First check hadoop process.
jps
Note Only one process, hadoop not start
Start hadoop process
start-dfs.sh
start-yarn.sh
Process description appears as follows hadoop start successfully
Create a directory in the following data.txt file
Inside casually enter some English characters. As I entered the same
Enter hadoop directory
Create a / data / input folder structure in the cloud
bin/hdfs dfs -mkdir -p /data/input
Data.txt upload files to the cloud,
bin/hdfs dfs -put data.txt /data/input
View cloud / data / input folder below which files
bin/hdfs dfs -ls /data/input
This is what we upload data.txt file
Run share / hadoop / mapreduce / hadoop-mapreduce-examples-2.7.7.jar this java program, call the method wordcount
bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.3.jar wordcount /data/input/data.txt /data/out/data
Behind the emergence of these shows a success
View Results
bin/hdfs dfs -cat /data/out/data/part-r-00000
success