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https://issues.apache.org/jira/browse/MAPREDUCE-3706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13217596#comment-13217596
]
Robert Joseph Evans commented on MAPREDUCE-3706:
------------------------------------------------
I don't completely know what is happening, but I can reproduce this 100% of the
time by going to a page for a reducer that has not been launched yet. We get a
null pointer exception
{noformat}
java.lang.reflect.InvocationTargetException
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$CachedChain.doFilter(ServletHandler.java:1212)
at
org.apache.hadoop.yarn.server.webproxy.amfilter.AmIpFilter.doFilter(AmIpFilter.java:120)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
at
org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:940)
at
org.mortbay.jetty.servlet.ServletHandler$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:322)
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.lang.NullPointerException
at
org.apache.hadoop.yarn.util.ConverterUtils.toString(ConverterUtils.java:145)
at
org.apache.hadoop.mapreduce.v2.app.webapp.dao.TaskAttemptInfo.<init>(TaskAttemptInfo.java:69)
at
org.apache.hadoop.mapreduce.v2.app.webapp.dao.TaskAttemptInfo.<init>(TaskAttemptInfo.java:60)
at
org.apache.hadoop.mapreduce.v2.app.webapp.TaskPage$AttemptsBlock.render(TaskPage.java:76)
at
org.apache.hadoop.yarn.webapp.view.HtmlBlock.render(HtmlBlock.java:64)
at
org.apache.hadoop.yarn.webapp.view.HtmlBlock.renderPartial(HtmlBlock.java:74)
at org.apache.hadoop.yarn.webapp.View.render(View.java:233)
at
org.apache.hadoop.yarn.webapp.view.HtmlPage$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.task(AppController.java:250)
... 37 more
{noformat}
But for some reason this gets turned into a 302 which causes it to redirect.
{noformat}2012-02-27 21:40:53,655 DEBUG [9538612@qtp-31361704-2 -
/mapreduce/task/task_1330378805203_0001_r_000016] org.mortbay.log: RESPONSE
/mapreduce/task/task_1330378805203_0001_r_000016 302
{noformat}
I can probably fix the null pointer exception, but I want to understand why we
are doing a redirect too.
> HTTP Circular redirect error on the job attempts page
> -----------------------------------------------------
>
> Key: MAPREDUCE-3706
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3706
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.0
> Reporter: Thomas Graves
> Assignee: Robert Joseph Evans
> Priority: Critical
>
> submitted job and tried to go to following url:
> http://rmhost.domain.com:8088/proxy/application_1326992308313_0004/mapreduce/attempts/job_1326992308313_4_4/m/NEW
> This resulted in the following HTTP ERROR:
> HTTP ERROR 500
> Problem accessing
> /proxy/application_1326992308313_0004/mapreduce/attempts/job_1326992308313_4_4/m/NEW.
> Reason:
> Circular redirect to
> 'http://amhost.domain.com:44869/mapreduce/attempts/job_1326992308313_4_4/m/NEW'
> Caused by:
> org.apache.commons.httpclient.CircularRedirectException: Circular redirect to
> 'http://amhost.domain.com:44869/mapreduce/attempts/job_1326992308313_4_4/m/NEW'
> at
> org.apache.commons.httpclient.HttpMethodDirector.processRedirectResponse(HttpMethodDirector.java:638)
> at
> org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:179)
> at
> org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
> at
> org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
> at
> org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet.proxyLink(WebAppProxyServlet.java:148)
> at
> org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet.doGet(WebAppProxyServlet.java:269)
> 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
> com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:66)
> 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)
> Note that if you first go to the proxy at:
> http://rmhost.domain.com:8088/proxy/application_1326992308313_0004/ and then
> click the links to get here you don't get the error.
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