<span style="font-family:Helvetica Neue;">先连接以及搭好hadoop环境的系统(ubuntu)</span>
<span style="font-family: "Helvetica Neue";">yuukoiryPro:~ yuukoiry$ ssh hadoop@(ip)</span>
hadoop@master:~$ cd /etc
hadoop@master:/etc$ sudo vi hosts
hadoop@master:/etc$ sudo cat hosts
清除之前的记录、格式化并重新启动
hadoop@master:/etc$ cd /mysoftware/hadoop-2.6.0/
hadoop@master:/mysoftware/hadoop-2.6.0$ rm -rf tmp
hadoop@master:/mysoftware/hadoop-2.6.0$ rm -rf logs
hadoop@master:/mysoftware/hadoop-2.6.0$ rm -rf dfs
hadoop@master:/mysoftware/hadoop-2.6.0$ bin/hdfs namenode -format
hadoop@master:/mysoftware/hadoop-2.6.0$ sbin/start-dfs.sh
hadoop@master:/mysoftware/hadoop-2.6.0$ sbin/start-yarn.sh
hadoop@master:/mysoftware/hadoop-2.6.0$ jps
hadoop@master:/mysoftware/hadoop-2.6.0$ cd ~
hadoop@master:~$ mkdir text
hadoop@master:~$ cd text/
hadoop@master:~/text$ echo "Hello hadoop" >> text01.txt
hadoop@master:~/text$ echo "Hello hdfs hello mapreduce" >> text02.txt
hadoop@master:~/text$ ls
hadoop@master:~/text$ cat *
hadoop@master:~/text$ cd /mysoftware/hadoop-2.6.0/
hadoop@master:/mysoftware/hadoop-2.6.0$ bin/hdfs dfs -mkdir /input
hadoop@master:/mysoftware/hadoop-2.6.0$ bin/hdfs dfs -put ~/text/* /input
bin/yarn jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.6.0.jar wordcount /input /output