Mongodb: db.collection.copyTo() and eval() have been deprecated. What's the alternatives?

Question

I find that db.collection.copyTo() and eval() have been deprecated since 3.0. But I do not find what can be instead.

What\'s the alternatives?

Answer 1

Create a mongodump of that collection, do mongorestore to a separate or new collection.

This wont stop read/write or wont lock the collection.

mongodump --db db-name --collection collection-name --archive=collection-name.archive

or save as json both works

If saved as archive, to restore

mongorestore --db db-name --collection collection-name --archive=collection-name.archive