[jira] [Commented] (KAFKA-1535) return all live brokers in TopicMetadataResponse

["Jun Rao (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-1535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14058949#comment-14058949 ] 

Jun Rao commented on KAFKA-1535:
--------------------------------

A solution is to return all live brokers (in metadata cache) in TopicMetadataResponse. This doesn't change the wire protocol, just the list of brokers returned.

> 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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