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
|
// Tests splitting a chunk twice
s = new ShardingTest( "shard_keycount" , 2, 0, 1, /* chunkSize */1);
// Kill balancer
s.config.settings.update({ _id: "balancer" }, { $set : { stopped: true } }, true )
dbName = "test"
collName = "foo"
ns = dbName + "." + collName
db = s.getDB( dbName );
for(var i = 0; i < 10; i++){
db.foo.insert({ _id : i })
}
// Enable sharding on DB
s.adminCommand( { enablesharding : dbName } );
s.ensurePrimaryShard(dbName, 'shard0001');
// Enable sharding on collection
s.adminCommand( { shardcollection : ns, key : { _id : 1 } } );
// Split into two chunks
s.adminCommand({ split : ns, find : { _id : 3 } })
coll = db.getCollection( collName )
// Split chunk again
s.adminCommand({ split : ns, find : { _id : 3 } })
coll.update({ _id : 3 }, { _id : 3 })
// Split chunk again
s.adminCommand({ split : ns, find : { _id : 3 } })
coll.update({ _id : 3 }, { _id : 3 })
// Split chunk again
// FAILS since the key count is based on the full index, not the chunk itself
// i.e. Split point calc'd is 5 key offset (10 documents), but only four docs
// in chunk with bounds _id : 0 => 5
s.adminCommand({ split : ns, find : { _id : 3 } })
s.stop();
|
