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From Abhay Ratnaparkhi <abhay.ratnapar...@gmail.com>
Subject Re: namenode not starting
Date Fri, 24 Aug 2012 07:40:21 GMT
Hello,

I was using cluster for long time and not formatted the namenode.
I ran bin/stop-all.sh and bin/start-all.sh scripts only.

I am using NFS for dfs.name.dir.
hadoop.tmp.dir is a /tmp directory. I've not restarted the OS.  Any way to
recover the data?

Thanks,
Abhay

On Fri, Aug 24, 2012 at 1:01 PM, Bejoy KS <bejoy.hadoop@gmail.com> wrote:

> **
> Hi Abhay
>
> What is the value for hadoop.tmp.dir or dfs.name.dir . If it was set to
> /tmp the contents would be deleted on a OS restart. You need to change this
> location before you start your NN.
> Regards
> Bejoy KS
>
> Sent from handheld, please excuse typos.
> ------------------------------
> *From: * Abhay Ratnaparkhi <abhay.ratnaparkhi@gmail.com>
> *Date: *Fri, 24 Aug 2012 12:58:41 +0530
> *To: *<user@hadoop.apache.org>
> *ReplyTo: * user@hadoop.apache.org
> *Subject: *namenode not starting
>
> Hello,
>
> I had a running hadoop cluster.
> I restarted it and after that namenode is unable to start. I am getting
> error saying that it's not formatted. :(
> Is it possible to recover the data on HDFS?
>
> 2012-08-24 03:17:55,378 ERROR
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem
> initialization failed.
> java.io.IOException: NameNode is not formatted.
>         at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:434)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:110)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:291)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:270)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:271)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:303)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:433)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:421)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1359)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1368)
> 2012-08-24 03:17:55,380 ERROR
> org.apache.hadoop.hdfs.server.namenode.NameNode: java.io.IOException:
> NameNode is not formatted.
>         at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:434)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:110)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:291)
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:270)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:271)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:303)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:433)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:421)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1359)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1368)
>
> Regards,
> Abhay
>
>
>

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