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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3809) Make BKJM use protobufs for all serialization with ZK
Date Tue, 30 Oct 2012 18:24:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13487094#comment-13487094
] 

Robert Joseph Evans commented on HDFS-3809:
-------------------------------------------

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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