[jira] [Commented] (KAFKA-344) migration tool from 0.7 to 0.8

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

    [ https://issues.apache.org/jira/browse/KAFKA-344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13457175#comment-13457175 ] 

Jun Rao commented on KAFKA-344:
-------------------------------

Thanks for the draft patch. Very tricky to get right. It does seem to work. Good job! Look forward to the final patch.
                
> migration tool from 0.7 to 0.8
> ------------------------------
>
>                 Key: KAFKA-344
>                 URL: https://issues.apache.org/jira/browse/KAFKA-344
>             Project: Kafka
>          Issue Type: Sub-task
>          Components: core
>    Affects Versions: 0.8
>            Reporter: Jun Rao
>            Assignee: Yang Ye
>            Priority: Blocker
>              Labels: tools
>             Fix For: 0.8
>
>         Attachments: kafka_344_draft.patch
>
>   Original Estimate: 336h
>  Remaining Estimate: 336h
>
> Since 0.8 is a non-backward compatible release, we need a migration tool. One way to do that is to have a tool that can mirror data from an 0.7 Kafka cluster into an 0.8 Kafka cluster. Once the mirror is set up, we can then first migrate the consumers to the 0.8 cluster, followed by the producers. After that, we can decommission the 0.7 cluster. 

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