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Posted to issues@activemq.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2015/10/21 15:04:27 UTC

[jira] [Commented] (AMQ-6016) java.lang.IllegalArgumentException: Comparison method violates its general contract!

    [ https://issues.apache.org/jira/browse/AMQ-6016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14966772#comment-14966772 ] 

ASF subversion and git services commented on AMQ-6016:
------------------------------------------------------

Commit 5d697cff3b0f98a2d4d4f7176508bbbc77305d5d in activemq's branch refs/heads/master from [~gtully]
[ https://git-wip-us.apache.org/repos/asf?p=activemq.git;h=5d697cf ]

https://issues.apache.org/jira/browse/AMQ-6016 - rework fix for https://issues.apache.org/jira/browse/AMQ-2106 - account group assignment on a per destination basis to prevent modification during consumer ordering


> 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
>
>
> 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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