MapReduce algorithm Form VI: Only map to fight alone

Case SIX: Map direct output alone

Never used this map to output the mode alone, even if the output of some simple I will pass the reduce output, but found that the map output is a bit different from what I expected, I always thought that the shuffle process will be at the end of the map, reduce the beginning of the There will be a merger, but shuffle only do the division, sorting, and then directly listed out, this is a rise posture, before the merger of understanding, the return is a bit of a problem, indeed, Grandpa said the practice can come out the truth ~ ~ (Salute to Grandpa Mao, salute)

The code is very simple, there is nothing to explain, but the results have to be well-figured out, to see what can be used later, back to fill this problem ~ ~

MapReduce algorithm Form VI: Only map to fight alone