read_parquet super slow

My computer has 64 GB RAM and the parquet files are not large at all. However, they take surprisingly long time to read. I don't know what is the potential cause. If you need more info, please feel free to let me know.


Start by reproducing the reported read_parquet timing with the parquet files described in the issue and inspect the attached performance evidence. No source file or test is identified, and completion would require isolating the cause of the unexpectedly slow read before defining a fix.

Written by the indexing model from the issue text.