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https://issues.apache.org/jira/browse/HADOOP-3118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12583112#action_12583112
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Raghu Angadi commented on HADOOP-3118:
--------------------------------------
Could briefly describe the fix, though the patch looks simple? Should this be
fixed for 0.17?
> 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
> 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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