Return-Path: X-Original-To: apmail-hadoop-yarn-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-yarn-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 66D3D1876F for ; Thu, 24 Sep 2015 01:15:04 +0000 (UTC) Received: (qmail 13251 invoked by uid 500); 24 Sep 2015 01:15:04 -0000 Delivered-To: apmail-hadoop-yarn-issues-archive@hadoop.apache.org Received: (qmail 13205 invoked by uid 500); 24 Sep 2015 01:15:04 -0000 Mailing-List: contact yarn-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: yarn-issues@hadoop.apache.org Delivered-To: mailing list yarn-issues@hadoop.apache.org Received: (qmail 13194 invoked by uid 99); 24 Sep 2015 01:15:04 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 24 Sep 2015 01:15:04 +0000 Date: Thu, 24 Sep 2015 01:15:04 +0000 (UTC) From: "Anubhav Dhoot (JIRA)" To: yarn-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (YARN-4204) ConcurrentModificationException in FairSchedulerQueueInfo MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/YARN-4204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14905621#comment-14905621 ] Anubhav Dhoot commented on YARN-4204: ------------------------------------- Issue is getChildQueues is returning an unmodifiable list wrapper over the list childQueues that itself can get modified. So even though the callers cannot modify it, they can still get CME while iterating over it if someone modifies the underlying list. > ConcurrentModificationException in FairSchedulerQueueInfo > --------------------------------------------------------- > > Key: YARN-4204 > URL: https://issues.apache.org/jira/browse/YARN-4204 > Project: Hadoop YARN > Issue Type: Bug > Reporter: Anubhav Dhoot > Assignee: Anubhav Dhoot > > Saw this exception > {noformat} > java.util.ConcurrentModificationException > at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) > at java.util.ArrayList$Itr.next(ArrayList.java:851) > at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1042) > at org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.FairSchedulerQueueInfo.(FairSchedulerQueueInfo.java:100) > at org.apache.hadoop.yarn.server.resourcemanager.webapp.dao.FairSchedulerInfo.(FairSchedulerInfo.java:46) > at org.apache.hadoop.yarn.server.resourcemanager.webapp.RMWebServices.getSchedulerInfo(RMWebServices.java:229) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:497) > at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60) > at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185) > at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) > at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) > at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469) > at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400) > at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349) > at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339) > at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416) > at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537) > at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:886) > at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:834) > at org.apache.hadoop.yarn.server.resourcemanager.webapp.RMWebAppFilter.doFilter(RMWebAppFilter.java:84) > 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$CachedChain.doFilter(ServletHandler.java:1212) > at org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:109) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:589) > at org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticationFilter.doFilter(DelegationTokenAuthenticationFilter.java:291) > at org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:552) > at org.apache.hadoop.yarn.server.security.http.RMAuthenticationFilter.doFilter(RMAuthenticationFilter.java:84) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at org.apache.hadoop.http.HttpServer2$QuotingInputFilter.doFilter(HttpServer2.java:1279) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45) > at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212) > at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45) > at org.mortbay.jetty.servlet.ServletHandler$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:767) > 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) > {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)