No, not seeing multiple messages. However, what I noticed just now i that it seems to be after some period of inactivity. And maybe that's just because part of the call stack contains a class called "InactivityMonitor."
at org.apache.activemq.broker.region.PrefetchSubscription.assertAckMatchesDispatched(PrefetchSubscription.java:442) at org.apache.activemq.broker.region.PrefetchSubscription.acknowledge(PrefetchSubscription.java:188) at org.apache.activemq.broker.region.AbstractRegion.acknowledge(AbstractRegion.java:373) at org.apache.activemq.broker.region.RegionBroker.acknowledge(RegionBroker.java:462) at org.apache.activemq.broker.TransactionBroker.acknowledge(TransactionBroker.java:194) at org.apache.activemq.broker.BrokerFilter.acknowledge(BrokerFilter.java:74) at org.apache.activemq.broker.BrokerFilter.acknowledge(BrokerFilter.java:74) at org.apache.activemq.broker.MutableBrokerFilter.acknowledge(MutableBrokerFilter.java:85) at org.apache.activemq.broker.TransportConnection.processMessageAck(TransportConnection.java:456) at org.apache.activemq.command.MessageAck.visit(MessageAck.java:205) at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:305) at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:179) at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:68) at org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:143) at org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:206) penguinone wrote: > > > We're seeing on both 5.2 and 5.3. > > I have to check to see if we're getting duplicate messages. I don't think > so but I have to check the logs when I get in. > > > rajdavies wrote: >> >> Which version of ActiveMQ ? >> On 25 Sep 2009, at 01:50, penguinone wrote: >> >>> >>> >>> We set up our active MQ to fail over (failover:// >>> (host1:61616,host2:61616)). >>> >>> I'm getting these fairly frequently, and I've only seen them related >>> to >>> memory in other people's posts. Unlikely to be this case as I'm >>> operating in >>> a low volume test environment. Any leads as to what else might be the >>> problem? >>> >>> WARN Service - Async error occurred: >>> javax.jms.JMSException: Unmatched acknowledege: MessageAck >>> {commandId = 71, >>> responseRequired = false, ackType = 2, consumerId = >>> ID:domU-12-31-38-01-89-01-48240-1253838130518-0:55:1:1, >>> firstMessageId = >>> null, lastMessageId = >>> ID:domU-12-31-38-01-89-01-48240-1253838130518-0:68:1:1:1, >>> destination = >>> queue://queue.MOBLAH, transactionId = >>> TX:ID:domU-12-31-38-01-89-01-48240-1253838130518-0:55:22, >>> messageCount = 3}; >>> Could not find Message-ID >>> ID:domU-12-31-38-01-89-01-48240-1253838130518-0:68:1:1:1 in >>> dispatched-list >>> (end of ack) >>> javax.jms.JMSException: Unmatched acknowledege: MessageAck >>> {commandId = 71, >>> responseRequired = false, ackType = 2, consumerId = >>> ID:domU-12-31-38-01-89-01-48240-1253838130518-0:55:1:1, >>> firstMessageId = >>> null, lastMessageId = >>> ID:domU-12-31-38-01-89-01-48240-1253838130518-0:68:1:1:1, >>> destination = >>> queue://queue.MOBLAH, transactionId = >>> TX:ID:domU-12-31-38-01-89-01-48240-1253838130518-0:55:22, >>> messageCount = 3}; >>> Could not find Message-ID >>> ID:domU-12-31-38-01-89-01-48240-1253838130518-0:68:1:1:1 in >>> dispatched-list >>> (end of ack) >>> at >>> org >>> .apache >>> .activemq >>> .broker >>> .region >>> .PrefetchSubscription >>> .assertAckMatchesDispatched(PrefetchSubscription.java:444) >>> at >>> org >>> .apache >>> .activemq >>> .broker >>> .region.PrefetchSubscription.acknowledge(PrefetchSubscription.java: >>> 208) >>> at >>> org >>> .apache >>> .activemq >>> .broker.region.AbstractRegion.acknowledge(AbstractRegion.java:377) >>> -- >>> View this message in context: >>> http://www.nabble.com/ActiveMQ-Failover-exception-tp25604966p25604966.html >>> Sent from the ActiveMQ - User mailing list archive at Nabble.com. >>> >> >> Rob Davies >> http://twitter.com/rajdavies >> I work here: http://fusesource.com >> My Blog: http://rajdavies.blogspot.com/ >> I'm writing this: http://www.manning.com/snyder/ >> >> >> >> >> >> >> > > -- View this message in context: http://www.nabble.com/ActiveMQ-Failover-exception-tp25604966p25617837.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.