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  1. ActiveMQ
  2. AMQ-6016

java.lang.IllegalArgumentException: Comparison method violates its general contract!

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 5.10.0
    • Fix Version/s: 5.13.0, 5.12.2
    • Component/s: Broker
    • Labels:
      None

      Description

      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:

      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]

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              • Assignee:
                gtully Gary Tully
                Reporter:
                gtully Gary Tully
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                • Created:
                  Updated:
                  Resolved: