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https://issues.apache.org/jira/browse/HDFS-1594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13006368#comment-13006368
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Devaraj K commented on HDFS-1594:
---------------------------------

During write operation, if the name node encounters disk full condition for 
updating the fsimage it is abruptly writing till disk space available and 
immediately name node is shutting down.

When we restart name node, it is trying to read the fsimage for initialization 
of the name system and it is giving the EOFException as shown in the 
description because the fsimage is not having the expected data. Please find 
the exception stack trace in the description for the exact failure point.


> When the disk becomes full Namenode is getting shutdown and not able to 
> recover
> -------------------------------------------------------------------------------
>
>                 Key: HDFS-1594
>                 URL: https://issues.apache.org/jira/browse/HDFS-1594
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.21.0, 0.21.1, 0.22.0
>         Environment: Linux linux124 2.6.27.19-5-default #1 SMP 2009-02-28 
> 04:40:21 +0100 x86_64 x86_64 x86_64 GNU/Linux
>            Reporter: Devaraj K
>             Fix For: 0.23.0
>
>         Attachments: HDFS-1594.patch, HDFS-1594.patch, HDFS-1594.patch, 
> hadoop-root-namenode-linux124.log
>
>
> When the disk becomes full name node is shutting down and if we try to start 
> after making the space available It is not starting and throwing the below 
> exception.
> {code:xml} 
> 2011-01-24 23:23:33,727 ERROR 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem 
> initialization failed.
> java.io.EOFException
>       at java.io.DataInputStream.readFully(DataInputStream.java:180)
>       at org.apache.hadoop.io.UTF8.readFields(UTF8.java:117)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSImageSerialization.readString(FSImageSerialization.java:201)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:185)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:93)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:60)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:1089)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:1041)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:487)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:149)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:306)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:284)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:328)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:356)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:577)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:570)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1529)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1538)
> 2011-01-24 23:23:33,729 ERROR 
> org.apache.hadoop.hdfs.server.namenode.NameNode: java.io.EOFException
>       at java.io.DataInputStream.readFully(DataInputStream.java:180)
>       at org.apache.hadoop.io.UTF8.readFields(UTF8.java:117)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSImageSerialization.readString(FSImageSerialization.java:201)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:185)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:93)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:60)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:1089)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:1041)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:487)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:149)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:306)
>       at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:284)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:328)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:356)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:577)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:570)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1529)
>       at 
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1538)
> 2011-01-24 23:23:33,730 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: 
> SHUTDOWN_MSG: 
> /************************************************************
> SHUTDOWN_MSG: Shutting down NameNode at linux124/10.18.52.124
> ************************************************************/
> {code} 

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