Object returned by HttpSession.getAttribute(...) following a previous setAttribute(...), not mutating correctly on non-primary owner using ATTRIBUTE granularity when cache is non-transactional. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Key: WFLY-13238 URL: https://issues.redhat.com/browse/WFLY-13238 Project: WildFly Issue Type: Bug Components: Clustering Affects Versions: 19.0.0.Beta3 Reporter: Paul Ferraro Assignee: Paul Ferraro Priority: Critical Consider the following: {code:java} session.setAttribute("foo", new AtomicInteger(0)); AtomicInteger value = (AtomicInteger) session.getAttribute("foo"); value.incrementAndGet(); {code} When request is receive on a non-primary owner, the above code does not correctly replicate the mutated value when using ATTRIBUTE granularity and the backing cache in non-transactional.