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https://issues.apache.org/jira/browse/HDFS-3809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13487094#comment-13487094
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Robert Joseph Evans commented on HDFS-3809:
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Thanks for doing that Uma. It looks like there is something about the build
scripts that is causing it, because hdfs.proto, where NameSpaceInfoProto is
defined, is more or less identical between trunk and branch-2.
> 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
> Fix For: 3.0.0, 2.0.3-alpha
>
> Attachments: 0004-HDFS-3809-for-branch-2.patch, 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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