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Posted to general@hadoop.apache.org by Vandana Ayyalasomayajula <va...@uci.edu> on 2010/05/03 06:57:14 UTC

Problem with configuring Fair Schduler

Hi All,

I am trying to configure fair scheduler in hadoop. I have followed all 
the instructions given in hadoop common docs ( 
http://hadoop.apache.org/common/docs/current/fair_scheduler.html#Configuring+the+Fair+scheduler 
). But when I try to click on the job queue in the job tracker page , I 
see the following exception:

java.lang.NullPointerException
	at org.apache.hadoop.mapred.FairScheduler.getJobs(FairScheduler.java:765)
	at org.apache.hadoop.mapred.jobqueue_005fdetails_jsp._jspService(jobqueue_005fdetails_jsp.java:64)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:363)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:324)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:533)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:522)

If anybody has come across this problem, please do let me know where I 
am going wrong.

Thanks for the help.
Vandana

Re: Problem with configuring Fair Schduler

Posted by Kumar Harshit <hk...@gmail.com>.
Hi

Can I have a look at your project report on Pig and Hive query execution?

I stumbled upon it but couldnt download it.

Thanks
Kumar

On Mon, May 3, 2010 at 1:57 PM, Vandana Ayyalasomayajula
<va...@uci.edu>wrote:

> Hi All,
>
> I am trying to configure fair scheduler in hadoop. I have followed all the
> instructions given in hadoop common docs (
> http://hadoop.apache.org/common/docs/current/fair_scheduler.html#Configuring+the+Fair+scheduler). But when I try to click on the job queue in the job tracker page , I see
> the following exception:
>
> java.lang.NullPointerException
>        at
> org.apache.hadoop.mapred.FairScheduler.getJobs(FairScheduler.java:765)
>        at
> org.apache.hadoop.mapred.jobqueue_005fdetails_jsp._jspService(jobqueue_005fdetails_jsp.java:64)
>        at
> org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>        at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
>        at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:363)
>        at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>        at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>        at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
>        at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
>        at
> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
>        at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>        at org.mortbay.jetty.Server.handle(Server.java:324)
>        at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
>        at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864)
>        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:533)
>        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207)
>        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403)
>        at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
>        at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:522)
>
> If anybody has come across this problem, please do let me know where I am
> going wrong.
>
> Thanks for the help.
> Vandana
>