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https://issues.apache.org/jira/browse/AMQ-6016?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christopher L. Shannon updated AMQ-6016:
----------------------------------------
Fix Version/s: 5.12.2
> java.lang.IllegalArgumentException: Comparison method violates its general
> contract!
> ------------------------------------------------------------------------------------
>
> Key: AMQ-6016
> URL: https://issues.apache.org/jira/browse/AMQ-6016
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.10.0
> Reporter: Gary Tully
> Assignee: Gary Tully
> Fix For: 5.13.0, 5.12.2
>
>
> The message group balancing is based on state in the consumer that can be
> shared across destinations in error. Under load this can lead to:{code}
> 2015-04-13 10:24:20,034 | WARN | IO Worker 308792 | Service
> | ivemq.broker.TransportConnection 312 | 121 -
> org.apache.activemq.activemq-osgi - 5.9.0 | Async error occurred:
> java.lang.IllegalArgumentException: Comparison method violates its general
> contract!
> at java.util.TimSort.mergeHi(TimSort.java:868)[:1.7.0_65]
> at java.util.TimSort.mergeAt(TimSort.java:485)[:1.7.0_65]
> at java.util.TimSort.mergeCollapse(TimSort.java:410)[:1.7.0_65]
> at java.util.TimSort.sort(TimSort.java:214)[:1.7.0_65]
> at java.util.TimSort.sort(TimSort.java:173)[:1.7.0_65]
> at java.util.Arrays.sort(Arrays.java:659)[:1.7.0_65]
> at java.util.Collections.sort(Collections.java:217)[:1.7.0_65]
> at
> org.apache.activemq.broker.region.Queue.addToConsumerList(Queue.java:2131)[121:org.apache.activemq.activemq-osgi:5.9.0]
> at
> org.apache.activemq.broker.region.Queue.doActualDispatch(Queue.java:2067)[121:org.apache.activemq.activemq-osgi:5.9.0]
> at
> org.apache.activemq.broker.region.Queue.doDispatch(Queue.java:1972)[121:org.apache.activemq.activemq-osgi:5.9.0]
> at
> org.apache.activemq.broker.region.Queue.removeSubscription(Queue.java:587)[121:org.apache.activemq.activemq-osgi:5.9.0]
> at
> org.apache.activemq.broker.region.DestinationFilter.removeSubscription(DestinationFilter.java:127)[121:org.apache.activemq.activemq-osgi:5.9.0]
> at ......
> at java.lang.Thread.run(Thread.java:745)[:1.7.0_65]{code}
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