[HADOOP-309] NullPointerException in StatusHttpServer

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.10.1
• Fix Version/s: 0.11.0
• Assignee: navychen
• Reporter: Konstantin Shvachko
• Created: 20/Jun/06 07:37
• Updated: 08/Jul/09 16:51
• Resolved: 02/Feb/07 21:06

Description

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.