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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3269) NameNode doesn't startup when restarted after running an MR job
Date Thu, 17 Apr 2008 18:27:21 GMT
NameNode doesn't startup when restarted after running an MR job
---------------------------------------------------------------

                 Key: HADOOP-3269
                 URL: https://issues.apache.org/jira/browse/HADOOP-3269
             Project: Hadoop Core
          Issue Type: Bug
    Affects Versions: 0.17.0
            Reporter: Devaraj Das
            Assignee: Robert Chansler
             Fix For: 0.17.0


If the following is done in sequence the namenode doesn't start up (tried all these on a single
node cluster setup)

1) Build a fresh hadoop jar from trunk

2) bin/start-all.sh

3) bin/hadoop dfs -put <somedir> input

4) bin/hadoop jar build/hadoop-0.18.0-dev-examples.jar wordcount input output

5) bin/stop-all.sh

6) bin/start-all.sh

Namenode doesnt start up. It fails with following exception:
2008-04-17 16:05:32,852 ERROR org.apache.hadoop.dfs.NameNode: 
org.apache.hadoop.fs.permission.AccessControlException: ugi = null
    at org.apache.hadoop.dfs.PermissionChecker.<init>(PermissionChecker.java:49)
    at org.apache.hadoop.dfs.FSNamesystem.checkPermission(FSNamesystem.java:4188)
    at org.apache.hadoop.dfs.FSNamesystem.checkTraverse(FSNamesystem.java:4167)
    at org.apache.hadoop.dfs.FSNamesystem.getFileInfo(FSNamesystem.java:1554)
    at org.apache.hadoop.dfs.FSNamesystem.changeLease(FSNamesystem.java:4358)
    at org.apache.hadoop.dfs.FSEditLog.loadFSEdits(FSEditLog.java:590)
    at org.apache.hadoop.dfs.FSImage.loadFSEdits(FSImage.java:843)
    at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:717)
    at org.apache.hadoop.dfs.FSImage.recoverTransitionRead(FSImage.java:281)
    at org.apache.hadoop.dfs.FSDirectory.loadFSImage(FSDirectory.java:81)
    at org.apache.hadoop.dfs.FSNamesystem.initialize(FSNamesystem.java:274)
    at org.apache.hadoop.dfs.FSNamesystem.<init>(FSNamesystem.java:255)
    at org.apache.hadoop.dfs.NameNode.initialize(NameNode.java:133)
    at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:178)
    at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:164)
    at org.apache.hadoop.dfs.NameNode.createNameNode(NameNode.java:782)
    at org.apache.hadoop.dfs.NameNode.main(NameNode.java:791)


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