anchor.diff:                                               || KV <- FullKVList])
                  end,
              ItemCountNI_p1 = ChunkSize + AddToChunkSize,
  -           ?ALG_DEBUG("CheckSH ~Bckv vs. ~Bcmp items, ~B dupes",
  -                      [ItemCountNI_p1, MyDBSize1, length(Dupes0)]),
  +           ?ALG_DEBUG("CheckSH ~B+~Bckv vs. ~B+~Bcmp items",
  +                      [ChunkSize, AddToChunkSize, MyDBSize1, length(Dupes0)]),
              {NewKVList, OtherDBChunk1} =
                  shash_get_full_diff(FullKVList1, SHTree,
                                      [element(2, D) || D <- Dupes0], SigSize),
  
positive.code:                get_diff_with_dupes(FullKVList, CKVTree, [], [], SigSize, VSize,
                                     fun get_full_diff/4),
             ItemCountNI_p1 = ChunkSize + AddToChunkSize,
             ?ALG_DEBUG("CheckCKV ~Bckv vs. ~Bcmp items, ~B dupes",
                        [ItemCountNI_p1, MyDBSize1, length(_Dupes)]),
             ?DBG_ASSERT2(length(ToSend) =:= length(lists:usort(ToSend)),
                          {non_unique_send_list, ToSend, _Dupes}),
             % note: the actual acc(phase1) may be different from what the non-initiator expected
  
negative.code:     {ToSendKeys1, ToReqIdx1, DBChunkTree1, _Dupes} =
          get_diff_with_dupes(KVList, DBChunkTree, [], [], SigSize, VSize,
                              GetDiffFun),
      ?ALG_DEBUG("CheckCKV ~B+~Bckv vs. ~B+~Bcmp items",
                 [mymaps:size(DBChunkTree), DupesCount,
                  length(KVList), length(_Dupes)]),
  
  