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From "Tsz Wo (Nicholas), SZE (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2316) webhdfs: a complete FileSystem implementation for accessing HDFS over HTTP
Date Mon, 07 Nov 2011 21:16:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13145812#comment-13145812

Tsz Wo (Nicholas), SZE commented on HDFS-2316:

> Regarding #3, having params being case sensitive it does not mean they have to be all
lowercase. ...

This is a problem of case sensitive names: people have different preferences.  From the people
I talked so far, if the names are case sensitive, some prefer lowercase and some prefer camelCase.
 However, if the names are case insensitive, everyone is fine (they won't ask for case sensitive.)

> Regarding #4, Having 'name' and 'localname' is not clear when you'll have one or the
other. ...

I recall that full path had been sent in RPC through FileStatus but there were some issues
and then HdfsFileStatus with "localName" was added.  I think we should not make the same mistake
again.  Does "pathSuffix" sound good to you?

> Regarding #5, My issue here is that having an extra nested level for a possible conversion
to XML. ...

We should support XML in the near future since some users may prefer XML over JSON.

> Regarding #6, I disagree, ...

I see your point.  Are you going to use WebHdfsFileSystem in HDFS for hoop but not adding
another FileSystem implementation?

> 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, WebHdfsAPI20111103.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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