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https://issues.apache.org/jira/browse/KAFKA-4824?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Clemens Valiente closed KAFKA-4824.
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> add unique identifier to clientId
> ---------------------------------
>
> Key: KAFKA-4824
> URL: https://issues.apache.org/jira/browse/KAFKA-4824
> Project: Kafka
> Issue Type: Improvement
> Components: consumer, streams
> Affects Versions: 0.10.2.0
> Reporter: Clemens Valiente
> Assignee: Clemens Valiente
> Priority: Minor
>
> As discussed with [~damianguy]
> streams clientId is set to applicationId-threadId-consumer which of course
> wouldn’t be unique if running multiple instances per host.
> *Example use case:*
> deployment as docker container on marathon so it might end up multiple times
> on the same host and of course they're all running with the same
> configuration. All clients on the same host would have the same clientid
> *Problem*
> Consumers running with the same client id make it hard to identify lagging
> consumers correctly
> *Potential solution:*
> Internally we do have a processId. It might make sense if we attached that to
> the clientId. it would then be unique across instances
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