When I run the sort job, I found when there are 70 reduce tasks running and no one completed, the progress bar shows that it has finished about 80%, so how the mapreduce mechnism to caculate this?
Also, when I run a job, as we know, we can determine the number of total reduce tasks through setNumReduceTasks() function, but how to determine the reducer number(I mean the tasktracker number which run the reduce task) being used? Thanks! Stan. Lee
