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From Kumar Harshit <hkumar.ar...@gmail.com>
Subject Re: Problem with configuring Fair Schduler
Date Mon, 03 May 2010 05:16:41 GMT
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
<vayyalas@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
>

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