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https://issues.apache.org/jira/browse/KAFKA-1535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14059287#comment-14059287
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Jay Kreps commented on KAFKA-1535:
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Yes I think that is correct. The current behavior is basically an optimization 
to avoid sending all the nodes. However this means if you are only sending to a 
single partition you may only have the host/port info for one machine, if that 
machine goes down you don't have another broker to go to. Since there shouldn't 
be more than a few hundred brokers, sending the full host/port for all of them 
should be okay and fixes this scenario.

> return all live brokers in TopicMetadataResponse
> ------------------------------------------------
>
>                 Key: KAFKA-1535
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1535
>             Project: Kafka
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 0.8.2
>            Reporter: Jun Rao
>              Labels: newbie
>
> Currently, we only return the brokers that have assigned replicas for a topic 
> in TopicMetadataResponse. The new producer will use those brokers for 
> refreshing metadata. Now suppose that we stop all those brokers, copy all 
> local data to some new hosts and then restart those hosts (with the original 
> broker id). There is no way for the new producer to automatically get the 
> information about the new brokers since all old brokers are gone.



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