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https://issues.apache.org/jira/browse/HADOOP-3118?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dhruba borthakur updated HADOOP-3118:
-------------------------------------
Fix Version/s: 0.17.0
The new disk format stores open lease for files that were being written to.
When a old disk format is upgraded to the new format, the values inside the
lease were not initialised. For example, the name of the client that holds the
lease was erroneously set to null.
> Namenode NPE while loading fsimage after a cluster upgrade from older disk
> format
> ---------------------------------------------------------------------------------
>
> Key: HADOOP-3118
> URL: https://issues.apache.org/jira/browse/HADOOP-3118
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Fix For: 0.17.0
>
> Attachments: loadImageNPE.patch
>
>
> FSDirectory.unprotectedDelete: failed to remove /user/ran gadi/10Mb because
> it does not exist
> 2008-03-27 22:00:10,904 ERROR org.apache.hadoop.dfs.NameNode:
> java.lang.NullPointerException
> at
> org.apache.hadoop.dfs.StringBytesWritable.<init>(StringBytesWritable.java:39)
> at
> org.apache.hadoop.dfs.INodeFileUnderConstruction.<init>(INode.java:795)
> at org.apache.hadoop.dfs.FSEditLog.loadFSEdits(FSEditLog.java:528)
> at org.apache.hadoop.dfs.FSImage.loadFSEdits(FSImage.java:766)
> at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:640)
> at org.apache.hadoop.dfs.FSImage.doUpgrade(FSImage.java:250)
> at
> org.apache.hadoop.dfs.FSImage.recoverTransitionRead(FSImage.java:217)
> at
> org.apache.hadoop.dfs.FSDirectory.loadFSImage(FSDirectory.java:80)
> 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:846)
> at org.apache.hadoop.dfs.NameNode.main(NameNode.java:855)
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