1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
var shardA = startMongodEmpty("--shardsvr", "--port", 30001, "--dbpath", "/data/migrateBigger0");
var shardB = startMongodEmpty("--shardsvr", "--port", 30002, "--dbpath", "/data/migrateBigger1");
var config = startMongodEmpty("--configsvr", "--port", 29999, "--dbpath", "/data/migrateBiggerC");
var mongos = startMongos("--port", 30000, "--configdb", "localhost:29999")
var admin = mongos.getDB("admin")
admin.runCommand({ addshard : "localhost:30001" })
admin.runCommand({ addshard : "localhost:30002" })
db = mongos.getDB("test");
var coll = db.getCollection("stuff")
var data = "x"
var nsq = 16
var n = 255
for( var i = 0; i < nsq; i++ ) data += data
dataObj = {}
for( var i = 0; i < n; i++ ) dataObj["data-" + i] = data
for( var i = 0; i < 40; i++ ) {
if(i != 0 && i % 10 == 0) printjson( coll.stats() )
coll.save({ data : dataObj })
}
db.getLastError();
assert.eq( 40 , coll.count() , "prep1" );
printjson( coll.stats() )
admin.runCommand({ enablesharding : "" + coll.getDB() })
admin.printShardingStatus()
admin.runCommand({ shardcollection : "" + coll, key : { _id : 1 } })
assert.lt( 5 , mongos.getDB( "config" ).chunks.find( { ns : "test.stuff" } ).count() , "not enough chunks" );
assert.soon(
function(){
res = mongos.getDB( "config" ).chunks.group( { cond : { ns : "test.stuff" } ,
key : { shard : 1 } ,
reduce : function( doc , out ){ out.nChunks++; } ,
initial : { nChunks : 0 } } );
printjson( res );
return res.length > 1 && Math.abs( res[0].nChunks - res[1].nChunks ) <= 3;
} ,
"never migrated" , 9 * 60 * 1000 , 1000 );
stopMongod( 30000 );
stopMongod( 29999 );
stopMongod( 30001 );
stopMongod( 30002 );
|
