[jira] [Created] (MAPREDUCE-2528) NullPointerException in the job tracker UI, when we perform kill or change the priority of jobs without selecting the any job.

["Devaraj K (JIRA)" <ji...@apache.org>]

NullPointerException in the job tracker UI, when we perform kill or change the priority of jobs without selecting the any job.
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                 Key: MAPREDUCE-2528
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2528
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: jobtracker
    Affects Versions: 0.23.0
            Reporter: Devaraj K
            Assignee: Devaraj K


If we click on Kill Selected Jobs or Change button without selecting any job, it is giving the below exception in the UI.

{code}
java.lang.NullPointerException
at org.apache.hadoop.http.HttpServer$QuotingInputFilter$RequestQuoter.getParameterValues(HttpServer.java:798)
at org.apache.hadoop.mapred.JSPUtil.processButtons(JSPUtil.java:209)
at org.apache.hadoop.mapred.jobtracker_jsp._jspService(jobtracker_jsp.java:146)
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$CachedChain.doFilter(ServletHandler.java:1124)
at org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:871)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1115)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:361)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:879)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:741)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:213)
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)
{code}

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