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https://issues.apache.org/jira/browse/ARTEMIS-5164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17930442#comment-17930442
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Clebert Suconic commented on ARTEMIS-5164:
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[~jjmarinfuturespace] are you playing with multiple priorities?
if you are, would the same issue happen if you didn't use priorities (keep all
priorities at 4?)
just trying to isolate some edge case within the LinkedList::addSorted versus
some wrong usage with Priority / add sorted similar to what happened in
ARTEMIS-5038
> AMQ222225: Sending unexpected exception to the client.Message count failure
> ---------------------------------------------------------------------------
>
> Key: ARTEMIS-5164
> URL: https://issues.apache.org/jira/browse/ARTEMIS-5164
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Affects Versions: 2.35.0
> Environment: <cluster-connections>
> <cluster-connection name="mccon">
> <connection-ttl>60000</connection-ttl>
> <call-timeout>5000</call-timeout>
> <retry-interval>500</retry-interval>
> <retry-interval-multiplier>1.0</retry-interval-multiplier>
> <max-retry-interval>5000</max-retry-interval>
> <initial-connect-attempts>-1</initial-connect-attempts>
> <reconnect-attempts>-1</reconnect-attempts>
> <forward-when-no-consumers>false</forward-when-no-consumers>
> <connector-ref>artemis</connector-ref>
> <message-load-balancing>ON_DEMAND</message-load-balancing>
> <max-hops>1</max-hops>
> <static-connectors>
> <connector-ref>node0</connector-ref>
> <connector-ref>node1</connector-ref>
> <connector-ref>node2</connector-ref>
>
> </static-connectors>
> </cluster-connection>
> </cluster-connections>
> Reporter: jjmarin
> Priority: Major
> Attachments: ErrorConsumers1.PNG, ErrorConsumers2.PNG, artemis.log,
> broker.xml
>
>
> Testing by sending a lot of messages by brokers, about 200,000. We have
> noticed that the count of messages in the queue is broken. When we finished
> consuming messages the website showed us that we had 22 messages. We checked
> if they were scheduled and using the Jolokia API. It told us that we had no
> scheduled messages.
> Checking the log we see that there are 22 instances of
> {{NullPointerException}} with:
> {noformat}
> WARN [org.apache.activemq.artemis.core.server] AMQ222225: Sending unexpected
> exception to the client
> java.lang.NullPointerException: Cannot invoke
> "org.apache.activemq.artemis.core.server.MessageReference.getSequence()"
> because "o1" is null
> at
> org.apache.activemq.artemis.core.server.impl.MessageReferenceImpl$MessageReferenceComparatorSequence.compare(MessageReferenceImpl.java:50)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.server.impl.MessageReferenceImpl$MessageReferenceComparatorSequence.compare(MessageReferenceImpl.java:42)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.utils.collections.LinkedListImpl.scanLeft(LinkedListImpl.java:286)
> ~[artemis-commons-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.utils.collections.LinkedListImpl.addSorted(LinkedListImpl.java:248)
> ~[artemis-commons-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.utils.collections.PriorityLinkedListImpl.addSorted(PriorityLinkedListImpl.java:93)
> ~[artemis-commons-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.server.impl.QueueImpl.internalAddSorted(QueueImpl.java:3069)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.server.impl.QueueImpl.addSorted(QueueImpl.java:1180)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.server.impl.QueueImpl.addSorted(QueueImpl.java:1215)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.server.impl.QueueImpl.postRollback(QueueImpl.java:4247)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.server.impl.RefsOperation.afterRollback(RefsOperation.java:131)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.transaction.impl.TransactionImpl.afterRollback(TransactionImpl.java:600)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.transaction.impl.TransactionImpl$4.done(TransactionImpl.java:436)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.persistence.impl.journal.OperationContextImpl.executeOnCompletion(OperationContextImpl.java:226)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.persistence.impl.journal.OperationContextImpl.executeOnCompletion(OperationContextImpl.java:168)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.persistence.impl.journal.AbstractJournalStorageManager.afterCompleteOperations(AbstractJournalStorageManager.java:352)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.transaction.impl.TransactionImpl.internalRollback(TransactionImpl.java:427)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.transaction.impl.TransactionImpl.rollback(TransactionImpl.java:400)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.server.impl.ServerConsumerImpl.close(ServerConsumerImpl.java:594)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.server.impl.ServerSessionImpl.closeConsumer(ServerSessionImpl.java:1765)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.protocol.core.ServerSessionPacketHandler.slowPacketHandler(ServerSessionPacketHandler.java:627)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.core.protocol.core.ServerSessionPacketHandler.onMessagePacket(ServerSessionPacketHandler.java:319)
> ~[artemis-server-2.35.0.jar:2.35.0]
> at org.apache.activemq.artemis.utils.actors.Actor.doTask(Actor.java:32)
> ~[artemis-commons-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.utils.actors.ProcessorBase.executePendingTasks(ProcessorBase.java:68)
> ~[artemis-commons-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:57)
> ~[artemis-commons-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:32)
> ~[artemis-commons-2.35.0.jar:2.35.0]
> at
> org.apache.activemq.artemis.utils.actors.ProcessorBase.executePendingTasks(ProcessorBase.java:68)
> ~[artemis-commons-2.35.0.jar:2.35.0]
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
> [?:?]
> at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
> [?:?]
> at
> org.apache.activemq.artemis.utils.ActiveMQThreadFactory$1.run(ActiveMQThreadFactory.java:118)
> [artemis-commons-2.35.0.jar:2.35.0]{noformat}
> We understand that this is related and we haven't found out why it happens.
> Any ideas?
>
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