Milind Jain commented on KAFKA-6520:

By broker you mean stopping the kafka-server while the consumer is still 
running and check the behaviour of the consumer? 

> When a Kafka Stream can't communicate with the server, it's Status stays 
> --------------------------------------------------------------------------------
>                 Key: KAFKA-6520
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6520
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>            Reporter: Michael Kohout
>            Assignee: Milind Jain
>            Priority: Major
>              Labels: newbie, user-experience
> When you execute the following scenario the application is always in RUNNING 
> state
>  1)start kafka
>  2)start app, app connects to kafka and starts processing
>  3)kill kafka(stop docker container)
>  4)the application doesn't give any indication that it's no longer 
> connected(Stream State is still RUNNING, and the uncaught exception handler 
> isn't invoked)
>  It would be useful if the Stream State had a DISCONNECTED status.
> See 
> [this|https://groups.google.com/forum/#!topic/confluent-platform/nQh2ohgdrIQ] 
> for a discussion from the google user forum.  
> [This|https://issues.apache.org/jira/browse/KAFKA-4564] is a link to a 
> related issue.

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