EAP 7.1 CP3 infinispan memory leak

Issue

• While migrating from EAP 6.4 to EAP 71 CP3 a memory leak on infinispan EJB cache has been detected.
• One of the differences between EAP 6.4 and 7.1 concerns EJB passivation: file-passivation-store is replaced by an infinispan passivation-store.
• We can see EJBs are removed from memory once the session times out. However the infinispan EJB cache keeps growing while it should be flat.
• Upon disabling EJB passivation, we observe no more leak, so we suspect there is a leak in infinispan with respect to the EJB passivation feature.