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Type: Bug
Resolution: Done
Priority: Major
Fix Version/s: AMQ 7.2.2.GA
Affects Version/s: AMQ 7.2.0.GA
Component/s: broker-core
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Affects:

Release Notes
GSS Priority:
Release Note Text:

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In previous releases, multiple threads could concurrently modify a message's properties. This resulted in WARN messages in the log when TRACE-level logging was enabled. Now, concurrent access to message properties is done safely and the WARN messages in the log related to this issue no longer occur.

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In previous releases, multiple threads could concurrently modify a message's properties. This resulted in WARN messages in the log when TRACE-level logging was enabled. Now, concurrent access to message properties is done safely and the WARN messages in the log related to this issue no longer occur.
Release Note Status:
Documented as Resolved Issue
Target Release:

AMQ 7.2.2.GA
Upstream Jira:
https://issues.apache.org/jira/browse/ARTEMIS-2095

Sprint:
AMQ Broker 1839

SFDC Cases Counter:
SFDC Cases Open:
SFDC Cases Links:

Enabling TRACE-level logging in the broker leads periodically to the following exception being thrown, and messaging operations fail. It is therefore impossible to collect diagnostics at this level in a production environment.

2018-09-20 11:23:52,493 WARN  [org.apache.activemq.artemis.core.message.impl.CoreMessage] Error creating String for message: : java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437) [rt.jar:1.8.0_102]
	at java.util.HashMap$EntryIterator.next(HashMap.java:1471) [rt.jar:1.8.0_102]
	at java.util.HashMap$EntryIterator.next(HashMap.java:1469) [rt.jar:1.8.0_102]
	at org.apache.activemq.artemis.utils.collections.TypedProperties.toString(TypedProperties.java:464) [artemis-commons-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at java.lang.String.valueOf(String.java:2994) [rt.jar:1.8.0_102]
	at java.lang.StringBuilder.append(StringBuilder.java:131) [rt.jar:1.8.0_102]
	at org.apache.activemq.artemis.core.message.impl.CoreMessage.toString(CoreMessage.java:1200) [artemis-core-client-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at java.lang.String.valueOf(String.java:2994) [rt.jar:1.8.0_102]
	at java.lang.StringBuilder.append(StringBuilder.java:131) [rt.jar:1.8.0_102]
	at org.apache.activemq.artemis.core.protocol.core.impl.wireformat.MessagePacket.getParentString(MessagePacket.java:39) [artemis-core-client-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.core.protocol.core.impl.wireformat.SessionReceiveMessage.toString(SessionReceiveMessage.java:95) [artemis-core-client-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at java.lang.String.valueOf(String.java:2994) [rt.jar:1.8.0_102]
	at java.lang.StringBuilder.append(StringBuilder.java:131) [rt.jar:1.8.0_102]
	at org.apache.activemq.artemis.core.protocol.core.impl.ChannelImpl.send(ChannelImpl.java:274) [artemis-core-client-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.core.protocol.core.impl.ChannelImpl.sendBatched(ChannelImpl.java:239) [artemis-core-client-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.core.protocol.core.impl.CoreSessionCallback.sendMessage(CoreSessionCallback.java:128) [artemis-server-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.core.server.impl.ServerConsumerImpl.deliverStandardMessage(ServerConsumerImpl.java:1106) [artemis-server-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.core.server.impl.ServerConsumerImpl.proceedDeliver(ServerConsumerImpl.java:464) [artemis-server-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.core.server.impl.QueueImpl.proceedDeliver(QueueImpl.java:2938) [artemis-server-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.core.server.impl.QueueImpl.deliver(QueueImpl.java:2406) [artemis-server-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.core.server.impl.QueueImpl.access$2000(QueueImpl.java:107) [artemis-server-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.core.server.impl.QueueImpl$DeliverRunner.run(QueueImpl.java:3211) [artemis-server-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:42) [artemis-commons-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.utils.actors.OrderedExecutor.doTask(OrderedExecutor.java:31) [artemis-commons-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at org.apache.activemq.artemis.utils.actors.ProcessorBase.executePendingTasks(ProcessorBase.java:66) [artemis-commons-2.6.1.amq-720008.jar:2.6.1.amq-720008]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_102]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_102]
	at org.apache.activemq.artemis.utils.ActiveMQThreadFactory$1.run(ActiveMQThreadFactory.java:118) [artemis-commons-2.6.1.amq-720008.jar:2.6.1.amq-720008]

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TypedPropertiesConcurrencyTest.java
6 kB
2018/09/25 4:35 AM

causes

ENTMQBR-2011 Consumer of store-forward internal queues get dropped when syncing large messages

Closed

is duplicated by

ENTMQBR-2461 HQPropertiesConverter class throws a java.util.ConcurrentModificationException while processing message headers

Closed

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