View queries causing errors in couch_set_view_group function

We have a few view query tests failing exceptions such as "AssertionError: Query failed: 27209 Documents Retrieved, expected 49001"

I'm looking into the test code to see if expected number of #docs were eventually retrieved and perhaps we timed out here, but I also see some requests never received any data from query:
http://10.2.2.10:8091/couchBase/default/_design/dev_test_view-1670c92/_view/dev_test_view-1670c92?end_key=99000&decending=true&debug=true&start_key=50000&connection_timeout=60000&full_set=true

returns: error 500 reason: {noproc,{gen_server,call,[<0.30707.0>,

{add,<0.11756.1>},infinity]}} {"error":"{noproc,{gen_server,call,[<0.30707.0>,{add,<0.11756.1>}

,infinity]}}","reason":"{gen_server,call,[<0.24776.0>,

{request_group,ok}

,infinity]}"}

Log ( 10.2.2.10-8091-diag.txt )

[error_logger:error] [2012-02-15 7:24:30] [ns_1@127.0.0.1:error_logger:ale_error_logger_handler:log_report:72]
=========================CRASH REPORT=========================
crasher:
initial call: couch_set_view_group:init/1
pid: <0.24776.0>
registered_name: []
exception exit: {noproc,
{gen_server,call,
[<0.30707.0>,

{add,<0.11756.1>},infinity]}}
in function couch_set_view_group:init/1
ancestors: [<0.24775.0>]
messages: [{'EXIT',<0.24785.0>,normal}]
links: [<0.194.0>,<0.24787.0>]
dictionary: [{random_seed,{17428,2745,11764}}]
trap_exit: true
status: running
heap_size: 46368
stack_size: 24
reductions: 274948
neighbours:

[error_logger:error] [2012-02-15 7:24:30] [ns_1@127.0.0.1:error_logger:ale_error_logger_handler:log_msg:76] ** Generic server <0.24787.0> terminating
** Last message in was {'EXIT',<0.24776.0>,
{noproc,
{gen_server,call,
[<0.30707.0>,{add,<0.11756.1>}

,infinity]}}}

• • When Server state == {state,
    {"/opt/couchbase/var/lib/couchdb",<<"default">>,
    {set_view_group,
    <<11,26,130,54,93,190,161,196,129,182,117,111,77,
    125,181,5>>,
    nil,<<"default">>,
    <<"_design/dev_test_view-1670c92">>,
    <<"javascript">>,[],
    [{set_view,0,[],[],
    [<<"dev_test_view-1670c92">>],
    <<"function (doc) {if(doc.age !== undefined) { emit(doc.age, doc.id);}}">>,
    nil,[],[]}],
    {[]}

    ,
    nil,nil,nil,nil,nil,nil,replica,nil,nil,
    

    {set_view_debug_info,undefined,undefined, undefined}

    }},
    nil,
    {set_view_group,
    <<11,26,130,54,93,190,161,196,129,182,117,111,77,125,
    181,5>>,
    <0.24790.0>,<<"default">>,
    <<"_design/dev_test_view-1670c92">>,
    <<"javascript">>,[],
    [{set_view,0,[],[],
    [<<"dev_test_view-1670c92">>],
    <<"function (doc) {if(doc.age !== undefined) { emit(doc.age, doc.id);}}">>,
    {btree,<0.24790.0>,nil,
    #Fun<couch_btree.3.115762340>,
    ....