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  1. JBoss A-MQ
  2. ENTMQ-2011

duplicate message sends logged inconsistently - some times as warning, some other times as debug level.

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      Run a default broker with this additional config:

      <policyEntry queue=">" producerFlowControl="true" memoryLimit="1mb" expireMessagesPeriod="5000">

<timeStampingBrokerPlugin ttlCeiling="13" zeroExpirationOverride="13"/>

      The short expiration times are only used to reproduce the issue more quickly.
      It can also be reproduced using larger expiration times but less reliably.

      Then run these Broker Karaf commands:

      activemq:consumer --destination Consumer.A.VirtualTopic.Orders --messageCount 1

activemq:consumer --destination Consumer.B.VirtualTopic.Orders --messageCount 1000 --sleep 10000

activemq:producer --persistent true --messageCount 10000 --destination topic://VirtualTopic.Orders

      and watch the broker log file. The warning will appear many times.
      If in addition you configure:

      log4j.logger.org.apache.activemq.broker.region.RegionBroker=DEBUG
log4j.logger.org.apache.activemq.broker.region.policy.AbstractDeadLetterStrategy=DEBUG

      you will also see the above DEBUG logging.

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      Run a default broker with this additional config: <policyEntry queue= ">" producerFlowControl= " true " memoryLimit= "1mb" expireMessagesPeriod= "5000" > <timeStampingBrokerPlugin ttlCeiling= "13" zeroExpirationOverride= "13" /> The short expiration times are only used to reproduce the issue more quickly. It can also be reproduced using larger expiration times but less reliably. Then run these Broker Karaf commands: activemq:consumer --destination Consumer.A.VirtualTopic.Orders --messageCount 1 activemq:consumer --destination Consumer.B.VirtualTopic.Orders --messageCount 1000 --sleep 10000 activemq:producer --persistent true --messageCount 10000 --destination topic: //VirtualTopic.Orders and watch the broker log file. The warning will appear many times. If in addition you configure: log4j.logger.org.apache.activemq.broker.region.RegionBroker=DEBUG log4j.logger.org.apache.activemq.broker.region.policy.AbstractDeadLetterStrategy=DEBUG you will also see the above DEBUG logging.

      There is an inconsistency of the logging level at which duplicate messages are reported by the broker.
      The use case is a virtual topic with multiple queue subscribers and a message expiry set on each message.
      If the message expires on at least two queues *before* getting dispatched to a consumer it sometimes raises this as a warning 

      12:36:04,794 | WARN  | r[amq] Scheduler | MessageDatabase  | 189 - 
org.apache.activemq.activemq-osgi - 5.11.0.redhat-621117 | 
Duplicate message add attempt rejected. Destination: QUEUE://ActiveMQ.DLQ, 
Message id: ID:ce9f58739725-57928-1479472408621-21:1:1:1:6078

      and some times as a debug message 

      14:47:54,332 | DEBUG | vice[amq] Task-4 | AbstractDeadLetterStrategy       | 189 - 
org.apache.activemq.activemq-osgi - 5.11.0.redhat-621117 | 
Not adding duplicate to DLQ: ID:66b6b257b61e-45558-1478789174147-11:1:1:1:2, 
dest: topic://VirtualTopic.Orders

      This logging should be consistent and happen at the same logging level.

              gtully@redhat.com Gary Tully
              rhn-support-tmielke Torsten Mielke
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                Created:
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