Drools 6.3.0 DefaultFactHandle NotSerializable exception

[kumar shorav]

Hi All,

We are running drools 6.3.0 on Weblogic 12.1.2 as a stateless EJB 3.0 Bean. The bean returns the following exception when there is more load on the server during the initialization process when it is creating new instances in the pool.

Exception:

EJB Exception: : java.lang.RuntimeException:         java.io.NotSerializableException: org.drools.core.common.DefaultFactHandle
    at org.drools.core.util.ClassUtils.deepClone(ClassUtils.java:514)
    at     org.drools.core.definitions.impl.KnowledgePackageImpl.deepCloneIfAlreadyInUse(Kn    owledgePackageImpl.java:770)
    at     org.drools.core.definitions.impl.KnowledgePackageImpl.deepCloneIfAlreadyInUse(KnowledgePackageImpl.java:66)
at org.drools.core.impl.KnowledgeBaseImpl.addPackages(KnowledgeBaseImpl.java:722)
at org.drools.core.impl.KnowledgeBaseImpl.addKnowledgePackages(KnowledgeBaseImpl.java:266)
at org.drools.compiler.kie.builder.impl.KieContainerImpl.createKieBase(KieContainerImpl.java:412)
at org.drools.compiler.kie.builder.impl.KieContainerImpl.getKieBase(KieContainerImpl.java:346)
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:498)
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:443)
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:425)

The code we have to initialize a new stateful session is as below:

protected KieSession kieSession= null;
protected ReleaseId releaseId = null; //fetched by logic to identify the release id>
if(kieSession != null){
    kieSession.dispose();
    kieSession = null;
}
KieServices kServices = KieServices.Factory.get();
KieContainer container = kServices.newKieContainer(this.releaseId);
kieSession = container.newKieSession();

This is happening in the constructor of the Stateless Bean.

Could you help us with any suggestions on resolving this issue?

The same exception is also coming out in the Drools Version 6.1.0

Thanks

Shorav

[Thibault Daoulas]

Hi Kumar,

Did you manage to solve your issue?

[Mark Proctor]

Can you test this against 6.4?

Mark

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