Dgraph database upgrade to newer version

Users Dgraph
,
#1

Trying out the new 20.11 release I get the following error:

 manifest has unsupported version: 7 (we support 8).
Please see https://github.com/dgraph-io/badger/blob/master/README.md#i-see-manifest-has-unsupported-version-x-we-support-y-error on how to fix this.

I did not find the referenced section of the provided link, the link should probably be: https://dgraph.io/docs/badger/faq/#i-see-manifest-has-unsupported-version-x-we-support-y-error

How should I now go about the database upgrade? Should I follow the instructions in the FAQ and upgrade the badger database, or should I follow the procedure here https://dgraph.io/docs/deploy/dgraph-administration/#upgrading-database ?

#2

Well, if you upgrade from e.g. v20.07.0 to v20.07.3 you don’t need to mind. But if it is a major release we recommend that you export it and use Bulkloader to reimport.

Also, I think that 20.11 has some breaking changes.

#3

Are there any differences in exporting via the GraphQl query

mutation {
  export(input: {format: "rdf"}) {
    response {
      message
      code
    }
  }
}

and this query?
curl localhost:8080/admin/export

I only use DQL, will the GraphQL export still work, or does it only export GraphQL related data?

Edit: Just tested it myself, seems like both methods give the same data.

#4

No difference, but the HTTP API will be discontinued in the future. In favor of the Admin GraphQL API.

GraphQL and DQL lives in the same realm. If you have a GraphQL setup, it will export your GraphQL schema and the Dataset will reflect the GraphQL pattern. But in general you should not mind about it.

Yeah, they are.