Databricks Community

What exactly is row tracking and why should we use it for our delta tables? Could you explain with an example how it works internally and is it mandatory to use? 

Hey Team,I have a few questions regarding VACUUM and VACUUM LITE1. How do they work internally, do both of them scan the entire table storage directory?2. How should we use these in our prod jobs..I mean should we always run VACUUM LITE or VACUUM or ...