Re: [Resteasy-users] Intermittent java.util.ConcurrentModificationException due to jboss.resteasy.core.ServerResponseWriter

[Ron S. <rs...@re...>]

Hi Danilo,

Can we see the filter?

-Ron

On 07/02/2015 11:17 PM, Danilo Cominotti Marques wrote:
>
> Hello everyone,
>
>
> I have been facing an intermittent issue with RESTEasy 3.0.10 from 
> WildFly 8.2 and I don't know how to interpret it. Once a day, I 
> usually see the following kind of log entry from WildFly/RESTEasy:
>
>
> 16:11:46,385 ERROR [io.undertow.request] (default task-58) UT005023: 
> Exception handling request to /project/rest/entity/query: 
> org.jboss.resteasy.spi.UnhandledException: 
> java.util.ConcurrentModificationException
>
>        at 
> org.jboss.resteasy.core.ExceptionHandler.handleException(ExceptionHandler.java:247) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        at 
> org.jboss.resteasy.core.SynchronousDispatcher.writeException(SynchronousDispatcher.java:149) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        at 
> org.jboss.resteasy.core.SynchronousDispatcher.writeResponse(SynchronousDispatcher.java:432) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        at 
> org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:376) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        at 
> org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        at 
> org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        at 
> org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        at 
> org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) 
> [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]
>
>        at 
> io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
>
>        at 
> io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
> [undertow-core-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
> [undertow-core-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) 
> [undertow-core-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:63) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) 
> [undertow-core-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) 
> [undertow-core-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
> [undertow-core-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
>
>        at 
> io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
> [undertow-core-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) 
> [undertow-core-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:261) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:247) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:76) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:166) 
> [undertow-servlet-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.server.Connectors.executeRootHandler(Connectors.java:197) 
> [undertow-core-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759) 
> [undertow-core-1.1.0.Final.jar:1.1.0.Final]
>
>        at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
> [rt.jar:1.8.0_31]
>
>        at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
> [rt.jar:1.8.0_31]
>
>        at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_31]
>
> Caused by: java.util.ConcurrentModificationException
>
>        at java.util.ArrayList$Itr.remove(ArrayList.java:873) 
> [rt.jar:1.8.0_31]
>
>        at 
> org.jboss.resteasy.core.ServerResponseWriter.commitHeaders(ServerResponseWriter.java:225) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        at 
> org.jboss.resteasy.core.ServerResponseWriter.writeNomapResponse(ServerResponseWriter.java:54) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        at 
> org.jboss.resteasy.core.SynchronousDispatcher.writeResponse(SynchronousDispatcher.java:427) 
> [resteasy-jaxrs-3.0.10.Final.jar:]
>
>        ... 32 more
>
>
> This seems to happen to "random" endpoints from the API, and I don't 
> know what the cause might be. I have a JAX-RS filter that sets a 
> cookie in most responses from the API, but I can't identify any 
> problems with it.
>
>
> Please, does anyone have any ideas?
>
>
> Thank you in advance for any help.
>
>
> Respectfully yours,
>
>
> Danilo Cominotti Marques
>
>
>
>
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