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Justin Bertram commented on ARTEMIS-3509: ----------------------------------------- [~Elodie], can you elaborate on how you were able to reproduce the exception? I need sufficient detail to reproduce the failure for myself. Thanks! > STOMP Websocket client disconnected after ConcurrentModificationException in > Broker > ----------------------------------------------------------------------------------- > > Key: ARTEMIS-3509 > URL: https://issues.apache.org/jira/browse/ARTEMIS-3509 > Project: ActiveMQ Artemis > Issue Type: Bug > Components: Broker > Affects Versions: 2.16.0 > Reporter: Elodie Vandromme > Priority: Major > > Web clients connected through WebSocket are randomly disconnected from > artemis broker without notification of the disconnection. > A ConcurrentModificationException is raised; > {noformat} > [2021-09-28 10:26:53,591] - [WILDFLY] - [WARN ] - [Thread-11 > ([ActiveMQ-server-org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl$6@444dc7ba|mailto:ActiveMQ-server-org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl$6@444dc7ba])] > - [org.apache.activemq.artemis.core.server] : *AMQ222151: removing consumer > which did not handle a message*, consumer=ServerConsumerImpl [id=1990, > filter=null, binding=LocalQueueBinding [address=jms.topic.defended_assetFull, > queue=QueueImpl[name=d1586796-2035-11ec-8d2e-00505689a76b, > postOffice=PostOfficeImpl > [server=ActiveMQServerImpl::serverUUID=2f00c36f-2034-11ec-8d2e-00505689a76b], > temp=true]@4180826b, filter=null, name=d1586796-2035-11ec-8d2e-00505689a76b, > clusterName=d1586796-2035-11ec-8d2e-00505689a76b2f00c36f-2034-11ec-8d2e-00505689a76b]], > > message=Reference[2019]:RELIABLE:CoreMessage[messageID=2019,durable=true,userID=d5e2d1c3-2035-11ec-8d2e-00505689a76b,priority=4, > timestamp=Tue Sep 28 10:26:53 CEST 2021,expiration=0, durable=true, > address=jms.topic.defended_assetFull,size=6520,properties=TypedProperties[__AMQ_CID=f9eab79a-2034-11ec-8d2e-00505689a76b,_AMQ_ROUTING_TYPE=0]]@155890432: > java.util.ConcurrentModificationException > at > java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909) > at java.util.ArrayList$Itr.next(ArrayList.java:859) > at > org.apache.activemq.artemis.core.server.impl.RefsOperation.afterCommit(RefsOperation.java:179) > at > org.apache.activemq.artemis.core.transaction.impl.TransactionImpl.afterCommit(TransactionImpl.java:579) > at > org.apache.activemq.artemis.core.transaction.impl.TransactionImpl.access$100(TransactionImpl.java:40) > at > org.apache.activemq.artemis.core.transaction.impl.TransactionImpl$2.done(TransactionImpl.java:322) > at > org.apache.activemq.artemis.core.persistence.impl.journal.OperationContextImpl.executeOnCompletion(OperationContextImpl.java:190) > at > org.apache.activemq.artemis.core.persistence.impl.journal.OperationContextImpl.executeOnCompletion(OperationContextImpl.java:128) > at > org.apache.activemq.artemis.core.persistence.impl.journal.AbstractJournalStorageManager.afterCompleteOperations(AbstractJournalStorageManager.java:321) > at > org.apache.activemq.artemis.core.transaction.impl.TransactionImpl.commit(TransactionImpl.java:313) > at > org.apache.activemq.artemis.core.transaction.impl.TransactionImpl.commit(TransactionImpl.java:264) > at > org.apache.activemq.artemis.core.server.impl.ServerSessionImpl.commit(ServerSessionImpl.java:1284) > at > org.apache.activemq.artemis.core.protocol.stomp.StompSession$1.run(StompSession.java:164) > at > org.apache.activemq.artemis.core.protocol.stomp.StompSession.afterDelivery(StompSession.java:116) > at > org.apache.activemq.artemis.core.server.impl.ServerConsumerImpl.proceedDeliver(ServerConsumerImpl.java:511) > at > org.apache.activemq.artemis.core.server.impl.QueueImpl.proceedDeliver(QueueImpl.java:3744) > at > org.apache.activemq.artemis.core.server.impl.QueueImpl.deliver(QueueImpl.java:3048) > at > org.apache.activemq.artemis.core.server.impl.QueueImpl.access$2400(QueueImpl.java:125) > at > org.apache.activemq.artemis.core.server.impl.QueueImpl$DeliverRunner.run(QueueImpl.java:4119) > at > org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:42) > at > org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:31) > at > org.apache.activemq.artemis.utils.actors.ProcessorBase.executePendingTasks(ProcessorBase.java:65) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) > at > org.apache.activemq.artemis.utils.ActiveMQThreadFactory$1.run(ActiveMQThreadFactory.java:118) > {noformat} > Artemis (2.16.0) is deployed in Wildfly (24.0.1.Final) > Clients are connected to stomp acceptor: > {code:xml} > <acceptor name="stomp-over-ws" > factory-class="org.apache.activemq.artemis.core.remoting.impl.netty.NettyAcceptorFactory"> > <param name="host" value="0.0.0.0" /> > <param name="protocols" value="STOMP" /> > <param name="port" value="61614" /> > </acceptor> > {code} > Bug is random but is reproduced quite often with a full scenario we have (on > one topic or another) so we are able to reproduce it and add logs if > necessary. -- This message was sent by Atlassian Jira (v8.20.1#820001)