Multiprocessing windows error
Usually OSError of an arrow file on windows means that the file is currently opened as a dataset object, so you can't overwrite it until the dataset object falls out of scope.
Can you make sure that there's no dataset object that loaded the `cache-9b4f203a63742dfc.arrow` file ?
As described here https://huggingface.co/blog/fine-tune-xlsr-wav2vec2

When using the num_proc argument on windows the whole Python environment crashes and hanging in loop.
For example at the map_to_array part.
An error occures because the cache file already exists and windows throws and error. After this the log crashes into an loop 
Multiprocessing windows error 
 As described here https://huggingface.co/blog/fine-tune-xlsr-wav2vec2

When using the num_proc argument on windows the whole Python environment crashes and hanging in loop.
For example at the map_to_array part.
An error occures because the cache file already exists and windows throws and error. After this the log crashes into an loop  
 Usually OSError of an arrow file on windows means that the file is currently opened as a dataset object, so you can't overwrite it until the dataset object falls out of scope.
Can you make sure that there's no dataset object that loaded the `cache-9b4f203a63742dfc.arrow` file ?