[infinispan-dev] Relaxing clear semantics

Hi guys, I'm going to start working on the new relaxed clear semantic (in the context of ISPN-4140). It affects, at least, the following JIRA: ISPN-4073: clear() can create inconsistencies ISPN-3656: Relax Cache.clear() semantics ISPN-4778: PessimisticLockingInterceptor throws when handling remote clear command ISPN-4140: Clear command doesn't acquire any remote locks in pessimistic mode ISPN-2849: Don't keep threads blocked when waiting for locks to be released In short, the semantic would be: "it clears the cache. If any concurrent operation is in progress, the result is undetermined". So, if concurrent operation can put the cache in inconsistent state. But in other hand, I don't see any case in which a clear is needed during production... In transactional cache, the clear will not affect the transaction. Also, it will not acquire any locks in LockManager. Why? First, we assume that no other operation is in progress, second, if the first assumption is wrong, it can cause deadlocks with it, and third, it would avoid creating a global lock. Any other concerns? Cheers, Pedro