db.collection.totalSize()

db.collection.totalSize()

Important

mongosh Method

This page documents a mongosh method. This is not the documentation for database commands or language-specific drivers, such as Node.js.

For the database command, see the totalSize field returned by the collStats command.

For MongoDB API drivers, refer to the language-specific MongoDB driver documentation.

For the legacy mongo shell documentation, refer to the documentation for the corresponding MongoDB Server release:

mongo shell v4.4

Returns:返回：

The total size in bytes of the data in the collection plus the size of every index on the collection.If collection data is compressed (which is the default for WiredTiger), the returned size reflects the compressed size of the collection data.集合中数据的总大小（以字节为单位）加上集合上每个索引的大小。如果压缩了集合数据（这是WiredTiger的默认值），则返回的大小反映了集合数据的压缩大小。 If an index uses prefix compression (which is the default for WiredTiger), the returned size reflects the compressed size of the index.如果索引使用前缀压缩（这是WiredTiger的默认值），则返回的大小反映索引的压缩大小。

The value returned is the sum of db.collection.storageSize() and db.collection.totalIndexSize() in bytes.返回的值是db.collection.storageSize()和db.collection.totalIndexSize()的总和（以字节为单位）。

Starting in MongoDB 4.4, to run on a replica set member, collStats operations require the member to be in PRIMARY or SECONDARY state. 从MongoDB 4.4开始，要在副本集成员上运行，collStats操作要求该成员处于PRIMARY或SECONDARY状态。If the member is in another state, such as STARTUP2, the operation errors.如果成员处于其他状态，例如 STARTUP2，则操作将出错。

In previous versions, the operations also run when the member is in STARTUP2. The operations wait until the member transitioned to RECOVERING.在以前的版本中，成员处于STARTUP2时也会运行这些操作。操作将等待，直到成员转换到RECOVERING。