Data Governance Support by Atlas

Both CDH and CDP environments support governance functionality for Impala operations. When migrating your workload from CDH to CDP, you must migrate your Navigator metadata to Atlas manually because there is no automatic migration of Navigator metadata from CDH to CDP.

The two environments collect similar information to describe Impala activities, including:

Audits for Impala access requests
Metadata describing Impala queries
Metadata describing any new data assets created or updated by Impala operations

The services that support these operations are different in the two environments. Functionality is distributed across services as follows:


Feature	CDH	CDP
Auditing
Access requests	Audit tab in Navigator console	Audit page in Ranger console
Service operations that create or update metadata catalog entries	Audit tab in Navigator console	Audit tab for each entity in Atlas dashboard
Service operations in general	Audit tab in Navigator console	No other audits collected.
Metadata Catalog
Impala operations: `CREATE TABLE AS SELECT` `CREATE VIEW` `ALTER VIEW AS SELECT` `INSERT INTO` `INSERT` `OVERWRITE`	Process and Process Execution entities Column- and table-level lineage	Process and Process Execution entities Column- and table-level lineage

Migrating Navigator content to Atlas

As part of migrating your workload from CDH to CDP, you must use Atlas as the Cloudera Navigator Data Management for your cluster in CDP. You can choose to migrate your Navigator metadata to Atlas manually because there is no automatic migration of Navigator metadata from CDH to CDP. Atlas 'rebuilds' the metadata for existing cluster assets and lineage using new operations. However Navigator Managed metadata tags and any metadata you manually entered in CDH must be manually ported to Atlas Business Metadata Tags. If you have applications that are using the Navigator, you must port them to use Atlas APIs.

Migrating content from Navigator to Atlas involves 3 steps:

extracting the content from Navigator
transforming that content into a form Atlas can consume
importing the content into Atlas