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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-309) NullPointerException in StatusHttpServer
Date Tue, 20 Jun 2006 00:38:29 GMT
NullPointerException in StatusHttpServer
----------------------------------------

         Key: HADOOP-309
         URL: http://issues.apache.org/jira/browse/HADOOP-309
     Project: Hadoop
        Type: Bug

  Components: dfs, mapred  
    Versions: 0.3.2    
    Reporter: Konstantin Shvachko


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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