Get the total amount of S3 storage used per user

[zach]

In Databricks is it possible to get the total amount of delta lake storage being used in the parquet format per user? 

Subsequently, what are the best practices on making sure that users saving delta files are not taking up storage unnecessarily, for example is vacuuming files the quickest method for clearing things up?

Thanks,

Zach 

[Sharanya13]

Hi @zach, can you expand on why you need to know the total storage per user?

Best practices - If you use Databricks managed tables, optimization is taken care of. https://docs.databricks.com/aws/en/optimizations/predictive-optimization