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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3809) Make BKJM use protobufs for all serialization with ZK
Date Thu, 06 Sep 2012 18:31:10 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13449906#comment-13449906
] 

Uma Maheswara Rao G commented on HDFS-3809:
-------------------------------------------

Branch-2 merge is not trivial merge as some changes for BookKeeperJournalManager went only
into trunk.
We may have to backport it separately.

@Ivan, do you want to take a stab at it?

Couple of JIRAs went into trunk, they are not in Branch-2 are HDFS-3573, HDFS-3695 etc.
                
> 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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