Map Recude code doubt

[shwitzu]

Hello All,

I was wondering if our map reduce code can just return the location of the file? Or place the actual file in a given output directory by searching based on a keyword.

Let me make myself clear

If there are 100 image files in my HDFS and I want to extract one image file. If I give a keyword which matches the name of a file in my HDFS will my mapper and  reducer code be able to locate that file and put back the  original file in a given location??

Please let me know if you have need more information.

Thanks