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https://issues.apache.org/jira/browse/HBASE-7233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13510802#comment-13510802
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Matt Corgan commented on HBASE-7233:
------------------------------------

Most of the ProtocolBuffer uses are not performance critical and PB gives great 
flexibility and a well-known paradigm, but sending big chunks of Cells over the 
wire as fast as possible in a long scan is worth a special case i'd say.  Using 
the DataBlockEncoding stuff might consume roughly the same cpu as PB encoding 
on the server, but will save a ton of network bandwith for many tables and 
would be much easier for the client to decode.
                
> 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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