• We have a simple sharded deployment 2 shards SH01 and SH02

We have relatively big collection video.plays

mongos> db.video.plays.stats()
{
"sharded" : false,
"primary" : "SH01",
"ns" : "reportsRaw.video.plays",
"count" : 208594003,
"size" : 34875392112,
"avgObjSize" : 167.1926882385013,
"storageSize" : 39355395856,
"numExtents" : 39,
"nindexes" : 2,
"lastExtentSize" : 2146426864,
"paddingFactor" : 1,
"systemFlags" : 1,
"userFlags" : 0,
"totalIndexSize" : 27328222768,
"indexSizes" :

{ "_id_" : 6154320480, "cid_1_bid_1_pid_1_date_1" : 21173902288 }

,
"ok" : 1
}

Notice that I added index

{ cid: 1, bid: 1, pid: 1, date: 1 }

Now I am trying to shard this collection and issuing the following command from one of the mongos hosts in our cluster:

db.runCommand({ shardCollection: "reportsRaw.video.plays", key: { cid: 1, bid: 1, pid: 1, date: 1}})

This command gets stuck and doesn't do anything:

• shard logs don't show anything
• mongo shell hangs and nothing happens for really long time

When I Control-C from the shell I see the following output:

mongos> db.runCommand({ shardCollection: "reportsRaw.video.plays", key: { cid: 1, bid: 1, pid: 1, date: 1}})

^CMon Sep 23 18:37:12.003 Assertion: 13111:field not found, expected type 2
0x74e711 0x71778b 0x717ccc 0x5f43e6 0x5dccb4 0x7fee481b40b0 0x7fee48f7a085 0x73da43 0x73da59 0x741e45 0x73a60c 0x73c57b 0x73ca34 0x64d6ef 0x67de37 0x63e62a 0x658411 0x70bd17 0x6ec53c 0x2c6cda94bcf7
mongo(_ZN5mongo15printStackTraceERSo+0x21) [0x74e711]
mongo(_ZN5mongo11msgassertedEiPKc+0x9b) [0x71778b]
mongo() [0x717ccc]
mongo(_ZNK5mongo11shell_utils18ConnectionRegistry30killOperationsOnAllConnectionsEb+0x1526) [0x5f43e6]
mongo(_Z10quitNicelyi+0x24) [0x5dccb4]
/lib/x86_64-linux-gnu/libc.so.6(+0x370b0) [0x7fee481b40b0]
/lib/x86_64-linux-gnu/libpthread.so.0(recv+0x75) [0x7fee48f7a085]
mongo(_ZN5mongo6Socket5_recvEPci+0x13) [0x73da43]
mongo(_ZN5mongo6Socket11unsafe_recvEPci+0x9) [0x73da59]
mongo(_ZN5mongo6Socket4recvEPci+0x75) [0x741e45]
mongo(_ZN5mongo13MessagingPort4recvERNS_7MessageE+0x8c) [0x73a60c]
mongo(ZN5mongo13MessagingPort4recvERKNS_7MessageERS1+0x1b) [0x73c57b]
mongo(ZN5mongo13MessagingPort4callERNS_7MessageES2+0x34) [0x73ca34]
mongo(_ZN5mongo18DBClientConnection4callERNS_7MessageES2_bPSs+0x4f) [0x64d6ef]
mongo(_ZN5mongo14DBClientCursor4initEv+0xb7) [0x67de37]
mongo(_ZN5mongo12DBClientBase5queryERKSsNS_5QueryEiiPKNS_7BSONObjEii+0xea) [0x63e62a]
mongo(_ZN5mongo18DBClientConnection5queryERKSsNS_5QueryEiiPKNS_7BSONObjEii+0xa1) [0x658411]
mongo(_ZN5mongo9mongoFindEPNS_7V8ScopeERKN2v89ArgumentsE+0x387) [0x70bd17]
mongo(_ZN5mongo7V8Scope10v8CallbackERKN2v89ArgumentsE+0xdc) [0x6ec53c]
[0x2c6cda94bcf7]
Mon Sep 23 18:37:12.056 Error: field not found, expected type 2 at src/mongo/shell/query.js:78
^CMon Sep 23 18:37:25.357 Assertion: 13111:field not found, expected type 2
0x74e711 0x71778b 0x717ccc 0x5f43e6 0x5dccb4 0x7fee481b40b0 0x7fee48f76ca2 0x7053da 0x797d99 0x7fee48f72f8e 0x7fee48276e1d
mongo(_ZN5mongo15printStackTraceERSo+0x21) [0x74e711]
mongo(_ZN5mongo11msgassertedEiPKc+0x9b) [0x71778b]
mongo() [0x717ccc]
mongo(_ZNK5mongo11shell_utils18ConnectionRegistry30killOperationsOnAllConnectionsEb+0x1526) [0x5f43e6]
mongo(_Z10quitNicelyi+0x24) [0x5dccb4]
/lib/x86_64-linux-gnu/libc.so.6(+0x370b0) [0x7fee481b40b0]
/lib/x86_64-linux-gnu/libpthread.so.0(pthread_cond_wait+0xc2) [0x7fee48f76ca2]
mongo(_ZN5mongo15DeadlineMonitorINS_7V8ScopeEE21deadlineMonitorThreadEv+0x56a) [0x7053da]
mongo() [0x797d99]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x7f8e) [0x7fee48f72f8e]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7fee48276e1d]
Mon Sep 23 18:37:25.360 terminate() called in shell, printing stack:
0x74e711 0x5dcace 0x7fee48abef76 0x7fee48abefa3 0x7fee48abf1de 0x717831 0x717ccc 0x5f43e6 0x5dccb4 0x7fee481b40b0 0x7fee48f76ca2 0x7053da 0x797d99 0x7fee48f72f8e 0x7fee48276e1d
mongo(_ZN5mongo15printStackTraceERSo+0x21) [0x74e711]
mongo(_Z11myterminatev+0x3e) [0x5dcace]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x5ef76) [0x7fee48abef76]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x5efa3) [0x7fee48abefa3]
/usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x5f1de) [0x7fee48abf1de]
mongo(_ZN5mongo11msgassertedEiPKc+0x141) [0x717831]
mongo() [0x717ccc]
mongo(_ZNK5mongo11shell_utils18ConnectionRegistry30killOperationsOnAllConnectionsEb+0x1526) [0x5f43e6]
mongo(_Z10quitNicelyi+0x24) [0x5dccb4]
/lib/x86_64-linux-gnu/libc.so.6(+0x370b0) [0x7fee481b40b0]
/lib/x86_64-linux-gnu/libpthread.so.0(pthread_cond_wait+0xc2) [0x7fee48f76ca2]
mongo(_ZN5mongo15DeadlineMonitorINS_7V8ScopeEE21deadlineMonitorThreadEv+0x56a) [0x7053da]
mongo() [0x797d99]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x7f8e) [0x7fee48f72f8e]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7fee48276e1d]