hadoop 单节点和伪分布式安装配置

$ bin/hdfs dfs -mkdir /user/<username>
这句话的<username>为你自己的机器名（用户名）

还有一个waring :

Java HotSpot(TM) Server VM warning: You have loaded library /home/xuejiewu/hadoop/hadoop-2.6.0/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
15/03/09 16:47:01 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

查资料说是兼容性的问题（６４位　but ３２位系统），但是目前没有动也可以用。。