通过hadoop自带的demo运行单词统计(测试)

在家目录下操作:

1)mkdir input
2)cd  intput
3)echo “hello word” > file1.txt
4)echo “hello hadoop” > file2.txt
5)echo “hello mapreduce” >> file2.txt
6) more file2.txt
7) hadoop fs -mkdir  /wc_input
8) hadoop fs -ls /
9) hadoop fs -put ~/input/fi* /wc_input
10)hadoop fs -ls  /wc_input
11) hadoop jar /soft/wang/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.3.jar wordcount /wc_input /output(输出目录不能提前存在)
12)hadoop fs -ls /output
13)hadoop fs -text /output/part-r-00000

执行结果截图: