Hi,
I have this needs:
* I receive message M1
* I process M1 and for a particular scenario I can't process this
message right now
* If I send back ackType MODIFIED_FAILED, the message will be
immediately available for another consuming attempt, but I would
like to "delay" it a bit. In this way I can receive other messages
and then, in the next consuming attempt, probably this message M1
can be consumed successfully.
We consume messages from Azure Service Bus queue and asking their
experts how to delay next consuming message attempts, they told us: for
those messages you shouldn't send any acknowledge, just "let them go",
in this way Azure Service Bus keeps them locked until "Duration Lock"
expires. "Duration Lock" is the period of time that the queue waits for
an acknowledge, if it expires, the message is considered lost and it
comes available for another message consuming attempt.
I tried to avoid acknowledge for this kind of messages, but I noticed
this behavior:
* I receive message M1
* I process M1 and for a particular scenario I can't process this
message right now
* I avoid to send acknowledge and so method "onMessage()" finishes
* I receive message M2
* I process M2 successfully
* I call acknowledge with acktype ACCEPTED for M2.
o Qpid library uses ACCEPTED ackType for all messages which are
not yet acknowleged, so it sends ACCEPTED even for M1.
Having this behavior, I must send acknowledge for each message,
otherwise I could send the wrong ackType.
My questions are:
* Is this a bug or a feature this behavior of sending acknowledge even
for all messages not yet acknowledged?
* Is there a best practise to delay a next consuming attempt after a
consuming failed?
Best Regards
--
SMC Consulting <http://www.smcconsulting.it>
facebook <http://www.facebook.com/SMC-Consulting-Srl-597548223675024/>
linkeding <http://www.linkedin.com/company/smc-consulting-srl>
*Alessandro Crotti*
Senior Developer
tel: +39 342 573 4450
skype: crotti.alessandro
*SMC Consulting* <http://www.smcconsulting.it>
Via dell'industria, 87 41012 Carpi (MO) - Italy
tel: +39 059 664875
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