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Friday, February 13, 2015

[Mongodb] M-102 Week 6 Assignments

---- 6.1
-- Stats sur la collections initiale
mongos> db.trades.stats()
{
 "sharded" : false,
 "primary" : "shard0000",
 "ns" : "week6.trades",
 "count" : 1000001,
 "size" : 244000240,
 "avgObjSize" : 243.999996000004,
 "storageSize" : 315006976,
 "numExtents" : 15,
 "nindexes" : 1,
 "lastExtentSize" : 84426752,
 "paddingFactor" : 1,
 "systemFlags" : 1,
 "userFlags" : 0,
 "totalIndexSize" : 32458720,
 "indexSizes" : {
  "_id_" : 32458720
 },
 "ok" : 1
}
-- On retrouve le même nombre de document dans le shard car il est unique
mongos> homework.a()
1000001

---- 6.2
> 3

---- 6.3
> 2 (shards bien presents)

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