Understanding the Data Catalog Profiler

Data Catalog includes a profiler engine that can run data profiling operations as a pipeline on data located in multiple data lakes. You can install the profiler agent in a data lake and set up a specific schedule to generate various types of data profiles. Data profilers generate metadata annotations on the assets for various purposes.

Profiler Name Description
Cluster Sensitivity Profiler A sensitive data profiler- PII, PCI, HIPAA and others.
Ranger Audit Profiler A Ranger audit log summarizer.
Hive Column Profiler Provides summary statistics like Maximum, Minimum, Mean, Unique, and Null values at the Hive column level.

For example, data profilers can create summarized information about contents of an asset and also provide annotations that indicate its shape (such as distribution of values in a box plot or histogram).