I have a code in NodeJS that updates the fields of a collection but it is very slow.
My collection contains +16 million documents, do any of you know a better way to do this?
const db = client.db("db");
const collection = db.collection("collection");
var cursor = product.find({});
var manipulator = function(document) {
document.fieldCopy = document.field;
return { $set: document };
};
while (await cursor.hasNext()) {
var thisdoc = await cursor.next();
var newDoc = manipulator(thisdoc);
product.updateOne({ "_id": thisdoc['_id'] }, newDoc);
};
MongoDB version: 4.0.22
Sorry for the bad English!
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