Javadoc
Validates each mutation and prepares a batch for write. If necessary (non-replay case), runs
CP prePut()/ preDelete() hooks for all mutations in a batch. This is intended to operate on
entire batch and will be called from outside of class to check and prepare batch. This can
be implemented by calling helper method
#checkAndPrepareMutation(int,long) in a
'for' loop over mutations.