The call to the apply method can create a new combiner each time. If it does, this method returns false. The same combiner factory may be used each time (typically, this is the case for concurrent collections, which are thread safe). If so, the method returns true.
The call to the apply method can create a new combiner each time. If it does, this method returns false. The same combiner factory may be used each time (typically, this is the case for concurrent collections, which are thread safe). If so, the method returns true.