1141     const Slice *lower_bound, *upper_bound;  in FinishCompactionOutputFile()  local
1168         upper_bound = sub_compact->end;  in FinishCompactionOutputFile()
1170         upper_bound = &upper_bound_guard;  in FinishCompactionOutputFile()
1175       upper_bound = sub_compact->end;  in FinishCompactionOutputFile()
1182     if (upper_bound != nullptr && meta->largest.size() > 0) {  in FinishCompactionOutputFile()
1184           ucmp->Compare(meta->largest.user_key(), *upper_bound) == 0;  in FinishCompactionOutputFile()
1194            upper_bound == nullptr ||  in FinishCompactionOutputFile()
1195            ucmp->Compare(*upper_bound , *sub_compact->end) <= 0);  in FinishCompactionOutputFile()
1196     auto it = range_del_agg->NewIterator(lower_bound, upper_bound,  in FinishCompactionOutputFile()
1208       if (upper_bound != nullptr) {  in FinishCompactionOutputFile()
1209         int cmp = ucmp->Compare(*upper_bound, tombstone.start_key_);  in FinishCompactionOutputFile()
1261       if (upper_bound != nullptr &&  in FinishCompactionOutputFile()
1262           ucmp->Compare(*upper_bound, largest_candidate.user_key()) <= 0) {  in FinishCompactionOutputFile()
1278             InternalKey(*upper_bound, kMaxSequenceNumber, kTypeRangeDeletion);  in FinishCompactionOutputFile()