same SLSB in multiple clusters

[ablevine1]

If I have an EJB3 SLSB and I want it to be in multiple clusters, how do I achieve this. The @Clustered annotation seems to tie it to only one cluster, as the partition name parameter refers to only one partition. Is there some way I can deploy the same Session Bean in two clusters??

[ablevine1]

So, I,ve found that this is supposed to be able to be done by using jboss.xml files in the META-INF directory of your ejb jar file, but I can;t seem to get it to work

My session implemetation class looks like this:
@Stateless
@Remote(ProductManagerSession.class)
@Local(ProductManagerSession.class)
public class ProductManagerSessionImpl extends AbstractManagerSession implements ProductManagerSession
{
....
}

with both a remote and local interface:
then my jboss.xml file looks like this for one of the clusters:


<enterprise-beans>
<!-- ProductManagerSessionImpl remote -->

<ejb-name>ProductManagerSessionImpl</ejb-name>
<jndi-name>ProductManagerSessionImpl/remote</jndi-name>
true
<cluster-config>
<partition-name>AppPartition</partition-name>
<load-balance-policy>org.jboss.ha.framework.interfaces.FirstAvailable</load-balance-policy>
</cluster-config>

<!-- ProductManagerSessionImpl local -->

<ejb-name>ProductManagerSessionImpl</ejb-name>
<jndi-name>ProductManagerSessionImpl/local</jndi-name>
true
<cluster-config>
<partition-name>AppPartition</partition-name>
<load-balance-policy>org.jboss.ha.framework.interfaces.FirstAvailable</load-balance-policy>
</cluster-config>

</enterprise-beans>


It is then packaged in an ear file named app.ear
when I try to connect using a remote client using the jndi name app/ProductManagerSessionImpl/remote
I get a NamingException saying "remote not bound"

What am I doing wrong??
Do I also need an ejb-jar.xml file??

Is there something I am missing from jboss.xml??

Any suggestions would be appreciated

[ablevine1]

So, I,ve found that this is supposed to be able to be done by using jboss.xml files in the META-INF directory of your ejb jar file, but I can;t seem to get it to work

My session implemetation class looks like this:
@Stateless
@Remote(ProductManagerSession.class)
@Local(ProductManagerSession.class)
public class ProductManagerSessionImpl extends AbstractManagerSession implements ProductManagerSession
{
....
}

with both a remote and local interface:
then my jboss.xml file looks like this for one of the clusters:


<enterprise-beans>
<!-- ProductManagerSessionImpl remote -->

<ejb-name>ProductManagerSessionImpl</ejb-name>
<jndi-name>ProductManagerSessionImpl/remote</jndi-name>
true
<cluster-config>
<partition-name>AppPartition</partition-name>
<load-balance-policy>org.jboss.ha.framework.interfaces.FirstAvailable</load-balance-policy>
</cluster-config>

<!-- ProductManagerSessionImpl local -->

<ejb-name>ProductManagerSessionImpl</ejb-name>
<jndi-name>ProductManagerSessionImpl/local</jndi-name>
true
<cluster-config>
<partition-name>AppPartition</partition-name>
<load-balance-policy>org.jboss.ha.framework.interfaces.FirstAvailable</load-balance-policy>
</cluster-config>

</enterprise-beans>


It is then packaged in an ear file named app.ear
when I try to connect using a remote client using the jndi name app/ProductManagerSessionImpl/remote
I get a NamingException saying "remote not bound"

What am I doing wrong??
Do I also need an ejb-jar.xml file??

Is there something I am missing from jboss.xml??

Any suggestions would be appreciated

[ablevine1]

REPOSTED DUE TO JUMBLED XML

So, I,ve found that this is supposed to be able to be done by using jboss.xml files in the META-INF directory of your ejb jar file, but I can;t seem to get it to work

My session implemetation class looks like this:
@Stateless
@Remote(ProductManagerSession.class)
@Local(ProductManagerSession.class)
public class ProductManagerSessionImpl extends AbstractManagerSession implements ProductManagerSession
{
....
}

with both a remote and local interface:
then my jboss.xml file looks like this for one of the clusters:

<jboss>
 <enterprise-beans>
 <!-- ProductManagerSessionImpl remote -->
 <session>
 <ejb-name>ProductManagerSessionImpl</ejb-name>
 <jndi-name>ProductManagerSessionImpl/remote</jndi-name>
 <clustered>true</clustered>
 <cluster-config>
 <partition-name>AppPartition</partition-name>
 <load-balance-policy>org.jboss.ha.framework.interfaces.FirstAvailable</load-balance-policy>
 </cluster-config>
 </session>
 <!-- ProductManagerSessionImpl local -->
 <session>
 <ejb-name>ProductManagerSessionImpl</ejb-name>
 <jndi-name>ProductManagerSessionImpl/local</jndi-name>
 <clustered>true</clustered>
 <cluster-config>
 <partition-name>AppPartition</partition-name>
 <load-balance-policy>org.jboss.ha.framework.interfaces.FirstAvailable</load-balance-policy>
 </cluster-config>
 </session>
 </enterprise-beans>
</jboss>

It is then packaged in an ear file named app.ear
when I try to connect using a remote client using the jndi name app/ProductManagerSessionImpl/remote
I get a NamingException saying "remote not bound"

What am I doing wrong??
Do I also need an ejb-jar.xml file??

Is there something I am missing from jboss.xml??

Any suggestions would be appreciated

[ablevine1]

additionally, I would like to add that I am using JBoss-4.0.4GA with the EJB3.0 release that came bundled with it

[ablevine1]

I figured out the correct way to do this file after quite a bit of trial and error:

<jboss>
 <enterprise-beans>
 <!-- ProductManagerSessionImpl just one entry for each session bean and leave out the jndi names-->
 <session>
 <ejb-name>ProductManagerSessionImpl</ejb-name>
 <clustered>true</clustered>
 <cluster-config>
<!-- use notation below instead of actual partition name -->
 <partition-name>${jboss.partition.name}</partition-name>
 <load-balance-policy>org.jboss.ha.framework.interfaces.FirstAvailable</load-balance-policy>
 </cluster-config>
 </session>
 </enterprise-beans>
</jboss>

However now when one of the servers in the partition I get a CannotConnectException until I create a new context and do a new lookup.

[ablevine1]

I meant to say that when one of the servers in the partition is brought down I get a CannotConnectException from the client, so it seems as if the automatic failover in the client stub is not working. could changing the load balancing policy fix this??

[jotis99]

I'm facing the same issue? Can you post the sample XMl snippset for ProductManagerSessionImpl in the the ejb-jar.xml?

[jotis99]

Shouldn't JBoss @Clustered.partiotion automatically pick up the partition name specified in ${jboss.partition.name}? Why is it hard-coded to read DefaultPartition? Developers shouldn't need to add this to jboss.xml. Is this is a bug?

[brian.stansberry]

This is a missing bit of functionality. See http://jira.jboss.com/jira/browse/EJBTHREE-424.

[jotis99]

I'm trying to add a Clustered partition name in the jboss.xml since I cannot hardcode it as an annotation (EJB deploeyed in 2 clusters). I've tried numerous combinations and scoured the forums to no avail. Does JBoss support jboss-specific overrides in jboss.xml? THe following did NOT work for me. Is this a JBoss bug or my bug? Do I need an entry ejb-jar.xml at all if I'm only adding stuff in jboss.xml?

NOTE: this web app is garbling my HTML post for the clustered element!

------------
jboss.xml

<enterprise-beans>

<ejb-name>ClusteredSampleImpl</ejb-name>
&lt;clustered&gt;true &lt;/clustered&gt;
<cluster-config>
<partition-name>ApplicationPartition</partition-name>
&lt;load-balance-policy>org.jboss.ha.framework.interfaces.RandomRobin&lt;/load-balance-policy>
</cluster-config>

</enterprise-beans>


-------------------
<enterprise-beans>

<ejb-name>ClusteredSampleImpl</ejb-name>

</enterprise-beans>

----------------------
where the I have:

@Local
@Remote
public interface ClusteredSample
{
public String ping() ;
public String getSystemProperty(String propertyName) ;
}


@Stateless
public class ClusteredSampleImpl implements ClusteredSample
{
}

[jotis99]

Does this (JIRA EJBTHREE-424) mean that you cannot specify a partition name from jboss.xml too? I've tried lots of permutations to no avail.

The following from jboss.xml doesn't seem to work:
<cluster-config>
<partition-name>ApplicationPartition</partition-name>
<load-balance-policy>org.jboss.ha.framework.interfaces.RandomRobin</load-balance-policy>
</cluster-config>

[jotis99]

Does this (JIRA EJBTHREE-424) mean that you cannot specify a partition name from jboss.xml too? I've tried lots of permutations to no avail.

The following from jboss.xml doesn't seem to work:
<cluster-config>
<partition-name>ApplicationPartition</partition-name>
<load-balance-policy>org.jboss.ha.framework.interfaces.RandomRobin</load-balance-policy>
</cluster-config>

[ablevine1]

apparently not unless you are using EJB3 RC9 or higher

[brian.stansberry]

That is correct. http://jira.jboss.com/jira/browse/EJBTHREE-569