Hadoop学习之本地运行hadoop

[admin@hadoop1002 ~]$ cd /opt/module/hadoop-3.1.3/
[admin@hadoop1002 hadoop-3.1.3]$ mkdir wcinput

[admin@hadoop1002 hadoop-3.1.3]$ touch wcinput/word.txt
[admin@hadoop1002 hadoop-3.1.3]$ vim wcinput/word.txt

hadoop yarn
hadoop mapreduce
hello
hello yes
hadoop core

[admin@hadoop1002 hadoop-3.1.3]$ bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-3.1.3.jar wordcount wcinput/ ./wcoutput

 [admin@hadoop1002 hadoop-3.1.3]$ cat wcoutput/part-r-00000core    1hadoop  3hello   2mapreduce   1yarn    1yes 1

这样hadoop的本地运行就完成了。请大家观察理解，hadoop的用处。
请大家多多参考，多多指正。