Increase the number of CPUs from 2 to 8 for heavy workers
Currently loading data into table takes too much time but should be decreased proportionally to the number of cpus. 
For example, on my local machine using 2 cpus loads 4Gb parquet files of [Open-Orca/OpenOrca](https://huggingface.co/datasets/Open-Orca/OpenOrca) for 20 sec and with 8 cpus for 5 sec.

Can we try this? 
Increase the number of CPUs from 2 to 8 for heavy workers: Currently loading data into table takes too much time but should be decreased proportionally to the number of cpus. 
For example, on my local machine using 2 cpus loads 4Gb parquet files of [Open-Orca/OpenOrca](https://huggingface.co/datasets/Open-Orca/OpenOrca) for 20 sec and with 8 cpus for 5 sec.

Can we try this? 