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https://issues.apache.org/jira/browse/YARN-995?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13770383#comment-13770383
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sam liu commented on YARN-995:
------------------------------
I encountered similar issue on Hadoop-2.0.4-alpha
> "WebAppException" is thrown in appmaster logs if any task got failed
> --------------------------------------------------------------------
>
> Key: YARN-995
> URL: https://issues.apache.org/jira/browse/YARN-995
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.0.5-alpha
> Reporter: Nishan Shetty
>
> {code}
> 2013-07-30 14:49:42,521 INFO [IPC Server handler 13 on 31627]
> org.apache.hadoop.mapred.TaskAttemptListenerImpl: MapCompletionEvents request
> from attempt_1375161249957_0022_r_000279_0. startIndex 1002 maxEvents 3000
> 2013-07-30 14:49:42,865 INFO [IPC Server handler 19 on 31627]
> org.apache.hadoop.mapred.TaskAttemptListenerImpl: MapCompletionEvents request
> from attempt_1375161249957_0022_r_000278_0. startIndex 1002 maxEvents 3000
> 2013-07-30 14:49:42,876 INFO [IPC Server handler 23 on 31627]
> org.apache.hadoop.mapred.TaskAttemptListenerImpl: MapCompletionEvents request
> from attempt_1375161249957_0022_r_000280_0. startIndex 1002 maxEvents 3000
> 2013-07-30 14:49:42,904 ERROR [2065027703@qtp-1099518668-8]
> org.apache.hadoop.mapreduce.v2.app.webapp.AppController: Failed to render
> attempts page with task type : r for job id : job_1375161249957_0022
> org.apache.hadoop.yarn.webapp.WebAppException: Error rendering block:
> nestLevel=6 expected 5
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:66)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlBlock.renderPartial(HtmlBlock.java:74)
> at org.apache.hadoop.yarn.webapp.View.render(View.java:233)
> at
> org.apache.hadoop.yarn.webapp.view.HtmlPage$Page.subView(HtmlPage.java:47)
> at
> org.apache.hadoop.yarn.webapp.hamlet.HamletImpl$EImp._v(HamletImpl.java:117)
> at org.apache.hadoop.yarn.webapp.hamlet.Hamlet$TD._(Hamlet.java:843)
> at
> org.apache.hadoop.yarn.webapp.view.TwoColumnLayout.render(TwoColumnLayout.java:54)
> at org.apache.hadoop.yarn.webapp.view.HtmlPage.render(HtmlPage.java:80)
> at org.apache.hadoop.yarn.webapp.Controller.render(Controller.java:210)
> at
> org.apache.hadoop.mapreduce.v2.app.webapp.AppController.attempts(AppController.java:290)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.yarn.webapp.Dispatcher.service(Dispatcher.java:150)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at
> com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:263)
> at
> com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:178)
> at
> com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91)
> at
> com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:62)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:900)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:834)
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:795)
> at
> com.google.inject.servlet.FilterDefinition.doFilter(FilterDefinition.java:163)
> at
> com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:58)
> at
> com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:118)
> at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:113)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.yarn.server.webproxy.amfilter.AmIpFilter.doFilter(AmIpFilter.java:123)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.util.IpValidationFilter.doFilter(IpValidationFilter.java:77)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:1085)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
> 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)
> 2013-07-30 14:49:42,937 INFO [IPC Server handler 17 on 31627]
> org.apache.hadoop.mapred.TaskAttemptListenerImpl: Ping from
> attempt_1375161249957_0022_r_000278_0
> {code}
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