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Date: Wed, 27 Jun 2012 10:55:06 +0100
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 <CAH+vQmOwt1EPfnpW4LY3PpVPq5HeTqT9tv+rA8=zJMU4f00eqw@mail.gmail.com>
Subject: Re: question about ActiveMQ, jdbcPersistenceAdapter and MasterSlave
From: Gary Tully <gary.tully@gmail.com>
To: users@activemq.apache.org
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On 1) the broker schedular maintains its own file based store, and
sends the messages when they are due.

On 2) Have a read of
https://issues.apache.org/jira/browse/AMQ-3654?focusedCommentId=3D13294679&=
page=3Dcom.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#com=
ment-13294679


On 27 June 2012 04:56, Mohan Nade <mohannade@gmail.com> wrote:
> We are using activemq in jdbc master slave configuration. extract pasted
> below -
>
> =A0 =A0 <persistenceAdapter>
> =A0 =A0 =A0<jdbcPersistenceAdapter dataSource=3D"#mysql-ds" useDatabaseLo=
ck=3D"true"
> />
> =A0 =A0 </persistenceAdapter>
>
>
> The messages are posted to queues and consumers are registered to these
> queues.
>
> =A0 =A0 =A0 =A0 =A0 =A0MessageProducer producer =3D session.createProduce=
r(destination);
> =A0 =A0 =A0 =A0 =A0 =A0producer.setDeliveryMode(DeliveryMode.PERSISTENT);
>
> The producer's delivery mode is set to persistent as pasted below.
> Some messages are expected to be delivered with delay to be able to execu=
te
> them at specified time.
>
> The questions
> 1. the messages are not appearing in ACTIVEMQ_MSGS till they are close to
> the execution time. Should the messages not appear when the are "sent"?
>
> 2. Since we are looking for master slave using jdbc, the '
> useDatabaseLock=3D"true"' is set but even with a minute fluctuation in th=
e db
> connection, the master fails and the control is handed over to slave.
> We have tried 'lockKeepAlivePeriod=3D"0" lockAcquireSleepInterval=3D"3000=
00"'
> Is there a way to let the master wait for a defined time and then only fa=
il?
>
> regards,
> Mohan
>
>
>
>
>
> --
> View this message in context: http://activemq.2283324.n4.nabble.com/quest=
ion-about-ActiveMQ-jdbcPersistenceAdapter-and-MasterSlave-tp4653602.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.


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