[jboss-user] [EJB/JBoss] - Help configure MDB threads
Under JBoss 4.0 and earlier versions I had an MDB with the following jboss.xml deployment
descriptor:
| <jboss>
| <enterprise-beans>
| <message-driven>
| <ejb-name>LoggingMDB</ejb-name>
| <destination-jndi-name>queue/loggingQueue</destination-jndi-name>
| <configuration-name>LoggingMDB Message Driven
Bean</configuration-name>
| </message-driven>
| </enterprise-beans>
| <container-configurations>
| <container-configuration extends="Standard Message Driven Bean">
| <container-name>LoggingMDB Message Driven Bean</container-name>
| <container-pool-conf>
| <MinimumSize>1</MinimumSize>
| <MaximumSize>100</MaximumSize>
| <strictMaximumSize>false</strictMaximumSize>
| </container-pool-conf>
| <depends>xo.services:service=ConfigurationManager</depends>
| </container-configuration>
| </container-configurations>
| </jboss>
|
It worked, the MDB would scale up to 100 threads.
However now we've upgraded our servers to JBoss 4.2.3, and the MDB seems to be limited
to 15 threads.
As a first step in fixing this, I updated the MDB code/packaging to EJB3 with annotation
such as:
| @MessageDriven
| (activationConfig={
| @ActivationConfigProperty(propertyName="destinationType",
| propertyValue="javax.jms.Queue"),
| @ActivationConfigProperty(propertyName="destination",
| propertyValue="queue/loggingQueue"),
| @ActivationConfigProperty(propertyName = "maxSession",
| propertyValue = "100")})
|
However it still seems to be limited to 15 threads.
Reviewing random bits of unorganized wiki documentation I found the answer may be in
deploy/ejb3-interceptors-aop.xml:
| <domain name="Message Driven Bean">
| ...
| <annotation expr="!class((a)org.jboss.annotation.ejb.PoolClass)">
| @org.jboss.annotation.ejb.PoolClass
(value=org.jboss.ejb3.StrictMaxPool.class, maxSize=15, timeout=10000)
| </annotation>
| </domain>
|
Could somebody please explain to me whether it's possible to:
| * Configure these annotations in a separate file, preferably bundled in the EJB
jar/ear?
|
| * Affect the pool size of this particular MDB, rather than the default which would
affect other MDBs?
|
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