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From Tung Nguyen <betai...@yahoo.com>
Subject RE: Does Hadoop work with Network File Systems?
Date Wed, 24 Oct 2007 02:18:14 GMT
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(SecureClassLoader.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>(VersionInfo.java:33)
 at org.apache.hadoop.dfs.Storage.getBuildVersion(Storage.java:525)
 at org.apache.hadoop.dfs.NamespaceInfo.<init>(NamespaceInfo.java:46)
 at org.apache.hadoop.dfs.FSNamesystem.getNamespaceInfo(FSNamesystem.java:323)
 at org.apache.hadoop.dfs.NameNode.versionRequest(NameNode.java:684)
 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: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:238)
 at org.apache.hadoop.dfs.DataNode.<init>(DataNode.java:206)
 at org.apache.hadoop.dfs.DataNode.makeInstance(DataNode.java:1391)
 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 <webmaster@udanax.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: betaisao@yahoo.com
> Subject: Does Hadoop work with Network File Systems?
> To: hadoop-dev@lucene.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
>
> __________________________________________________
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