Find largest document size in MongoDB

Question

Is it possible to find the largest document size in MongoDB?

db.collection.stats() shows average size, which is not really representative because in my

Answer 1

You can use a small shell script to get this value.

Note: this will perform a full table scan, which will be slow on large collections.

let max = 0, id = null;
db.test.find().forEach(doc => {
    const size = Object.bsonsize(doc); 
    if(size > max) {
        max = size;
        id = doc._id;
    } 
});
print(id, max);