This is a
mongoshmethod. This is not the documentation for
Node.jsor other programming language specific driver methods.
For the legacy
mongoshell documentation, refer to the documentation for the corresponding MongoDB Server release:
For MongoDB API drivers, refer to the language specific MongoDB driver documentation.
Returns: 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.
If an index uses prefix compression (which is the
default for WiredTiger), the returned size reflects the compressed size of the index.
Starting in MongoDB 4.4, to run on a replica set member,
collStatsoperations require the member to be in
SECONDARYstate. If the member is in another state, such as
STARTUP2, the operation errors.