Error when running two requests to same view simultaneously

[John Bartak]

I've setup some tests that generate multiple identical requests to the same 
view at the same time.  One of the requests for a view occasionally fails while 
the other one succeeds.

The get request the gets sent to the server is:
[info] [<0.16662.0>] 192.168.200.1 - - 'GET' 
/fileinttests_20090109_163919_286_1161293461/_view/MultiFieldQuery_type_OwnerId_Name/view?key=%5b%22repository.repositoryfile%22%2c%22ownerid%22%2c%22filename%22%5d&include_docs=true
 200

The view code is very simple:
function(doc){
  if (doc.type && doc.OwnerId && doc.Name) {
      emit([(doc.type.toLowerCase) ? doc.type.toLowerCase(): 
doc.type,(doc.OwnerId.toLowerCase) ? doc.OwnerId.toLowerCase(): 
doc.OwnerId,(doc.Name.toLowerCase) ? doc.Name.toLowerCase(): doc.Name],null);
   }
}

I'm wondering if I'm doing something wrong or if this is expected behavior or 
if there is a bug in CouchDB?

This is with CouchDB version: 0.9.0a712213

 I get the following error:

[error] [<0.17007.0>] {error_report,
    <0.22.0>,
    {<0.17007.0>,
     crash_report,
     [[{pid,<0.17007.0>},
       {registered_name,[]},
       {error_info,
           {function_clause,
               [{couch_doc,to_json_obj,[{not_found,missing},[]]},
                {couch_httpd_view,view_row_obj,3},
                {couch_httpd_view,'-make_view_fold_fun/5-fun-2-',9},
                {couch_view,fold_fun,4},
                {couch_btree,stream_kv_node2,7},
                {couch_btree,fold,5},
                {couch_view,fold,5},
                {couch_httpd_view,output_map_view,5}]}},
       {initial_call,
           {mochiweb_socket_server,
               acceptor_loop,
               [{<0.57.0>,#Port<0.128>,#Fun<mochiweb_http.1.62821608>}]}},
       {ancestors,[couch_httpd,<0.52.0>,couch_server_sup,<0.1.0>]},
       {messages,[]},
       {links,[#Port<0.4336>,<0.57.0>,#Port<0.4331>]},
       {dictionary,
           [{mochiweb_request_qs,
                [{"key",
                  
"[\"autodesk.social.services.files.repository.repositoryfile\",\"ownerid\",\"filename\"]"},
                 {"include_docs","true"}]},
            {couch_drv_port,#Port<0.4336>}]},
       {trap_exit,false},
       {status,running},
       {heap_size,4181},
       {stack_size,21},
       {reductions,366135}],
      []]}}
[error] [<0.57.0>] {error_report,
    <0.22.0>,
    {<0.57.0>,
     std_error,
     {mochiweb_socket_server,
         235,
         {child_error,
             {function_clause,
                 [{couch_doc,to_json_obj,[{not_found,missing},[]]},
                  {couch_httpd_view,view_row_obj,3},
                  {couch_httpd_view,'-make_view_fold_fun/5-fun-2-',9},
                  {couch_view,fold_fun,4},
                  {couch_btree,stream_kv_node2,7},
                  {couch_btree,fold,5},
                  {couch_view,fold,5},
                  {couch_httpd_view,output_map_view,5}]}}}}}

=ERROR REPORT==== 9-Jan-2009::16:39:23 ===
{mochiweb_socket_server,
    235,
    {child_error,
        {function_clause,
            [{couch_doc,to_json_obj,[{not_found,missing},[]]},
             {couch_httpd_view,view_row_obj,3},
             {couch_httpd_view,'-make_view_fold_fun/5-fun-2-',9},
             {couch_view,fold_fun,4},
             {couch_btree,stream_kv_node2,7},
             {couch_btree,fold,5},
             {couch_view,fold,5},
             {couch_httpd_view,output_map_view,5}]}}}