摘要： To run this program, stage some data in HDFS:1. create a text file called input.txt that has one integer per line.我操作时将文件input.txt放在左面上(c:\user\kim\desktop\input.txt）上2. import that text file to HDFS via> hadoop fs -copyFromLocal input.txt input/SqrtJob/input.txt我操作时使用Hadoop Command Line工具，输入带命令是 阅读全文