通过hadoop自带的demo运行单词统计

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 share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.3.jar wordcount /wc_input /output

12）hadoop fs -ls /output

13）hadoop fs -cat /output/part-r-00000