Mikita Karotchykau

> Can you share your version of pyarrow please? ``` # Name Version Build Channel pyarrow 8.0.0 py39hc4c82e3_1_cpu conda-forge ``` > Is there something special about the contents of the...

I've tried to put every `data_dict` in a different parquet file and it seems to work - the error has disappeared (`vaex.open_many` is used). However, I don't get why the...

> Regarding your workaround - that is valid. You can also export the dataframe you get via `open_many` to a single parquet file, or for a (much!) better performance to...