mongos> Sh. The status () 
- Sharding Status -- -- -- 
Sharding version: {
"_id" : 1, 
"MinCompatibleVersion" : 5, 
"CurrentVersion" : 6, 
"ClusterId" : ObjectId (" 5 b0e2d7ed1f399107bae2836 ") 
}
Shards: 
{" _id ":" shard1 ", "the host" : "shard1/s05:27020, s06:27020", "state" : 1} 
{" _id ":" shard2 ", "the host" : "shard2/s05:27021, s07:27021", "state" : 1} 
{" _id ":" shard3 ", "the host" : "shard3/s06:27022, s07:27022", "state" : 1} 
The active mongoses: 
"3.4.15" : 3 
Autosplit: 
Currently enabled: yes 
Balancer: 
Currently enabled: yes 
Currently running: no 
NaN 
Failed balancer rounds in the last 5 attempts: 0 
Migration Results for the last 24 hours: 
2: Success 
The databases: 
{" _id ":" testdb ", "primary" : "shard1", "partitioned" : true} 
Testdb. Hashed 
Shard key: {" id ":" hashed "} 
Unique: false 
Balancing: true 
Chunks: 
Shard1 2 
Shard2 2 
Shard3 2 
{" id ": {" $minKey" : 1}} - & gt;> {" id ": NumberLong (" 6148914691236517204")} on: shard1 Timestamp (3, 2) 
{" id ": NumberLong (" 6148914691236517204")} - & gt;> {" id ": NumberLong (" 3074457345618258602")} on: shard1 Timestamp (3, 3) 
{" id ": NumberLong (" 3074457345618258602")} - & gt;> {" id ": NumberLong (0)} on: shard2 Timestamp (3, 4) 
{" id ": NumberLong (0)} - & gt;> {" id ": NumberLong (" 3074457345618258602")} on: shard2 Timestamp (3, 5) 
{" id ": NumberLong (" 3074457345618258602")} - & gt;> {" id ": NumberLong (" 6148914691236517204")} on: shard3 Timestamp (3, 6) 
{" id ": NumberLong (" 6148914691236517204")} - & gt;> {" id ": {" $maxKey" : 1}} on: shard3 Timestamp (3, 7) 
Testdb. Range 
Shard key: {" id ": 1} 
Unique: false 
Balancing: true 
Chunks: 
Shard1 1 
{" id ": {" $minKey" : 1}} - & gt;> {" id ": {" $maxKey" : 1}} on: shard1 Timestamp (1, 0) 
{" _id ":" test ", "primary" : "shard2", "partitioned" : false} 

Only a hash subdivision, can even added to the node, three divided by default shard, only added to the first shard shared1, strives for the great god answers,

CodePudding user response:

Is such data range divided enough pieces begin to split and then migrated to other shard

CodePudding user response:

reference 1st floor rucypli response:

range fragmentation is such data enough time begin to split and migrate to other shard

Squad, I think their 3000 data online circular insert can be randomly assigned to more than one piece, is to set up

CodePudding user response:

Note "partitioned" shard2: false should be configured not good oh