Support fine-grained write skew check for FineGrainedAtomicMap entries ---------------------------------------------------------------------- Key: ISPN-5584 URL: https://issues.jboss.org/browse/ISPN-5584 Project: Infinispan Issue Type: Feature Request Components: Core Affects Versions: 8.0.0.Alpha2, 7.2.3.Final Reporter: Dan Berindei Fix For: 9.1.0.Final FineGrainedAtomicMap doesn't currently work with write skew check enabled. I was able to make it work by adding a special case for DeltaAwareCacheEntry in WriteSkewHelper, however the map has a single version, so the write skew check fails if any of the sub-keys were modified in parallel. With pessimistic locking, fine-grained maps allow the user to modify different sub-keys concurrently, we should allow the same with optimistic locking.