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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2060) DFS client RPCs using protobufs
Date Tue, 02 Aug 2011 18:10:29 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13078327#comment-13078327
] 

Allen Wittenauer commented on HDFS-2060:
----------------------------------------

Are protobufs endian-aware?  In other words, if I have a SPARC NN and Intel DNs, will everything
work or will it fail like it does now?  (Having a non-Intel box for the NN is highly desirable
due to TLB issues...)

> DFS client RPCs using protobufs
> -------------------------------
>
>                 Key: HDFS-2060
>                 URL: https://issues.apache.org/jira/browse/HDFS-2060
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hdfs-2060-getblocklocations.txt
>
>
> The most important place for wire-compatibility in DFS is between clients and the cluster,
since lockstep upgrade is very difficult and a single client may want to talk to multiple
server versions. So, I'd like to focus this JIRA on making the RPCs between the DFS client
and the NN/DNs wire-compatible using protocol buffer based serialization.

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