Matthias, Could you paste-bin a grep of the job ID (If job ID is job_<Num>_<Num>, grep just for <Num>_<Num>) from your JobTracker log and send the link across?
That error you point out to is https://issues.apache.org/jira/browse/MAPREDUCE-5 and should be harmless/not-the-real-issue-here. On Thu, Feb 16, 2012 at 4:20 PM, Matthias Zengler <[email protected]> wrote: > Hello Community, > > I'm using hadoop in version 0.20.2-cdh3u2. I do some hard graph analysis on > graphs with a few 100 millions of nodes. Unfortunately the map/reduce > freezes at map -> 100% and red -> 100%. > Sometimes in first M/R step, sometimes in the second one. I'm quiet sure > that isn't an issue with the software, so I'm searching the logs of hadoop. > I repeatedly found the following error and want to know what to do to > prevent this and whether this might be the problem. Sample: > > 2012-02-14 18:35:08,250 ERROR org.mortbay.log: /mapOutput > java.lang.IllegalStateException: Committed > at org.mortbay.jetty.Response.resetBuffer(Response.java:1023) > at org.mortbay.jetty.Response.sendError(Response.java:240) > at > org.apache.hadoop.mapred.TaskTracker$MapOutputServlet.doGet(TaskTracker.java:3815) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221) > at > org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:829) > at > org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) > at > org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450) > 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:326) > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) > at > org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) > at > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410) > at > org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) > > Would be glad if you could help me, > Greetings, > Mat -- Harsh J Customer Ops. Engineer Cloudera | http://tiny.cloudera.com/about
