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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2284) RW Http access to HDFS
Date Wed, 07 Sep 2011 09:53:09 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13098819#comment-13098819

Tsz Wo (Nicholas), SZE commented on HDFS-2284:

BTW, the patch borrows many ideas from Hoop (Thanks Alejandro.)  I did not copy the code directly
from Hoop for the following reasons.

- need redirection from NN to DNs which is not present
- some operations done locally at NN which calls directly into namenode rather then rpc. 
(Hoop uses FileSystem interface to access HDFS.)
- some things tied to proxy and change of userid - not needed and so the code is simplified.
- we can reuse some of the existing HDFS classes and methods
- there are some libraries (e.g. SchedulerService, InstrumentationService, Hadoop interface,
etc.) in Hoop not needed here.

> RW Http access to HDFS
> ----------------------
>                 Key: HDFS-2284
>                 URL: https://issues.apache.org/jira/browse/HDFS-2284
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Sanjay Radia
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: h2284_20110902b.patch, h2284_20110904_0.20s.patch, h2284_20110904b_0.20s.patch,
h2284_20110905_0.20s.patch, h2284_20110906_0.20s.patch, h2284_20110906b.patch, h2284_20110906b_0.20s.patch,
h2284_20110906c.patch, h2284_20110906c_0.20s.patch, h2284_20110906d.patch
> HFTP allows on read access to HDFS via HTTP. Add RW HTTP access to HDFS)

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