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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-309) NullPointerException in StatusHttpServer
Date Fri, 02 Feb 2007 21:07:05 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doug Cutting updated HADOOP-309:
--------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

I just committed this.  Thanks, navychen!

> NullPointerException in StatusHttpServer
> ----------------------------------------
>
>                 Key: HADOOP-309
>                 URL: https://issues.apache.org/jira/browse/HADOOP-309
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.10.1
>            Reporter: Konstantin Shvachko
>         Assigned To: navychen
>            Priority: Minor
>             Fix For: 0.11.0
>
>         Attachments: 309.patch
>
>
> The NullPointerException happens in the constructor of StatusHttpServer because the System
property "hadoop.log.dir" is undefined.
> I see it trying to start the Namenode directly without using any scripts.
> Exception in thread "main" java.lang.NullPointerException
> 	at org.mortbay.util.Resource.newResource(Resource.java:99)
> 	at org.mortbay.http.ResourceCache.setResourceBase(ResourceCache.java:140)
> 	at org.mortbay.http.HttpContext.setResourceBase(HttpContext.java:2207)
> 	at org.apache.hadoop.mapred.StatusHttpServer.<init>(StatusHttpServer.java:66)
> 	at org.apache.hadoop.dfs.FSNamesystem.<init>(FSNamesystem.java:172)
> 	at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:97)
> 	at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:88)
> 	at org.apache.hadoop.dfs.NameNode.main(NameNode.java:496)
> In general I think the sources should not rely on the system properties and environment
variables defined in hadoop scripts.

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