Some, but not all scripts report "load time" for stateless engines (time to download parquet and sync) #944

While reviewing recent DataFusion results, I found there is now a "load time" reported for DataFusion

For example, this link

Here is the source file that has 17:

It was added in 6d5ee0a which was part of a large refactoring in #860

I am not sure if you intended the load_time to include the download / fsync time for the raw parquet dataset, but if you did I would request that we measure it consistently across stateless engines