EJB 3 clustering error

[mahanare]

Hello,

I am trying to create  clustered EJBs in a clustered jboss environment based on a load balancing requirement in our project.

with some references on internet

I tried

@Clustered

and also

@Clustered(loadBalancePolicy = org.jboss.ha.framework.interfaces.RoundRobin.class)

annotations in my SLSB EJB 3.0 bean class.

But I am getting

java.lang.annotation.AnnotationFormatError: Invalid default: public abstract java.lang.Class org.jboss.annotation.ejb.Clustered.loadBalancePolicy()

at java.lang.reflect.Method.getDefaultValue(Method.java:726)

at sun.reflect.annotation.AnnotationType.<init>(AnnotationType.java:99)

.......

Am i missing anything, please suggest if i need to do something else. any references will help.

thanks in advance, harinath

[dandare100]

Hello Harinath

Are you starting the JBOSS server with a "clustered" configuration? ie the "all" configuration ?

What version of JBOSS are you using ?

Have you tried @Clustered(loadBalancePolicy="RoundRobin") ? (Note the quotes and String type instead of class)

Mark

[mahanare]

Hi Mark,

Jboss version is 4.2.3.

Jboss cluster: Actually Jboss is more customized in our product and i think yes. but not sure if i am missing any configuration. we actually have custom configuration for the product (instead of "all").

yes, I tried. (giving string value is throwing compilation error).

@Clustered(loadBalancePolicy = RoundRobin.class)

any suggestions to explore more on this?

Thanks for responding to my query.

-Harinath

[jbossq]

when a @Clustered EJB deployed in a non clustered profile, this error occurs. you can try it in the all profile, if it works, you need to customize the all profile from scratch.

[dandare100]

+1.

I had that error before and that was the cause.

[jaikiran]

jboss q wrote:

when a @Clustered EJB deployed in a non clustered profile, this error occurs.

Is that the case with AS-5.x and later too? I would have expected it to ignore that annotation if the profile doesn't support clustering.

[mahanare]

Yes, after adding the jboss cluster service xml into deploy folder and adding jbossha.jar to lib folder, this error has disappeared.

[mahanare]

And now the client complains with the "Caught: java.lang.RuntimeException: cluster invocation failed" error.

D:\projects\groovy>groovy hello.groovy

Caught: java.lang.RuntimeException: cluster invocation failed, last exception was:

        at hello.run(hello.groovy:68)

Any thoughts?

[mahanare]

My bad, server bind address was 0.0.0.0. that caused that error.

Its working finally. I see load being balanced to multiple servers in round robin fashion.

Thanks, Harinath