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https://issues.apache.org/jira/browse/ARTEMIS-3509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17457246#comment-17457246
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Elodie Vandromme commented on ARTEMIS-3509:
-------------------------------------------
[~jbertram], we reproduced it randomly with our application that I can not
provide to you. And as I do not know the root cause of that issue, I'm not able
to provide a sample that is able to reproduce the issue neither.
We could provide more logs if this can be helful for you (maybe you could
provide us the list of logs to activate or a jar with more relevant logs that
could be useful to you).
> 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.
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