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https://issues.apache.org/jira/browse/HBASE-7233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13511171#comment-13511171
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Lars Hofhansl commented on HBASE-7233:
--------------------------------------

bq. Yeah, will have to keep versions on datablockencoding.
Will that be enough to have old clients talk to new server (or vice versa)? 
That's what Writable did, and it did not work so well. Client and Server have 
pre-negotiate what they understand?

                
> Serializing KeyValues when passing them over RPC
> ------------------------------------------------
>
>                 Key: HBASE-7233
>                 URL: https://issues.apache.org/jira/browse/HBASE-7233
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: stack
>            Priority: Blocker
>         Attachments: 7233.txt, 7233-v2.txt
>
>
> Undo KeyValue being a Writable.

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