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https://issues.apache.org/jira/browse/KAFKA-5666?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yeva Byzek updated KAFKA-5666:
------------------------------
    Affects Version/s: 0.11.0.0

> Need feedback to user if consumption fails due to 
> offsets.topic.replication.factor=3
> ------------------------------------------------------------------------------------
>
>                 Key: KAFKA-5666
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5666
>             Project: Kafka
>          Issue Type: Improvement
>          Components: clients, consumer
>    Affects Versions: 0.11.0.0
>            Reporter: Yeva Byzek
>              Labels: newbie
>
> Introduced in 0.11: The offsets.topic.replication.factor broker config is now 
> enforced upon auto topic creation. Internal auto topic creation will fail 
> with a GROUP_COORDINATOR_NOT_AVAILABLE error until the cluster size meets 
> this replication factor requirement.
> Issue: Default is setting offsets.topic.replication.factor=3, but in 
> development and docker environments where there is only 1 broker, the offsets 
> topic will fail to be created when a consumer tries to consume and no records 
> will be returned.  As a result, the user experience is bad.  The user may 
> have no idea about this setting change and enforcement, and they just see 
> that `kafka-console-consumer` hangs with ZERO output. It is true that the 
> broker log file will provide a message (e.g. {{ERROR [KafkaApi-1] Number of 
> alive brokers '1' does not meet the required replication factor '3' for the 
> offsets topic (configured via 'offsets.topic.replication.factor'). This error 
> can be ignored if the cluster is starting up and not all brokers are up yet. 
> (kafka.server.KafkaApis)}}) but many users do not have access to the log 
> files or know how to get them.
> Suggestion: give feedback to the user/app if offsets topic cannot be created. 
>  For example, after some timeout.
> Workaround:
> Set offsets.topic.replication.factor=3



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