anchor.diff:          prepared_dict = orddict:new(),
   
           pvc_atomic_state = PVCTable,
  -        pvc_key_hit_miss_default = 0,
  +        pvc_key_miss_default_version = 0,
           pvc_commitqueue = CommitQueue,
           pvc_pending_keys = PendingKeys
       }}.
  
positive.code:     pvc_commitqueue = CommitQueue,
      pvc_pending_keys = PendingKeys,
      pvc_atomic_state = PartitionState,
      pvc_key_hit_miss_default = DefaultLastVersion,
      committed_tx = VLogLastCache
  }) ->
  
  
negative.code:     prepared_dict :: orddict:orddict(),
  
      pvc_atomic_state :: cache_id(),
      %% The default VLog.last(key).vid[partition],
      %% useful for emulating database load.
      %% Tells the client what is the most recent version of a key.
      pvc_key_miss_default_version :: non_neg_integer(),
      pvc_commitqueue :: pvc_commit_queue:cqueue(),
      %% A set populated with all the keys currently present in the commit queue
      %% mapping key() => tx_id(), Cleaned on marking a transaction as aborted,
      %% or when it gets dequeued.
      pvc_pending_keys :: cache_id(),
  
      %% Timer reference for periodic dequeue
  