[jira] Resolved: (HADOOP-3724) Namenode does not start due to exception throw while saving Image

["dhruba borthakur (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-3724?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

dhruba borthakur resolved HADOOP-3724.
--------------------------------------

    Resolution: Invalid

This problem existed in pre-0.18 release. It has been fixed in 0.18 release.

> Namenode does not start due to exception throw while saving Image
> -----------------------------------------------------------------
>
>                 Key: HADOOP-3724
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3724
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.18.0
>            Reporter: Lohit Vijayarenu
>            Assignee: dhruba borthakur
>            Priority: Blocker
>             Fix For: 0.18.0
>
>
> Re-start of namenode failed with this stack trace while savingImage during initialization
> {noformat}
> 2008-07-09 00:20:21,470 INFO org.apache.hadoop.ipc.Server: Stopping server on 9000
> 2008-07-09 00:20:21,493 ERROR org.apache.hadoop.dfs.NameNode: java.io.IOException: saveLeases found path /foo/bar/jambajuice but no matching entry in namespace.  
> at org.apache.hadoop.dfs.FSNamesystem.saveFilesUnderConstruction(FSNamesystem.java:4376)  
> at org.apache.hadoop.dfs.FSImage.saveFSImage(FSImage.java:874)  
> at org.apache.hadoop.dfs.FSImage.saveFSImage(FSImage.java:892)  
> at org.apache.hadoop.dfs.FSDirectory.loadFSImage(FSDirectory.java:81)   
> at org.apache.hadoop.dfs.FSNamesystem.initialize(FSNamesystem.java:273)   
> at org.apache.hadoop.dfs.FSNamesystem.<init>(FSNamesystem.java:252)   
> at org.apache.hadoop.dfs.NameNode.initialize(NameNode.java:148)   
> at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:193)   
> at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:179)   
> at org.apache.hadoop.dfs.NameNode.createNameNode(NameNode.java:822)  
> at org.apache.hadoop.dfs.NameNode.main(NameNode.java:831)
> {noformat}
> Looks like it was throwing IOException in saveFilesUnderConstruction
> Before restart NameNode was killed while some jobs were running. Upon looking at the namenode log before the stopping of namenode, there were many entries like this 
> {noformat}
> 2008-07-09 00:12:55,301 INFO org.apache.hadoop.fs.FSNamesystem: Recovering lease=[Lease.  Holder: DFSClient_-510679348, pendingcreates: 1], src=/foo/bar/jambajuice
> 2008-07-09 00:12:55,301 WARN org.apache.hadoop.dfs.StateChange: DIR* NameSystem.internalReleaseCreate: attempt to release a create lock on /foo/bar/jambajuice  file does not exist.
> {noformat}
> These 2 lines are repeated forever every second, to a point where I see that a 7 node cluster had namenode log with size close to 41G.
> Could not find any other information about the file as there were not previous namenode logs. 

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