I haven't gone through the whole thing, but getting the Configuration object via a static member "conf" set only during submission (main()) will not work - and is probably why there's an NPE.
Use the Context object in the map() call to get a configuration instance. That is the only right way I know of. i.e., change 124 to: groupTask = new GroupTask(context.getConfiguration(), groupID, PhotosDownload.outputPath, f.getPoolsInterface()); On Wed, May 25, 2011 at 9:37 PM, Michael Giannakopoulos <miccagi...@gmail.com> wrote: > Alright, I 'll send you the code (it's an amateur application). Any help is > appreciated! (Don't bother with the Flickrj API)... And something else, how > do you debug a map/reduce app so as to be sure what happens. I use eclipse > and hadoop's plugin for eclipse (Galileo). Thanks a lot! > -- Harsh J
