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Date: Fri, 13 May 2016 13:07:51 +0100
Message-ID: <CAFitrpQM4XO-Or822eVVCtBZtDNEM9hKSO-goqxruSksVc9EuQ@mail.gmail.com>
Subject: Re: sync_ack option in AMQP 0-10 JMS client
From: Robbie Gemmell <robbie.gemmell@gmail.com>
To: "users@qpid.apache.org" <users@qpid.apache.org>, Keith W <keith.wall@gmail.com>
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archived-at: Fri, 13 May 2016 12:07:57 -0000

Taking a peek, the option only ever affected auto-ack behaviour since
it was added several years ago, letting you configure the 0-10
consumers to sync after each message ack. It doesnt affect the sync
behaviour for client-ack consumers, as Jakub notes.

On the docs, the easiest (if ugly) thing to do for now would probably
be to just copy the 'programming' book into the java tree, drop all
the non-JMS bits, move the 'addresses' section to the end, and leave
it otherwise as-is, with the 0-10 and 0-8..0-91 books still seperate.
That would allow updating it if needed and avoid confusion of where it
is in the immediate term, and any larger changes/consolidation can
then be done later as desired/time allows.

Robbie

On 13 May 2016 at 12:32, Keith W <keith.wall@gmail.com> wrote:
> Jakub,
>
> The parameter is still supported.
>
> The Java section of the Programming in Apache Qpid docbook has rather
> been orphaned by code re-structurings,   It really ought to move into
> the Java components tree and ideally incorporated with the 0-8..0-91
> docbook.  Unfortunately this it not as easy at it ought to be as there
> are significant behavioural differences when the legacy client is used
> with 0-10 vs. the older protocols.  It is on my todo list, but keeps
> getting bumped.
>
> HTH
>
>
> On 12 May 2016 at 21:49, Jakub Scholz <jakub@scholz.cz> wrote:
>> There used to be a connection URL parameter "sync_ack" which could have
>> been used to define whether acknowledgments should be sent synchronously or
>> asynchronously. Is this parameter still supported?
>>
>> It seems to me that whatever value I give to it, it always syncs after
>> every acknowledgements. From digging through the code it seems to me that
>> it is reflected only when I use AUTO_ACKNOWLEDGE mode, but not when I
>> acknowledge the messages manually.
>>
>> I also noticed that the "Using the Qpid JMS client (AMQP 0-10)" document on
>> the website (
>> https://qpid.apache.org/releases/qpid-0.32/programming/book/QpidJMS.html)
>> is not updated since 0.32 release. It is missing for the 6.0.x releases -
>> it looks like it disappeared with the independent Java releases. I guess
>> that is probably not intentional.
>>
>> Thanks & Regards
>> Jakub
>
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