hadoop-3.0.0-alpha4启动

全部启动或者全部停止(注意：第一次启动需要先格式，以后就不需要格式了，不能多次格式化)

1.启动

[root@master sbin]# pwd

/usr/hadoop/hadoop-3.0.0-alpha4/sbin

[root@master sbin]# ./start-all.sh 

Starting namenodes on [master]

Starting datanodes

Starting secondary namenodes [master]

Starting resourcemanager

Starting nodemanagers

[root@master sbin]# jps

3553 SecondaryNameNode

4099 Jps

3786 ResourceManager

3307 NameNode

2.停止

[root@master sbin]# ./stop-all.sh 

Stopping namenodes on [master]

Stopping datanodes

Stopping secondary namenodes [master]

Stopping nodemanagers

Stopping resourcemanager