I have created parquet files from SQL data using python. I am able to read the data on my local machine, so I know the parquet files are valid. I created a Glue Crawler that creates a database from Parquet files in S3 and the database shows the correct amount of records in the glue dashboard.
When I query that database in Athena it shows "No Results", but does show the column names.
Please see the images below for reference.