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.
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.