ERROR dfs.NameNode:

2008-10-05 Thread Ashok Varma 
I have setup a multi node cluster as one machine("master" in this case)
which acts as master as well as slave and other machine("slave") as slave
I'm getting following error while executing the command:
[EMAIL PROTECTED] bin/hadoop namenode

[EMAIL PROTECTED] hadoop-0.18.0]$ bin/hadoop namenode
08/10/05 17:36:45 INFO dfs.NameNode: STARTUP_MSG:
/
STARTUP_MSG: Starting NameNode
STARTUP_MSG:   host = master/192.168.4.104
STARTUP_MSG:   args = []
STARTUP_MSG:   version = 0.18.0
STARTUP_MSG:   build =
http://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.18 -r 686010;
compiled by 'hadoopqa' on Thu Aug 14 19:48:33 UTC 2008
/
*08/10/05 17:36:45 ERROR dfs.NameNode: java.lang.NullPointerException*
at
org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:130)
at org.apache.hadoop.dfs.NameNode.getAddress(NameNode.java:116)
at org.apache.hadoop.dfs.NameNode.initialize(NameNode.java:136)
at org.apache.hadoop.dfs.NameNode.(NameNode.java:193)
at org.apache.hadoop.dfs.NameNode.(NameNode.java:179)
at org.apache.hadoop.dfs.NameNode.createNameNode(NameNode.java:830)
at org.apache.hadoop.dfs.NameNode.main(NameNode.java:839)

08/10/05 17:36:45 INFO dfs.NameNode: SHUTDOWN_MSG:
/
SHUTDOWN_MSG: Shutting down NameNode at master/192.168.4.104
/
*
*

UnknownHost Exception

2008-10-04 Thread Ashok Varma 
I have configured my machine as  Pseudo-Distributed :

I'm getting this error : *STARTUP_MSG:   host =
java.net.UnknownHostException: hadoop: hadoop

but i have given the host name as *"Hadoop-host" *in /etc/hosts *
Here is the log file output
===
2008-10-04 18:02:46,717 INFO org.apache.hadoop.dfs.NameNode.Secondary:
STARTUP_MSG:
/
STARTUP_MSG: Starting SecondaryNameNode
STARTUP_MSG:   host = java.net.UnknownHostException: hadoop: hadoop
STARTUP_MSG:   args = []
STARTUP_MSG:   version = 0.18.0
STARTUP_MSG:   build =
http://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.18 -r 686010;
compiled by 'hadoopqa' on Thu Aug 14 19:48:33 UTC 2008
/
2008-10-04 18:02:46,815 INFO org.apache.hadoop.metrics.jvm.JvmMetrics:
Initializing JVM Metrics with processName=SecondaryNameNode, sessionId=null
2008-10-04 18:02:46,829 INFO org.apache.hadoop.util.MetricsUtil: Unable to
obtain hostName
java.net.UnknownHostException: hadoop: hadoop
at java.net.InetAddress.getLocalHost(InetAddress.java:1353)
at
org.apache.hadoop.metrics.MetricsUtil.getHostName(MetricsUtil.java:86)
at
org.apache.hadoop.metrics.MetricsUtil.createRecord(MetricsUtil.java:75)
at org.apache.hadoop.metrics.jvm.JvmMetrics.(JvmMetrics.java:77)
at org.apache.hadoop.metrics.jvm.JvmMetrics.init(JvmMetrics.java:69)
at
org.apache.hadoop.dfs.SecondaryNameNode.initialize(SecondaryNameNode.java:120)
at
org.apache.hadoop.dfs.SecondaryNameNode.(SecondaryNameNode.java:108)
at
org.apache.hadoop.dfs.SecondaryNameNode.main(SecondaryNameNode.java:460)
2008-10-04 18:02:47,005 WARN org.apache.hadoop.dfs.Storage: Checkpoint
directory /tmp/hadoop-hadoop/dfs/namesecondary is added.
2008-10-04 18:02:47,092 INFO org.mortbay.util.Credential: Checking Resource
aliases
2008-10-04 18:02:47,146 INFO org.mortbay.http.HttpServer: Version
Jetty/5.1.4
2008-10-04 18:02:47,148 INFO org.mortbay.util.Container: Started
HttpContext[/static,/static]
2008-10-04 18:02:47,148 INFO org.mortbay.util.Container: Started
HttpContext[/logs,/logs]
2008-10-04 18:02:47,616 INFO org.mortbay.jetty.servlet.XMLConfiguration: No
WEB-INF/web.xml in file:/home/hadoop/Hadoop/hadoop-0.18.0/webapps/secondary.
Serving files and default/dynamic servlets only
2008-10-04 18:02:47,618 INFO org.mortbay.util.Container: Started
[EMAIL PROTECTED]
2008-10-04 18:02:47,669 INFO org.mortbay.util.Container: Started
WebApplicationContext[/,/]
2008-10-04 18:02:47,672 INFO org.mortbay.http.SocketListener: Started
SocketListener on 0.0.0.0:50090
2008-10-04 18:02:47,672 INFO org.mortbay.util.Container: Started
[EMAIL PROTECTED]
2008-10-04 18:02:47,672 INFO org.apache.hadoop.dfs.NameNode.Secondary:
Secondary Web-server up at: 0.0.0.0:50090
2008-10-04 18:02:47,672 WARN org.apache.hadoop.dfs.NameNode.Secondary:
Checkpoint Period   :3600 secs (60 min)
2008-10-04 18:02:47,672 WARN org.apache.hadoop.dfs.NameNode.Secondary: Log
Size Trigger:67108864 bytes (65536 KB)
2008-10-04 18:05:33,896 INFO org.apache.hadoop.dfs.NameNode.Secondary:
SHUTDOWN_MSG:
/
SHUTDOWN_MSG: Shutting down SecondaryNameNode at
java.net.UnknownHostException: hadoop: hadoop
/

XEN guest OS

2008-07-01 Thread Ashok Varma 
Hi ,

I'm trying to install Fedora8 as a Guest OS in XEN on CentOS5.2 -64 bit.
Always getting " failed to Mount directory" error. I configured NFS share,
then also
installation getting failed in middle..



Any IDEA !!!