Thank you.. On Sat, Apr 2, 2011 at 1:22 AM, Harsh J <[email protected]> wrote:
> Hello, > > (Inline reply.) > > On Fri, Apr 1, 2011 at 8:35 PM, ranjith k <[email protected]> wrote: > > hello. > > I am new to hadoop map reduce programming. I need to write a map reduce > > program. I have a input folder, it contain a 10 number of documents in > text > > format. My aim is to write a map reduce program that read each text file > and > > create the word count of each text file separately. My input split is > each > > line. The map function is called for each line of text. But i need my > file > > name in map function. How can i get the file name to my map function. > > This is covered in the docs as part of the Map/Reduce Tutorial itself. > Have a look at the table right below this para-link: > > http://hadoop.apache.org/common/docs/r0.20.0/mapred_tutorial.html#Task+JVM+Reuse > > > Similarly i need to write the output of each file separately, is it > > possible? > > You can achieve some levels of output file-naming using the > MultipleOutputs class. > > > My hadoop version is Hadoop 0.20.2. > > -- > Harsh J > http://harshj.com > -- Ranjith k +918129419842
