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From "Alejandro Abdelnur (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2316) webhdfs: a complete FileSystem implementation for accessing HDFS over HTTP
Date Wed, 02 Nov 2011 01:01:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13141820#comment-13141820
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Alejandro Abdelnur commented on HDFS-2316:
------------------------------------------

@Nicholas,

* gethomedir is required as you don't know where the FS impl creates the home dir.
* The doAs parameter name was chosen to mimic the Java API, real.user is kind of confusing,
do you mean the proxy user or the doAs user. Plus when doing Kerberos you don't use user.name.
IMO doAs is a easier not to get confused.
* The GET_BLOCK_LOCATIONS private API, how are you differentiating private and public APIs?
* Oozie could use delegation token or it could use doAs.

                
> webhdfs: a complete FileSystem implementation for accessing HDFS over HTTP
> --------------------------------------------------------------------------
>
>                 Key: HDFS-2316
>                 URL: https://issues.apache.org/jira/browse/HDFS-2316
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: WebHdfsAPI20111020.pdf
>
>
> We current have hftp for accessing HDFS over HTTP.  However, hftp is a read-only FileSystem
and does not provide "write" accesses.
> In HDFS-2284, we propose to have webhdfs for providing a complete FileSystem implementation
for accessing HDFS over HTTP.  The is the umbrella JIRA for the tasks.

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