why俺不是悟空

http://blog.youkuaiyun.com/yfkiss/article/details/7019022   2. aggregate class summary DoubleValueSum This class implements a value aggregator that sums up a sequence of double values. LongValueM...

-cmdenv  用于在提交作业时向Streaming进程设置环境变量，   1.参见《Hadoop权威指南 第二版》P187  2.Hadoop Streaming高级编程    http://dongxicheng.org/mapreduce/hadoop-streaming-advanced-programming/...

//TODO 说明           [xxuser@xxhost ~]$ hadoop jar $HADOOP_STREAMING_JAR \ > -input /test/ylb/mock_data/cv-pt-demo.txt \ > -output /test/ylb/mock_data/output/cv-pt-demo-10 \ > -mapper...