[ http://issues.apache.org/jira/browse/HADOOP-341?page=all ]

Arun C Murthy updated HADOOP-341:
---------------------------------

    Attachment: distcp2.patch

Verified patch for the TestCopyFiles junit test.

thanks,
Arun

> Enhance distcp to handle *http* as a 'source protocol'.
> -------------------------------------------------------
>
>          Key: HADOOP-341
>          URL: http://issues.apache.org/jira/browse/HADOOP-341
>      Project: Hadoop
>         Type: Improvement

>   Components: util
>     Reporter: Arun C Murthy
>  Attachments: distcp.patch, distcp2.patch
>
> Requirements:
>   Presently distcp recursively copies a directory from one dfs to another 
> i.e. both source and destination of of the *dfs* protocol.
>   Enhance it to handle *http* as the source protocol i.e. support copying 
> files from arbitrary http-based sources into the dfs.
> Design:
>   
>   Follow distcp's current design: one map task per file which needs to be 
> copied.
>   Caveat: distcp handles *recursive* copying by listing sub-directories; this 
> is not as feasible with a http-based source since things like 
> 'fancy-indexing' might not be enabled on the web-server (for all 
> sub-locations recursively too), and even if it is enabled it will mean 
> tedious parsing of the html served to glean the sub-directories etc. Hence 
> the idea is to support an input file (via a -f option) which contains a list 
> of the http-based urls which represent multiple source files.

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