Convert listeners to work with async interceptor stack ------------------------------------------------------ Key: ISPN-9614 URL: https://issues.jboss.org/browse/ISPN-9614 Project: Infinispan Issue Type: Enhancement Components: Listeners Reporter: William Burns Assignee: William Burns Priority: Major Fix For: 10.0.0.Final Currently a sync listener will block the thread that is notifying it. It should return a _CompletableFuture_ to integrate properly with the async stack to be notified upon completion. Also we should not invoke "alien" listeners on the same thread as they could block. We should allow listener to make itself async in some manner (ie. return type is CompletableFuture<Void>).