"reason":"{<<\"shutdown\ , [{'DOWN' and eventually reason":"req_timedout when running views during rebalance operation

build 541 has the most recent fixes which was merged to epengine and couchdb

cluster has 6 nodes - 200k items - under 1k ops/sec load

rebalance hangs near completion and all view queries fail and eventually they all time out

http://10.114.237.71:8092/default/_design/dev_players/_view/players?full_set=true&connection_timeout=60000

took 1.04649209976 seconds
{"rows":[

{"key":null,"value":109441}

]}

took 3.05865216255 seconds
{"rows":[

{"key":null,"value":102793}

],
"errors":[
{"from":"http://10.202.101.172:8092/_view_merge/","reason":"{<<\"shutdown\">>,\n <<\"{gen_server,call,[<0.16751.3>,

{pread_iolist,41058}

,infinity]}\">>}"}
]}

took 120.888384104 seconds
{"rows":[

{"key":null,"value":104536}

],
"errors":[
{"from":"http://10.202.101.172:8092/_view_merge/","reason":"{<<\"{function_clause,
n [{couch_set_view,handle_info,
n [{'DOWN',#Ref<0.0.116.88493>,process,<0.25834.3>,
n {badmatch,
n {error,
n {badmatch,
n {error,
n badmatch,
n {file_already_opened,
n \\\"/mnt/default/66.couch\\\",
n [

{couch_db_set,'-init/1-fun-0-',4}

,
n

{lists,foldl,3}

,
n

{couch_db_set,init,1}

,
n

{gen_server,init_it,6}

,
n

{proc_lib,init_p_do_apply,3}]}}}}}},
n {server,\\\"/mnt\\\",<0.16314.3>}]},
n {gen_server,handle_msg,5},
n {proc_lib,init_p_do_apply,3}

]}\">>,\n <<\"{gen_server,call,
n [couch_set_view,
n {get_group_server,<<\\\"default\\\">>,
n {set_view_group,
n <<126,233,23,3,126,62,146,158,97,21,49,212,152,252,155,124>>,
n nil,<<\\\"default\\\">>,<<\\\"_design/dev_players\\\">>,<<\\\"javascript\\\">>,[],
n [{set_view,0,[],[],[],
n <<\\\"function (doc) {\\\\n if(doc.email)

{\\\\n emit(doc._id, doc.city);\\\\n }

\\\\n}\\\">>,
n nil,
n [

{<<\\\"players\\\">>,<<\\\"_count\\\">>}

],
n []}],
n

{[]}

,
n nil,nil,nil,nil,nil,nil,undefined,nil,nil}},
n infinity]}\">>}"}
]}

took 0.724260807037 seconds
{"rows":[

{"key":null,"value":104731}

],
"errors":[

{"from":"http://10.202.101.172:8092/_view_merge/","reason":"req_timedout"}

]}

took 60.014398098 seconds
{"rows":[

{"key":null,"value":133065}

],
"errors":[

{"from":"http://10.202.101.172:8092/_view_merge/","reason":"req_timedout"}

]}