這個問題在網上找了很多，就大致總結了一下：

是這樣的：如果如下圖，browseDirectory.jsp頁面不存在 ，那麼可能是datanode沒有啟動成功

然後我們檢查

如果 live nodes 為0 ，然後上邊也是0blocks 那麼基本我們可以試著重啟一下 datanode

bin/Hadoop-daemon.sh start DataNode 

[[email protected] bin]$ jps   
8654 NameNode
8889 Jps
8808 JobTracker
[[email protected] bin]$ ./hadoop-daemon.sh start datanode
starting datanode, logging to /usr/myhadoop/hadoop/bin/../logs/hadoop-hadoop-datanode-mylinux.out
[
 
[email protected] bin]$ jps
9027 Jps
8654 NameNode
8941 DataNode
8808 JobTracker
[[email protected] bin]$ 

網上還有一種說法 ，在此僅貼出地址：

http://yymmiinngg.iteye.com/blog/706909

http://blog.sina.com.cn/s/blog_6d932f2a0101fswv.html

對與這個問題，我查了官網http://comments.gmane.org/gmane.comp.jakarta.lucene.hadoop.user/6649

I was exactly following the Hadoop 0.16.4 quickstart guide to run a Pseudo-distributed operation on my
Fedora 8 machine. The first time I did it, everything ran successfully (formated a new hdfs, started
hadoop daemons, then ran the grep example). A moment later, I decided to redo everything again.
Reformating the hdfs and starting the daemons seemed to have no problem; but from the homepage of the
namenode's web interface (
 
http://localhost:50070/), when I clicked "Browse the filesystem", it said
the following:

HTTP ERROR: 404
/browseDirectory.jsp
RequestURI=/browseDirectory.jsp
Then when I tried to copy files to the hdfs to re-run the grep example, I couldn't with the following long list
of exceptions (looks like some replication or block allocation issue):

# bin/hadoop dfs -put conf input

08/06/29 09:38:42 INFO dfs.DFSClient: org.apache.hadoop.ipc.RemoteException:
java.io.IOException: File /user/root/input/hadoop-env.sh could only be replicated to 0 nodes,
instead of 1
        at org.apache.hadoop.dfs.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1127)
        at org.apache.hadoop.dfs.NameNode.addBlock(NameNode.java:312)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:409)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:901)

        at org.apache.hadoop.ipc.Client.call(Client.java:512)
        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:198)
        at org.apache.hadoop.dfs.$Proxy0.addBlock(Unknown Source)

Re: Failed to repeat the Quickstart guide for Pseudo-distributed operation

> # bin/hadoop dfs -put conf input
>
> 08/06/29 09:38:42 INFO dfs.DFSClient:  
> org.apache.hadoop.ipc.RemoteException: java.io.IOException: File / 
> user/root/input/hadoop-env.sh could only be replicated to 0 nodes,  
> instead of 1

Looks like your datanode didn't come up, anything in the logs?http://wiki.apache.org/hadoop/Help

Arun