Error for start hadoop namenode

Fri, 31 Dec 2010 20:05:37 -0800 

Hi,

When i start hadoop namenode, got ont error message below:

2011-01-01 11:58:20,763 ERROR
org.apache.hadoop.hdfs.server.namenode.NameNode:
java.lang.NullPointerException
        at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedSetTimes(FSDirectory.java:1320)
        at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedSetTimes(FSDirectory.java:1309)
        at
org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:776)
        at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:992)
        at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:812)
        at
org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:364)
        at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:87)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:311)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:292)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:201)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:279)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:956)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:965)

and the namenode not start, what happen for that no change any thing in
server.

Happy New Year & Regards,
Singo

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