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Posted to common-user@hadoop.apache.org by Runping Qi <ru...@gmail.com> on 2010/05/11 18:53:13 UTC

Namenode warnings

Hi,

I saw a lot of  warnings like the following in namenode log:

2010-05-11 06:45:07,186 WARN /: /listPaths/xxxxxxxxxxxxs:
java.lang.NullPointerException
	at org.apache.hadoop.hdfs.server.namenode.ListPathsServlet.doGet(ListPathsServlet.java:153)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:596)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427)
	at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
	at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
	at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:635)
	at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
	at org.mortbay.http.HttpServer.service(HttpServer.java:954)
	at org.mortbay.http.HttpConnection.service(HttpConnection.java:814)
	at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981)
	at org.mortbay.http.HttpConnection.handle(HttpConnection.java:831)
	at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
	at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)

I am using Hadoop 0.19.

Anybody knows what might be the problem?

Thanks,

Runping

	at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)

Re: Namenode warnings

Posted by Runping Qi <ru...@gmail.com>.
So it's a known problem of Hadoop 0.19?


On Tue, May 11, 2010 at 11:06 AM, Allen Wittenauer <awittenauer@linkedin.com
> wrote:

>
> On May 11, 2010, at 9:53 AM, Runping Qi wrote:
>
> > I am using Hadoop 0.19.
> >
> > Anybody knows what might be the problem?
>
> I think you answered your own question. :)
>
>

Re: Namenode warnings

Posted by Allen Wittenauer <aw...@linkedin.com>.
On May 11, 2010, at 9:53 AM, Runping Qi wrote:

> I am using Hadoop 0.19.
> 
> Anybody knows what might be the problem?

I think you answered your own question. :)

Re: Namenode warnings

Posted by "Tsz Wo (Nicholas), Sze" <s2...@yahoo.com>.
Hi Runping,
This is a known issue.  See https://issues.apache.org/jira/browse/HDFS-625.
Nicholas Sze




----- Original Message ----
> From: Runping Qi <ru...@gmail.com>
> To: common-user@hadoop.apache.org
> Sent: Wed, May 12, 2010 12:53:13 AM
> Subject: Namenode warnings
> 
> Hi,

I saw a lot of  warnings like the following in namenode 
> log:

2010-05-11 06:45:07,186 WARN /: 
> /listPaths/xxxxxxxxxxxxs:
java.lang.NullPointerException
    
> at 
> org.apache.hadoop.hdfs.server.namenode.ListPathsServlet.doGet(ListPathsServlet.java:153)
    
> at 
> javax.servlet.http.HttpServlet.service(HttpServlet.java:596)
    
> at 
> javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
    
> at 
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427)
    
> at 
> org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475)
    
> at 
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
    
> at 
> org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
    
> at 
> org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:635)
    
> at 
> org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
    
> at 
> org.mortbay.http.HttpServer.service(HttpServer.java:954)
    
> at 
> org.mortbay.http.HttpConnection.service(HttpConnection.java:814)
    
> at 
> org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981)
    
> at 
> org.mortbay.http.HttpConnection.handle(HttpConnection.java:831)
    
> at 
> org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
    
> at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)

I am 
> using Hadoop 0.19.

Anybody knows what might be the 
> problem?

Thanks,

Runping

    at 
> org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)