated {{client.id}} field also passed to the {{MetricsReporter}}.



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