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Date: Fri, 06 Nov 2009 12:02:51 +0000
From: Steve Loughran <stevel@apache.org>
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To: common-user@hadoop.apache.org
Subject: Re: NPE while starting NameNode
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Sumit Shangari wrote:
> I am trying to set up Hadoop on Linux Box.
> 
> Upon running start-all.sh following null pointer exception is being thrown
> in NameNode and dataNode logs.
> 
> 2008-09-30 18:14:07,565 ERROR
> org.apache.hadoop.hdfs.server.datanode.DataNode:
> java.lang.NullPointerException


>  I Have already set fs.default.name IN CORE-SITE.XML
>         <property>
>                 <name>fs.dafault.name</name>
>                 <value>hdfs://localhost:9000</value>
>         </property>
> After spending some time on google regarding this issue,it looks like  I am
> missing some configuration .

It would be good if hadoop failed more gracefully -in the meantime spell 
default correctly in the property and it may work better