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From Ravi Shetye <ravishe...@gmail.com>
Subject unable to restart namenode on hadoop 1.0.4
Date Mon, 30 Sep 2013 07:33:55 GMT
Can some one please help me about how I go ahead debugging the issue.The NN
log has the following error stack

2013-09-30 07:28:42,768 INFO
org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system
started
2013-09-30 07:28:42,967 INFO
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi
registered.
2013-09-30 07:28:42,972 WARN
org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Source name ugi already
exists!
2013-09-30 07:28:42,978 INFO
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source jvm
registered.
2013-09-30 07:28:42,980 INFO
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source
NameNode registered.
2013-09-30 07:28:43,012 INFO org.apache.hadoop.hdfs.util.GSet: VM type
  = 64-bit
2013-09-30 07:28:43,012 INFO org.apache.hadoop.hdfs.util.GSet: 2% max
memory = 27.3075 MB
2013-09-30 07:28:43,012 INFO org.apache.hadoop.hdfs.util.GSet: capacity
 = 2^22 = 4194304 entries
2013-09-30 07:28:43,012 INFO org.apache.hadoop.hdfs.util.GSet:
recommended=4194304, actual=4194304
2013-09-30 07:28:43,084 INFO
org.apache.hadoop.hdfs.server.namenode.FSNamesystem: fsOwner=ubuntu
2013-09-30 07:28:43,084 INFO
org.apache.hadoop.hdfs.server.namenode.FSNamesystem: supergroup=supergroup
2013-09-30 07:28:43,084 INFO
org.apache.hadoop.hdfs.server.namenode.FSNamesystem:
isPermissionEnabled=true
2013-09-30 07:28:43,119 INFO
org.apache.hadoop.hdfs.server.namenode.FSNamesystem:
dfs.block.invalidate.limit=100
2013-09-30 07:28:43,119 INFO
org.apache.hadoop.hdfs.server.namenode.FSNamesystem:
isAccessTokenEnabled=false accessKeyUpdateInterval=0 min(s),
accessTokenLifetime=0 min(s)
2013-09-30 07:28:43,183 INFO
org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Registered
FSNamesystemStateMBean and NameNodeMXBean
2013-09-30 07:28:43,207 INFO
org.apache.hadoop.hdfs.server.namenode.NameNode: Caching file names
occuring more than 10 times
2013-09-30 07:28:43,221 INFO org.apache.hadoop.hdfs.server.common.Storage:
Number of files = 528665
2013-09-30 07:28:49,109 INFO org.apache.hadoop.hdfs.server.common.Storage:
Number of files under construction = 7
2013-09-30 07:28:49,111 INFO org.apache.hadoop.hdfs.server.common.Storage:
Image file of size 79872266 loaded in 5 seconds.
2013-09-30 07:28:49,113 ERROR
org.apache.hadoop.hdfs.server.namenode.NameNode:
java.lang.NullPointerException
        at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1099)
        at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1111)
        at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.addNode(FSDirectory.java:1014)
        at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedAddFile(FSDirectory.java:208)
        at
org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:631)
        at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:1021)
        at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:839)
        at
org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:377)
        at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:100)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:388)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:362)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:276)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:496)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1279)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1288)

2013-09-30 07:28:49,114 INFO
org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:


-- 
RAVI SHETYE

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