wait between retries when MDB fails?

amyrlinseat Aug 22, 2005 3:50 AM

Hi all

When MDB fails, the message is re-entered to the queue and another instance of the MDB will eventually take it out and process it again. The number of retries is 10 by default and can be configured by editing the MaxTimesRedelivered node in the jboss.xml file.

My question is: is there a way to configure that JBoss will wait a few seconds before retrying?

The reason is: returning the message to the queue usually causes it to be processed immediately (unless there are many other messages in the queue), and errors that are assumed to be momentary (like a database connection problem) have a higher probability to disappear if I wait a few seconds (or minutes).

TIA
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1. Re: wait between retries when MDB fails?

genman Aug 22, 2005 3:32 PM (in response to amyrlinseat)

Take a look at the attributes of a Queue in the JMX console.
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2. Re: wait between retries when MDB fails?

amyrlinseat Aug 23, 2005 2:42 AM (in response to amyrlinseat)
Thanks genman, I assume you mean the "RedeliveryDelay" attribute, and thus my queue definition will be somewhat like this:

<mbean code="org.jboss.mq.server.jmx.Queue" name="jboss.mq.destination:service=Queue,name=Activities2"> <depends optional-attribute-name="DestinationManager">jboss.mq:service=DestinationManager</depends> <depends optional-attribute-name="SecurityManager">jboss.mq:service=SecurityManager</depends> <attribute name="RedeliveryDelay">20000</attribute> <attribute name="RedeliveryLimit">3</attribute> </mbean>

Please correct me if I am wrong so others won't use this and err.

Other useful links I found are:
http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3887698#3887698
http://www.jboss.org/wiki/Wiki.jsp?page=ConfigTopic

Thanks again for the quick reply.
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3. Re: wait between retries when MDB fails?

genman Aug 24, 2005 12:49 AM (in response to amyrlinseat)

You're right. But you should always verify yourself by testing.
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