Hi Team. Is there a namespace concept in Pinot? We would like to park tables under different namespaces for access control. If namespaces are not available, may I know how this can be achieved? Should be use some metadata tagging?

I think you are looking for https://docs.pinot.apache.org/basics/components/tenant

no ... tenant should provide compute and storage isolation in my opinion namespaces will be within same tenant basically

Tenant is the only way.. we have had few requests to add namespace or some other way to group a bunch of tables

Yes, I will put in an issue