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https://issues.apache.org/activemq/browse/AMQ-1918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=48671#action_48671
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Richard Yarger commented on AMQ-1918:
-------------------------------------

I also have the following errors during startup:
ERROR Service                        - Async error occurred: 
javax.jms.JMSException: Transaction 'TX:ID:vibes-richyarger-1501
-1231882347001-0:0:1' has not been started.
javax.jms.JMSException: Transaction 
'TX:ID:vibes-richyarger-1501-1231882347001-0:0:1' has not been started.
        at 
org.apache.activemq.broker.TransactionBroker.getTransaction(TransactionBroker.java:270)
        at 
org.apache.activemq.broker.TransactionBroker.acknowledge(TransactionBroker.java:190)
        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:458)
        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)
        at 
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:84)
        at 
org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:203)
        at 
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:185)
        at java.lang.Thread.run(Thread.java:595)
ERROR Service                        - Async error occurred: 
javax.jms.JMSException: Could not correlate acknowledgment with
dispatched message: MessageAck {commandId = 25, responseRequired = false, 
ackType = 3, consumerId = ID:vibes-richyarger-1501-
1231882347001-0:0:1:1, firstMessageId = null, lastMessageId = 
ID:vibes-richyarger-3948-1231881217090-0:5298:1:1:1, destinatio
n = queue://test.queue.1, transactionId = null, messageCount = 1}
javax.jms.JMSException: Could not correlate acknowledgment with dispatched 
message: MessageAck {commandId = 25, responseRequi
red = false, ackType = 3, consumerId = 
ID:vibes-richyarger-1501-1231882347001-0:0:1:1, firstMessageId = null, 
lastMessageId =
 ID:vibes-richyarger-3948-1231881217090-0:5298:1:1:1, destination = 
queue://test.queue.1, transactionId = null, messageCount
= 1}
        at 
org.apache.activemq.broker.region.PrefetchSubscription.acknowledge(PrefetchSubscription.java:330)
        at 
org.apache.activemq.broker.region.AbstractRegion.acknowledge(AbstractRegion.java:377)
        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:458)
        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)
        at 
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:84)
        at 
org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:203)
        at 
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:185)
        at java.lang.Thread.run(Thread.java:595)
INFO  WebConsoleStarter              - ActiveMQ WebConsole initialized.
ERROR Service                        - Async error occurred: 
javax.jms.JMSException: Unmatched acknowledege: MessageAck {comm
andId = 49, responseRequired = false, ackType = 2, consumerId = 
ID:vibes-richyarger-1501-1231882347001-0:0:2:1, firstMessageI
d = null, lastMessageId = ID:vibes-richyarger-3948-1231881217090-0:4731:1:1:1, 
destination = queue://test.queue.1, transactio
nId = TX:ID:vibes-richyarger-1501-1231882347001-0:0:7, messageCount = 1}; Could 
not find Message-ID ID:vibes-richyarger-3948-
1231881217090-0:4731:1:1:1 in dispatched-list (end of ack)
javax.jms.JMSException: Unmatched acknowledege: MessageAck {commandId = 49, 
responseRequired = false, ackType = 2, consumerId
 = ID:vibes-richyarger-1501-1231882347001-0:0:2:1, firstMessageId = null, 
lastMessageId = ID:vibes-richyarger-3948-1231881217
090-0:4731:1:1:1, destination = queue://test.queue.1, transactionId = 
TX:ID:vibes-richyarger-1501-1231882347001-0:0:7, messag
eCount = 1}; Could not find Message-ID 
ID:vibes-richyarger-3948-1231881217090-0:4731:1:1:1 in dispatched-list (end of 
ack)
        at 
org.apache.activemq.broker.region.PrefetchSubscription.assertAckMatchesDispatched(PrefetchSubscription.java:439)
        at 
org.apache.activemq.broker.region.PrefetchSubscription.acknowledge(PrefetchSubscription.java:192)
        at 
org.apache.activemq.broker.region.AbstractRegion.acknowledge(AbstractRegion.java:377)
        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:458)
        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)
        at 
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:84)
        at 
org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:203)
        at 
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:185)
        at java.lang.Thread.run(Thread.java:595)

> AbstractStoreCursor.size gets out of synch with Store size and blocks 
> consumers
> -------------------------------------------------------------------------------
>
>                 Key: AMQ-1918
>                 URL: https://issues.apache.org/activemq/browse/AMQ-1918
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Message Store
>    Affects Versions: 5.1.0
>            Reporter: Richard Yarger
>            Assignee: Rob Davies
>            Priority: Critical
>             Fix For: 5.3.0
>
>         Attachments: activemq.xml, testAMQMessageStore.zip, testdata.zip
>
>
> In version 5.1.0, we are seeing our queue consumers stop consuming for no 
> reason.
> We have a staged queue environment and we occasionally see one queue display 
> negative pending message counts that hang around -x, rise to -x+n gradually 
> and then fall back to -x abruptly. The messages are building up and being 
> processed in bunches but its not easy to see because the counts are negative. 
> We see this behavior in the messages coming out of the system. Outbound 
> messages come out in bunches and are synchronized with the queue pending 
> count dropping to -x.
> This issue does not happen ALL of the time. It happens about once a week and 
> the only way to fix it is to bounce the broker. It doesn't happen to the same 
> queue everytime, so it is not our consuming code.
> Although we don't have a reproducible scenario, we have been able to debug 
> the issue in our test environment.
> We traced the problem to the cached store size in the AbstractStoreCursor.
> This value becomes 0 or negative and prevents the AbstractStoreCursor from 
> retrieving more messages from the store. (see AbstractStoreCursor.fillBatch() 
> )
> We have seen size value go lower than -1000.
> We have also forced it to fix itself by sending in n+1 messages. Once the 
> size goes above zero, the cached value is refreshed and things work ok again.
> Unfortunately, during low volume times, it could be hours before n+1 messages 
> are received, so our message latency can rise during low volume times.... :(
> I have attached our broker config.

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