anchor.diff:      %% done
       ok.
   
  +test_node_data_persistent(_Config) ->
  +    Index = index,
  +    Lang = "en",
  +    Node = random(test_nodes()),
  +    ok = rpc:call(Node, doko_cluster, add_index, [Index, Lang]),
  +    Pid = rpc:call(Node, erlang, whereis, [doko_node]),
  +    true = rpc:call(Node, erlang, exit, [Pid,kill]),
  +    Lang = rpc:call(Node, doko_cluster, index_lang, [Index]),
  +    ok.
  +
   %%----------------------------------------------------------------------------
   %% CT functions
   %%----------------------------------------------------------------------------
  
positive.code: -include_lib("common_test/include/ct.hrl").
  
  %% Tests
  -export([test_del_doc/1,test_del_index/1,test_queries/1,test_redundancy/1,
           test_replication/1]).
  
  %% CT functions
  
negative.code:     [{group,systest}].
  
  groups() ->
      [{systest,[shuffle,sequence,{repeat,8}],[test_del_doc,
                                               test_del_index,
                                               test_queries,
                                               test_redundancy,
                                               test_replication]}].
  
  init_per_suite(Config) ->
      Nodes = test_nodes(),
  