Could you open a JIRA issue for this? After a quick look, it could be firstSearcher / newSearcher events that are being executed concurrently that change the list? Could you try commenting out firstSearcher/newSearcher events in solrconfig.xml and see if that fixes it?
It could be that a lazy loaded component is triggered by a firstSearcher/newSearcher event, which happen in other threads, causing another bean to be added. -Yonik http://www.lucidimagination.com On Fri, Feb 26, 2010 at 2:28 PM, Dan Hertz (Insight 49, LLC) <insigh...@gmail.com> wrote: > Hi guys, > > SOLR 1.4 (final) and 1.5 nightly work fine on a Windows box, but on our > Centos 5 box, we're getting a ConcurrentModificationException when starting > Tomcat 6. > > Any tips on how to solve this and/or troubleshoot? > > Made sure there are no duplicate libs in Tomcat and solr/lib, and tried to > cut down contrib stuff to see if it helped, but no luck. > > Thanks, Dan. > > = = = Log Below: = = = > > INFO | jvm 1 | 2010/02/24 21:27:04 | SEVERE: > java.util.ConcurrentModificationException > INFO | jvm 1 | 2010/02/24 21:27:04 | at > java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > java.util.AbstractList$Itr.next(AbstractList.java:343) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.solr.core.SolrResourceLoader.inform(SolrResourceLoader.java:507) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.solr.core.SolrCore.<init>(SolrCore.java:606) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.solr.core.CoreContainer.create(CoreContainer.java:429) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.solr.core.CoreContainer.load(CoreContainer.java:285) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:117) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:86) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3800) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.StandardContext.start(StandardContext.java:4450) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:630) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:556) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:491) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.startup.HostConfig.start(HostConfig.java:1206) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:314) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.StandardHost.start(StandardHost.java:722) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.StandardService.start(StandardService.java:516) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.core.StandardServer.start(StandardServer.java:710) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.startup.Catalina.start(Catalina.java:583) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > java.lang.reflect.Method.invoke(Method.java:597) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > java.lang.reflect.Method.invoke(Method.java:597) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > org.tanukisoftware.wrapper.WrapperStartStopApp.run(WrapperStartStopApp.java:242) > INFO | jvm 1 | 2010/02/24 21:27:04 | at > java.lang.Thread.run(Thread.java:619) > >
