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From "Brock Noland (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4750) Support NFSv3 interface to HDFS
Date Fri, 03 May 2013 15:02:16 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4750?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13648478#comment-13648478
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Brock Noland commented on HDFS-4750:
------------------------------------

Brandon,

I took a quick look.

1) I see some e.printStackTrace(); directly around LOG.level().
2) I see a good number of LOG.level(msg + e); which eats the exception.
3) I don't see any concept of controlling export by hostname or ip range. FWWIW, that code
can probably be taken directly from the NFS4 proxy.

bq. the NFS gateway is tightly coupled with HDFS protocols

Can you speak to the reason you chose to use DFSClient directly as opposed to using FileSystem?

Brock
                
> Support NFSv3 interface to HDFS
> -------------------------------
>
>                 Key: HDFS-4750
>                 URL: https://issues.apache.org/jira/browse/HDFS-4750
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>    Affects Versions: 3.0.0
>            Reporter: Brandon Li
>            Assignee: Brandon Li
>         Attachments: HADOOP-NFS-Proposal.pdf, HDFS-4750.patch, nfs-trunk.patch
>
>
> Access HDFS is usually done through HDFS Client or webHDFS. Lack of seamless integration
with client’s file system makes it difficult for users and impossible for some applications
to access HDFS. NFS interface support is one way for HDFS to have such easy integration.
> This JIRA is to track the NFS protocol support for accessing HDFS. With HDFS client,
webHDFS and the NFS interface, HDFS will be easier to access and be able support more applications
and use cases. 
> We will upload the design document and the initial implementation. 

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