You can retrieve the filename in the new API as described here: http://search-hadoop.com/m/ZOmmJ1PZJqt1/map+input+filename&subj=Retrieving+Filename
In the old API, its available in the configuration instance of the mapper as key "map.input.file". See the table below this section http://hadoop.apache.org/common/docs/r0.20.2/mapred_tutorial.html#Task+JVM+Reuse for more such goodies. On Fri, Jul 15, 2011 at 5:44 PM, praveenesh kumar <[email protected]> wrote: > Hi, > How can I give filename as key to mapper ? > I want to know the occurence of word in set of docs, so I want to keep key > as filename. Is it possible to give input key as filename in map function ? > Thanks, > Praveenesh > -- Harsh J
