Hi Gary,
I am sorry that I could not pinpoint the exact reason about this issue.
I was wondering that it may be caused by using "kill -9" to terminate the
client program which
sends or receives message. By the way, this issue seems to occur when the
client program try to
reconnect to the broker.
Gary Tully wrote:
>
> Destination is null for some reason. There seems to be a "not null"
> guard on every other use of destination save this one.
>
> Can you raise a jira issue and supply as much info as you can about
> the context of this exception?
>
> The simple fix is to add the null check here also, but it is not clear
> from the code why destination would be null as dispatch would have to
> have been called prior to an acknowledgement.
> The not null checks elsewhere would indicate that it is necessary however.
>
> 2008/12/11 WhiteSock <whitesock1...@hotmail.com>:
>>
>> Hi all,
>>
>> I got the following error in activemq.log, ActiveMQ's version is
>> 5.2.0.
>> Do you have any idea?
>>
>> 2008-12-10 21:44:04,485 [.15.2.125:47814] ERROR Service
>> - Async error occurred: java.lang.NullPointerException
>> java.lang.NullPointerException
>> at
>> org.apache.activemq.broker.region.TopicSubscription.acknowledge(TopicSubscription.java:221)
>> 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)
>> 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:619)
>>
>> Cheers.
>> --
>> View this message in context:
>> http://www.nabble.com/Async-error-occurred-java.lang.NullPointerException-tp20950854p20950854.html
>> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>>
>>
>
>
>
> --
> http://blog.garytully.com
>
> Open Source SOA
> http://FUSESource.com
>
>
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