Namenode shutting down again and again in single node setup

[Mapred Learn <ma...@gmail.com>]

Hi,
I have setup  single node setup and any commaand I run gives error:
$ /home/Owner/hadoop/hadoop-0.20.2/bin/hadoop jar hadoop-*-examples.jar grep
in
put output 'dfs[a-z.]+'
11/01/11 10:54:28 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0
.1:9000. Already tried 0 time(s).
11/01/11 10:54:30 INFO ipc.Client: Retrying connect to server:
localhost/127.0.0
.1:9000. Already tried 1 time(s).
Name node log shows following :

2011-01-11 10:50:21,579 INFO org.mortbay.log: jetty-6.1.14^M
2011-01-11 10:50:21,959 INFO org.mortbay.log: Started
SelectChannelConnector@0.0
.0.0:50070^M
2011-01-11 10:50:21,959 INFO
org.apache.hadoop.hdfs.server.namenode.NameNode: We
b-server up at: 0.0.0.0:50070^M
2011-01-11 10:50:21,959 INFO org.apache.hadoop.ipc.Server: IPC Server
listener o
n 9000: starting^M
2011-01-11 10:50:21,959 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 3
on 9000: starting^M
2011-01-11 10:50:21,969 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 9
on 9000: starting^M
2011-01-11 10:50:21,969 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 5
on 9000: starting^M
2011-01-11 10:50:21,969 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 1
on 9000: starting^M
2011-01-11 10:50:21,969 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 8
on 9000: starting^M
2011-01-11 10:50:21,969 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 0
on 9000: starting^M
2011-01-11 10:50:21,979 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 7
on 9000: starting^M
2011-01-11 10:50:21,969 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 6
on 9000: starting^M
2011-01-11 10:50:21,969 INFO org.apache.hadoop.ipc.Server: IPC Server
Responder:
 starting^M
2011-01-11 10:50:21,989 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 2
on 9000: starting^M
2011-01-11 10:50:21,989 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 4
on 9000: starting^M
2011-01-11 10:50:22,019 INFO org.apache.hadoop.hdfs.StateChange: BLOCK*
NameSyst
em.registerDatanode: node registration from 127.0.0.1:50010 storage
DS-101211513
6-192.168.1.82-50010-1294771623423^M
2011-01-11 10:50:22,029 INFO org.apache.hadoop.net.NetworkTopology: Adding a
new
 node: /default-rack/127.0.0.1:50010^M
2011-01-11 10:50:22,039 INFO org.apache.hadoop.hdfs.StateChange: STATE* Safe
mod
e extension entered.
The ratio of reported blocks 1.0000 has reached the threshold 0.9990. Safe
mode
will be turned off automatically in 30 seconds.^M
2011-01-11 10:50:34,490 INFO
org.apache.hadoop.hdfs.server.namenode.NameNode: SH
UTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at Owner-VAIO/192.168.1.82
************************************************************/^M


What is the issue here ?

Thanks,