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From riteshtijoriwala <riteshtijoriw...@yahoo.com>
Subject Re: How to preserve order of messages in Network of Brokers?
Date Tue, 05 May 2009 21:23:02 GMT

Thanks Bruce.


bsnyder wrote:
> 
> On Sun, May 3, 2009 at 1:30 AM, riteshtijoriwala
> <riteshtijoriwala@yahoo.com> wrote:
>>
>> I have two consumers C1 and C2 and two brokers B1 and B2 that see each
>> other.
>> I have one producer P1.
>>
>> P1 is connected initially to B1 and C2 is connected to B1. C1 is
>> connected
>> to B2. The initial start is as follows:
>>
>> P1 produces 1, 2, 3, 4, 5, 6, (B1 failed),  7, 8, 9, 10.
>> C1 gets 1, 3, 5, 7, 9, 8
>> C2 gets 2, 4, 6, (B1 failed), 10
>>
>> As seen above, I fail B1. P1 and C2 failover to B2. But now the strange
>> things happen. C1 starts to get messages out of order. Is there a way to
>> prevent this? How can I ensure that in case of broker failure, after
>> failover has occurred, consumers will receive messages in order.
>>
>> To be specific, how can I assure that msg # 8 is processed before message
>> #
>> 9 & 10?
> 
> There is currently no way on the broker side to preserve message order
> with multiple brokers.
> 
> Bruce
> -- 
> perl -e 'print
> unpack("u30","D0G)U8V4\@4VYY9&5R\"F)R=6-E+G-N>61E<D\!G;6%I;\"YC;VT*"
> );'
> 
> ActiveMQ in Action: http://bit.ly/2je6cQ
> Blog: http://bruceblog.org/
> Twitter: http://twitter.com/brucesnyder
> 
> 

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