whats the way to know which are the classified datasets present and who has the access to it?

[#1]

You can use Apache Ranger to set permissions levels for tables. With the 2.5 release (currently tech preview) you can use Atlas to tag tables or columns as classified and use Ranger to set or view permissions for anything with the classified tag.

[#2 · Accepted solution]

@milind pandit

This is exactly the kind of thing that Tags are for. When an entity, for example a hive table, is tagged, it will show up when you view all entities associated with that tag. With the new Atlas/Ranger integration, you can create security policies that only apply to hive tables or even hive table columns that have been tagged with that tag. This allows you control access to the hive table or hive table columns just by adding or removing the tag or adding/removing use groups to whom the tag based policy applies. For example, using Atlas and Ranger, you can easily keep track of Data Sets classified as PII and control and audit access to these data sets.