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https://issues.apache.org/jira/browse/HDFS-5982?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jing Zhao reassigned HDFS-5982:
-------------------------------
Assignee: Jing Zhao
> Restarting Namenode can have NPE.
> ---------------------------------
>
> Key: HDFS-5982
> URL: https://issues.apache.org/jira/browse/HDFS-5982
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.3.0
> Reporter: Tassapol Athiapinya
> Assignee: Jing Zhao
> Priority: Critical
> Fix For: 2.3.0
>
>
> I stopped, started Namenode with no operations and hit into an issue when NN
> cannot start up again. There is NPE in NN logs.
>
> {code}
> 2014-02-19 01:59:04,616 FATAL
> org.apache.hadoop.hdfs.server.namenode.NameNode: Exception in namenode join
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotFSImageFormat.loadFileDiff(SnapshotFSImageFormat.java:131)
> at
> org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotFSImageFormat.loadFileDiffList(SnapshotFSImageFormat.java:111)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.loadINode(FSImageFormat.java:688)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.loadINodeWithLocalName(FSImageFormat.java:636)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.loadChildren(FSImageFormat.java:468)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.loadDirectoryWithSnapshot(FSImageFormat.java:510)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.loadDirectoryWithSnapshot(FSImageFormat.java:519)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.loadDirectoryWithSnapshot(FSImageFormat.java:519)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.loadDirectoryWithSnapshot(FSImageFormat.java:519)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.loadDirectoryWithSnapshot(FSImageFormat.java:519)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.loadLocalNameINodesWithSnapshot(FSImageFormat.java:412)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.load(FSImageFormat.java:350)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:832)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:821)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImageFile(FSImage.java:669)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:638)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:265)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:856)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:616)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:434)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:646)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:631)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1270)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1336)
> 2014-02-19 01:59:04,619 INFO org.apache.hadoop.util.ExitUtil: Exiting with
> status 1
> {code}
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