anchor.diff:  do_couchbase_index_stats_descriptions(BucketId, AddIndex) ->
       Nodes = case AddIndex of
                   all ->
  -                    bucket_nodes("@index-" ++ BucketId);
  +                    section_nodes("@index-" ++ BucketId);
                   XNodes ->
                       XNodes
               end,
  
positive.code:       end, ListOfLists),
      [hd(ets:lookup(ETS, T)) || #stat_entry{timestamp = T} <- MainSamples].
  
  bucket_nodes("@system") ->
      ns_cluster_membership:actual_active_nodes();
  bucket_nodes("@query") ->
      ns_cluster_membership:n1ql_active_nodes(ns_config:latest_config_marker());
  bucket_nodes("@index-"++_) ->
      ns_cluster_membership:index_active_nodes(ns_config:latest_config_marker());
  bucket_nodes("@goxdcr-"++Bucket) ->
      ns_bucket:live_bucket_nodes(Bucket);
  bucket_nodes(Bucket) ->
      ns_bucket:live_bucket_nodes(Bucket).
  
  is_persistent("@query") ->
  
negative.code: get_indexes(BucketId) ->
      simple_memoize({indexes, BucketId},
                     fun () ->
                             Nodes = section_nodes("@index-" ++ BucketId),
                             do_get_indexes(BucketId, Nodes)
                     end, 5000).
  
  