Since the emergence of this technology and the benefits it brings, Migrates to the cloud. This gives rise to a large number of open source and proprietary platforms for the implementation of this technology. First of all we explain the fundamentals o

Hadoop完全分布式环境下的部分实例，包括单词计数、平均数、去重、表连接等程序。其中主机名为master(Hadoop some instances in a fully distributed environment, including a number of words, average, weight, table connection and other programs. The host is named master)