Hello, I mentioned this issue before for the case of map tasks. I have 43 reduce tasks, 42 completed, 1 pending and 0 running. This is the case for the last 30 minutes. A pictur(tiff) of the job tracker can be found here( http://www.stat.purdue.edu/~sguha/mr.tiff ), since I haven't canceled the job, i can send logs and output if anyone requires.
Regards Saptarshi