Is there a plan to add an upload/download API to Dremio? It might be handy to be able to download the Parquet files created by Dremio and upload Parquet files created outside of Dremio in a managed fashion.
For download you could use our SQL rest apinor jdbc/odbc to download the results of any query.
For upload we recommend using a filesystem (NAS, hdfs, s3, etc) and attaching it as a source. Uploading to home space is meant for testing small files.
You can then promote the parquet files (can be done via our rest API or the UI) and query them.