What is the Datahub recommended way to version metadata (let's say the SchemaMetadata aspect)? Currently I'm not able to view multiple versions on the UI no matter what value I set for version in the MCE json file. But I know that multiple versions are getting stored, because I'm able to rollback using "datahub ingest rollback" and it goes to previous version

There was a UI rolled out some months ago. But there were some issues in it so it was removed (maybe hidden not sure). So this is something the team is aware of and is on team's mind. @green-football-43791 might be able to add more details

Yes so each metadata "Aspect" (schema, ownership, etc) are individually versioned. It is possible to retrieve a particular version of an aspect using the Rest.li API (using the Get Versioned Aspect API), but currently there is no general-purpose support for this in the GraphQL API. I'm assuming this is something you're quite interested in?