RE: Does Hadoop work with Network File Systems?

Hi,
  when I tried "bin/hadoop jar
hadoop-0.14.2-examples.jar grep input
 output 'dfs[a-z.]+'", I received:
  "put: java.io.IOException: Failed to create file
 /user/dx1908/input/hadoop-default.xml on client 127.0.0.1
because this cluster has no
 datanodes."
Anyway, I tried to send my logs directory but the mail
server rejected. Therefore, I only copy hadoop-datanote.log
here:
  2007-10-23 20:37:11,356 INFO
org.apache.hadoop.dfs.DataNode: STARTUP_MSG: 
/***********************************************************
*
STARTUP_MSG: Starting DataNode
STARTUP_MSG:   host = lab314pc1/127.0.0.1
STARTUP_MSG:   args = []
************************************************************
/
2007-10-23 20:37:11,609 INFO
org.apache.hadoop.metrics.jvm.JvmMetrics: Initializing JVM
Metrics with processName=DataNode, sessionId=null
2007-10-23 20:37:11,955 ERROR
org.apache.hadoop.dfs.DataNode:
org.apache.hadoop.ipc.RemoteException: java.io.IOException:
java.lang.ClassFormatError: Illegal class modifiers in class
org/apache/hadoop/package-info: 0x1600
 at java.lang.ClassLoader.defineClass1(Native Method)
 at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
 at
java.security.SecureClassLoader.defineClass(SecureClassLoade
r.java:124)
 at
java.net.URLClassLoader.defineClass(URLClassLoader.java:260)

 at
java.net.URLClassLoader.access$100(URLClassLoader.java:56)
 at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
 at java.security.AccessController.doPrivileged(Native
Method)
 at
java.net.URLClassLoader.findClass(URLClassLoader.java:188)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
 at
sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268
)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
 at
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319
)
 at java.lang.Class.forName0(Native Method)
 at java.lang.Class.forName(Class.java:242)
 at java.lang.Package.getPackageInfo(Package.java:350)
 at java.lang.Package.getAnnotation(Package.java:361)
 at
org.apache.hadoop.util.VersionInfo.<clinit>(VersionInf
o.java:33)
 at
org.apache.hadoop.dfs.Storage.getBuildVersion(Storage.java:5
25)
 at
org.apache.hadoop.dfs.NamespaceInfo.<init>(NamespaceIn
fo.java:46)
 at
org.apache.hadoop.dfs.FSNamesystem.getNamespaceInfo(FSNamesy
stem.java:323)
 at
org.apache.hadoop.dfs.NameNode.versionRequest(NameNode.java:
684)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce
ssorImpl.java:39)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe
thodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:340)
 at
org.apache.hadoop.ipc.Server$Handler.run(Server.java:566)
   at org.apache.hadoop.ipc.Client.call(Client.java:470)
 at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:165)
 at org.apache.hadoop.dfs.$Proxy0.versionRequest(Unknown
Source)
 at
org.apache.hadoop.dfs.DataNode.handshake(DataNode.java:294)
 at
org.apache.hadoop.dfs.DataNode.startDataNode(DataNode.java:2
38)
 at
org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:20
6)
 at
org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java:13
91)
 at org.apache.hadoop.dfs.DataNode.run(DataNode.java:1335)
 at
org.apache.hadoop.dfs.DataNode.createDataNode(DataNode.java:
1356)
 at org.apache.hadoop.dfs.DataNode.main(DataNode.java:1525)
  2007-10-23 20:37:11,959 INFO
org.apache.hadoop.dfs.DataNode: SHUTDOWN_MSG: 
/***********************************************************
*
SHUTDOWN_MSG: Shutting down DataNode at lab314pc1/127.0.0.1
************************************************************
/
T
 

edward yoon <webmasterudanax.org> wrote:
  
If you show me your log, i can pinpoint your problem pretty
quickly.

----
B. Regards,
Edward yoon (Assistant Manager/R&D Center/NHN, corp.)
+82-31-600-6183, +82-10-7149-7856
http://www.udanax.org


> Date: Tue, 23 Oct 2007 13:19:21 -0700
> From: betaisaoyahoo.com
> Subject: Does Hadoop work with Network File Systems?
> To: hadoop-devlucene.apache.org
>
> Hi,
> I am new to Hadoop. I downloaded and unzipped Hadoop to
NFS (not in administrator's role). When I tried to run it
using distributed configuration, it showed: "... no
datanotes" although I put some host in the slaves
file.
> Thanks
> T
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection
around
> http://mail.yahoo.com

____________________________________________________________
_____
Boo! Scare away worms, viruses and so much more! Try Windows
Live OneCare!
http://onecare.live.com/standard/
en-us/purchase/trial.aspx?s_cid=wl_hotmailnews

 __________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection
around 
http://mail.yahoo.com