'autoIndexID' is not a valid collection option - mongoDB

Question

When I try to run this on my MongoDB:

db.createCollection(\"mycol\", { capped : true, autoIndexID : true, size : 6142800, max : 10000 } )

I

Answer 1

The correct option is autoIndexId , you had put autoIndexID .

Answer 2

You can also use the option --convertLegacyIndexes (you'll need to use a fairly new version of mongorestore though).

That has been working for me for dumps made from mongodb v2.6

Answer 3

autoIndexId option has been removed in 3.4 and was already deprecated in 3.2

From mongo doc and https://jira.mongodb.org/browse/SERVER-19067:

Deprecated since version 3.2: The autoIndexId option will be removed in version 3.4.

Also, for capped collection :

Capped collections have an _id field and an index on the _id field by default.