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https://issues.apache.org/jira/browse/HADOOP-1563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12511237
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Doug Cutting commented on HADOOP-1563:
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Should HTML scraping prove inadequate, WebDav might be useful for this. Its
PROPFIND method permits directory enumeration.
http://www.webdav.org/specs/rfc2518.html#METHOD_PROPFIND
> Create FileSystem implementation to read HDFS data via http
> -----------------------------------------------------------
>
> Key: HADOOP-1563
> URL: https://issues.apache.org/jira/browse/HADOOP-1563
> Project: Hadoop
> Issue Type: New Feature
> Components: fs
> Affects Versions: 0.14.0
> Reporter: Owen O'Malley
> Assignee: Chris Douglas
> Attachments: httpfs.patch
>
>
> There should be a FileSystem implementation that can read from a Namenode's
> http interface. This would have a couple of useful abilities:
> 1. Copy using distcp between different versions of HDFS.
> 2. Use map/reduce inputs from a different version of HDFS.
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