Dear @Walter_C , 

After an initial test with a moderate number of rows, we believed it to be the optimal solution.

However, upon increasing the row count beyond a million, we realized the dataset is divided into chunks of unclear size. Sometimes chunks are created with 25k rows, while other times with 20k rows.

Would it be possible to provide a guide on the parameters that can be used to manage chunk sizes effectively?

How I said, here we can't find anything:  Databricks JDBC Driver Installation and Configuration Guide 

Thank you!