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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-341) Enhance distcp to handle *http* as a 'source protocol'.
Date Fri, 14 Jul 2006 07:47:30 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-341?page=all ]
Doug Cutting resolved HADOOP-341:

    Fix Version: 0.5.0
     Resolution: Fixed

I just committed this.  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
>      Fix For: 0.5.0
>  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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