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https://issues.apache.org/jira/browse/HDFS-3809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13449801#comment-13449801
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Ivan Kelly commented on HDFS-3809:
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We use it later in HDFS-3810. I can move it to that patch, but if it's only a
small issue, i think it'd better to leave it here to push this patch.
> 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-3809.diff, 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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