Hi Runping,
This is a known issue. See https://issues.apache.org/jira/browse/HDFS-625.
Nicholas Sze
----- Original Message ----
> From: Runping Qi <runping...@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)
