NameNode in hadoop not running and no access to (http://localhost:50030)

Question

I'm using Hadoop 1.2.1 standalone mode .. when i use jps command the output is :

2528 TaskTracker
3044 Jps
2380 JobTracker
2140 DataNode
2286 SecondaryNameNode

There is no NameNode running i don't know why ?..

And when i try to open the http://localhost:50030 ... its won't open

http://localhost:50070 open .. but can't open :
Browse the filesystem
Namenode Logs

when i try to be root by using sudo su it give me this :

hduser is not in the sudoers file. This incident will be reported.

How can i fix this ?

Answer 1

我发现在笔记本计算机关闭后hadoop进程仍在运行时会发生此问题..我必须重新安装hadoop，它才能正常工作。