用python编写MapReduce??????提交HADOOP集群运行：??????hadoop jar hadoop-1.2.1/contrib/streaming/hadoo
用python编写MapReduce
??????提交HADOOP集群运行：
??????hadoop jar hadoop-1.2.1/contrib/streaming/hadoop-streaming-1.2.1.jar -input input -output output-streaming-python??-mapper /home/ysc/mapper.py -reducer /home/ysc/reducer.py