anchor.diff:      end.
   
   map_view(DbName, DDoc, ViewName, QueryArgs) ->
  -    erlang:put(io_priority, {interactive, DbName}),
       {ok, Db} = couch_db:open(DbName, []),
       #view_query_args{
           limit = Limit,
  
positive.code:         skip = Skip,
          include_docs = IncludeDocs,
          direction = Dir,
          inclusive_end = Inclusive
      } = QueryArgs,
      {ok, Total} = couch_db:get_doc_count(Db),
      Acc0 = #view_acc{
          db = Db,
  
negative.code:         limit = Limit,
          skip = Skip,
          keys = Keys,
          stale = Stale,
          extra = Options
      } = QueryArgs,
      set_io_priority(DbName, Options),
      GroupFun = group_rows_fun(GroupLevel),
      MinSeq = if Stale == ok -> 0; true -> couch_db:get_update_seq(Db) end,
      {ok, Pid} = gen_server:call(couch_view, {get_group_server, DbName, Group0}),
  