ActiveMQ引发不匹配的确认异常

Question

WARN | Async error occurred: javax.jms.JMSException: Unmatched acknowledge: MessageAck {commandId = 30, responseRequired = false, ackType = 2, consumerId = ID:PC02-DT-009-52405-1421153309991-1:3:10:1, firstMessageId = ID:PC02-DT-009-52360-1421152976467-1:4:11:1:1, lastMessageId = ID:PC02-DT-009-52360-1421152976467-1:4:11:1:1, destination = queue://DATA.DESTINATION, transactionId = null, messageCount = 1, poisonCause = null}; Could not find Message-ID ID:PC02-DT-009-52360-1421152976467-1:4:11:1:1 in dispatched-list (start of ack)
javax.jms.JMSException: Unmatched acknowledge: MessageAck {commandId = 30, responseRequired = false, ackType = 2, consumerId = ID:PC02-DT-009-52405-1421153309991-1:3:10:1, firstMessageId = ID:PC02-DT-009-52360-1421152976467-1:4:11:1:1, lastMessageId = ID:PC02-DT-009-52360-1421152976467-1:4:11:1:1, destination = queue://DATA.DESTINATION, transactionId = null, messageCount = 1, poisonCause = null}; Could not find Message-ID ID:PC02-DT-009-52360-1421152976467-1:4:11:1:1 in dispatched-list (start of ack)
    at org.apache.activemq.broker.region.PrefetchSubscription.assertAckMatchesDispatched(PrefetchSubscription.java:482)
    at org.apache.activemq.broker.region.PrefetchSubscription.acknowledge(PrefetchSubscription.java:214)
    at org.apache.activemq.broker.region.AbstractRegion.acknowledge(AbstractRegion.java:426)
    at org.apache.activemq.broker.region.RegionBroker.acknowledge(RegionBroker.java:408)
    at org.apache.activemq.broker.BrokerFilter.acknowledge(BrokerFilter.java:77)
    at org.apache.activemq.broker.BrokerFilter.acknowledge(BrokerFilter.java:77)
    at org.apache.activemq.broker.TransactionBroker.acknowledge(TransactionBroker.java:287)
    at org.apache.activemq.broker.MutableBrokerFilter.acknowledge(MutableBrokerFilter.java:87)
    at org.apache.activemq.broker.TransportConnection.processMessageAck(TransportConnection.java:508)
    at org.apache.activemq.command.MessageAck.visit(MessageAck.java:236)
    at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:329)
    at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:184)
    at org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
    at org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:113)
    at org.apache.activemq.transport.AbstractInactivityMonitor.onCommand(AbstractInactivityMonitor.java:288)
    atorg.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
    at org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:214)
    at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:196)

这是我在activeMQ日志中得到的异常。场景：我有10个消费者，我在消费者正在监听的目标队列中有100条消息。消费者正在获取大约10-20条消息的消息，但最终停止从队列中获取消息，但有上述异常。我的理解是，只有在返回确认时（如果我是对的），消费者才会得到一条新消息... JMS容器：

<代码>

非常感谢您的帮助，谢谢！

Answer 1

好吧，让我感谢自己回答这个问题。显然，消费者在通过httpclient连接到DB时遇到了一些异常，这会杀死所有消费者线程。无论如何，任何人在没有任何例外的情况下都可以尝试通过1解决这个问题。增加activeMQ配置“conf/activeMQ.xml”2中的内存限制。尝试将确认方法更改为“Transact”或消息本身消息中的确认。确认（）；