Hadoop状态页面的Browse the filesystem链接无效的问题

这个问题在网上找了很多，就大致总结了一下：

是这样的：如果如下图，browseDirectory.jsp页面不存在 ，那么可能是datanode没有启动成功

然后我们检查

如果 live nodes 为0 ，然后上边也是0blocks 那么基本我们可以试着重启一下 datanode

bin/Hadoop-daemon.sh start DataNode 

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

网上还有一种说法 ，在此仅贴出地址：

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

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

对与这个问题，我查了官网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)

Arun C Murthy |  9 Jul 2008 07:13

 
 

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

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