MongoDB批量写入上限MongoDB批量写入上限由maxWriteBatchSize定义，3.6以前为1,000，3

MongoDB批量写入上限由maxWriteBatchSize定义，3.6以前为1,000，3.6以后为100,000。

查看maxWriteBatchSize

执行命令

db.runCommand({hello: 1})

结果为"maxWriteBatchSize": 100000

[
  {
    "connectionId": 8,
    "isWritablePrimary": true,
    "localTime": {"$date": "2022-08-13T00:15:19.241Z"},
    "logicalSessionTimeoutMinutes": 30,
    "maxBsonObjectSize": 16777216,
    "maxMessageSizeBytes": 48000000,
    "maxWireVersion": 9,
    "maxWriteBatchSize": 100000,
    "minWireVersion": 0,
    "ok": 1,
    "readOnly": false,
    "topologyVersion": {
      "processId": {"$oid": "62f6e707793e7c4def79c999"},
      "counter": 0
    }
  }
]

超过限制怎么办

如果单次数据超过maxWriteBatchSize限制，驱动程序会拆分数据。如单次插入200,000条数据，驱动将会分2次执行，每次100,000条数据。