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https://issues.apache.org/jira/browse/AMQ-2056?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dejan Bosanac updated AMQ-2056:
-------------------------------

    Fix Version/s:     (was: 5.4.2)
                   5.5.0

> Jencks container sometimes hangs when maxMessagesPerSessions is < maxSessions
> -----------------------------------------------------------------------------
>
>                 Key: AMQ-2056
>                 URL: https://issues.apache.org/jira/browse/AMQ-2056
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: JCA Container
>         Environment: Mac OX/X
>            Reporter: Adrian Trenaman
>             Fix For: 5.5.0
>
>         Attachments: jencks-blocking-consumers.tar
>
>
> I've found that if I configure Jencks with a low maxMessagesPerSessions (e.g. 
> 3) and a higher maxSessions (e.g. 8) then my consumers hang after about 30 
> messages and no more messages get consumed.
> Any idea why this might be? I find that if I make the maxMessagesPerSessions 
> (which AFAIK matches the queue prefetch value) higher then it seems to work. 
> I'm happy to do this, but I'm puzzled as to why this occurs.
> Any help gratefully accepted - sample Spring config below. Also, I've 
> attached sample code to this issue. Run the RequestHandler server from within 
> Eclipse against a standalone broker, and then just use the ActiveMQ Web 
> Console to sent 1000 messages to the queue RA.request
> /Ade
>     <bean id="listenerJcaConnector" class="org.jencks.JCAConnector">
>         <property name="jcaContainer" ref="jencksContainer"/>
>         <property name="transactionManager" ref="transactionManager"/>
>         <property name="activationSpec">
>                     <bean 
> class="org.apache.activemq.ra.ActiveMQActivationSpec">
>                                 <property name="destination" 
> value="RA.REQUEST"/>
>                                 <property name="destinationType" 
> value="javax.jms.Queue"/>
>   <property name="maxSessions" value="8"/>
>                                 <property name="maxMessagesPerSessions" 
> value="3"/> <!-- effectively, this just matches the prefetch size -->
>                     </bean>
>         </property>
>         <property name="ref" value="messageListener"/>
>     </bean> 

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