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https://issues.apache.org/jira/browse/KAFKA-1275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13923034#comment-13923034
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Joe Stein commented on KAFKA-1275:
----------------------------------

ah ha! got it now :) VERY COOL.

So the KeyedMessage val key:K is the primaryKey key (which is what is used to 
compact all older matching primary key messages leaving only the latest value 
(which for the use case is the only thing that would matter)) and the val 
partKey: Any is the partition key thrown away for deciding what partition to go 
on (same as < 0.8.1)

Thanks!!!!

> fixes for quickstart documentation
> ----------------------------------
>
>                 Key: KAFKA-1275
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1275
>             Project: Kafka
>          Issue Type: Bug
>          Components: website
>    Affects Versions: 0.8.1
>            Reporter: Evan Zacks
>            Assignee: Jay Kreps
>            Priority: Minor
>              Labels: documentation
>             Fix For: 0.8.1
>
>         Attachments: KAFKA-1275-quickstart-doc.patch
>
>
> The quickstart guide refers to commands that no longer exist in the master 
> git branch per changes in KAFKA-554.
> If changes for the documentation to match 0.8.1 are already in development 
> elsewhere, please feel free to discard this issue.



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