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https://issues.apache.org/jira/browse/HDFS-3809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uma Maheswara Rao G updated HDFS-3809:
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     Target Version/s: 3.0.0, 2.0.1-alpha
    Affects Version/s: 3.0.0
                       2.0.0-alpha
        Fix Version/s:     (was: 3.0.0)
    
> Make BKJM use protobufs for all serialization with ZK
> -----------------------------------------------------
>
>                 Key: HDFS-3809
>                 URL: https://issues.apache.org/jira/browse/HDFS-3809
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Ivan Kelly
>            Assignee: Ivan Kelly
>         Attachments: HDFS-3809.diff
>
>
> HDFS uses protobufs for serialization in many places. Protobufs allow fields 
> to be added without breaking bc or requiring new parsing code to be written. 
> For this reason, we should use them in BKJM also.

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