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Hadoop, mail # user - Jetty exception while running Hadoop


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Jetty exception while running Hadoop
Mark Kerzner 2011-12-12, 02:31
Hi,

I keep getting the exception below. I've rebuild my EC2 cluster completely,
and verified it on small jobs, but I still get it once I run anything
sizable. The job runs, but I only get one part-00000 file, even though I
have 4 nodes and would expect for output files. Any help please?

Thank you,
Mark

112120200_0004_m_000006_0, duration: 629002475
2011-12-12 02:24:43,557 WARN org.apache.hadoop.mapred.TaskTracker:
getMapOutput(attempt_201112120200_0004_m_000007_0,0) failed :
org.mortbay.jetty.EofException
        at org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:791)
        at
org.mortbay.jetty.AbstractGenerator$Output.blockForOutput(AbstractGenerator.java:551)
        at
org.mortbay.jetty.AbstractGenerator$Output.flush(AbstractGenerator.java:572)
        at
org.mortbay.jetty.HttpConnection$Output.flush(HttpConnection.java:1012)
        at
org.mortbay.jetty.AbstractGenerator$Output.write(AbstractGenerator.java:651)
        at
org.mortbay.jetty.AbstractGenerator$Output.write(AbstractGenerator.java:580)
        at
org.apache.hadoop.mapred.TaskTracker$MapOutputServlet.doGet(TaskTracker.java:3788)
        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)
Caused by: java.io.IOException: Broken pipe
        at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
        at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
        at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:89)
        at sun.nio.ch.IOUtil.write(IOUtil.java:60)
        at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:450)
        at
org.mortbay.io.nio.ChannelEndPoint.flush(ChannelEndPoint.java:171)
        at
org.mortbay.io.nio.SelectChannelEndPoint.flush(SelectChannelEndPoint.java:221)
        at org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:725)
        ... 27 more

2011-12-12 02:24:43,557 WARN org.mortbay.log: Committed before 410
getMapOutput(attempt_201112120200_0004_m_000007_0,0) failed :
org.mortbay.jetty.EofException
        at org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:791)
        at
org.mortbay.jetty.AbstractGenerator$Output.blockForOutput(AbstractGenerator.java:551)
        at
org.mortbay.jetty.AbstractGenerator$Output.flush(AbstractGenerator.java:572)
        at
org.mortbay.jetty.HttpConnection$Output.flush(HttpConnection.java:1012)
        at
org.mortbay.jetty.AbstractGenerator$Output.write(AbstractGenerator.java:651)
        at
org.mortbay.jetty.AbstractGenerator$Output.write(AbstractGenerator.java:580)
        at
org.apache.hadoop.mapred.TaskTracker$MapOutputServlet.doGet(TaskTracker.java:3788)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)