Separate parquet metadata by split
Since we added partial conversion to parquet, we introduced the new config/split/ssss.parquet paths but the parquet metadata worker was nos following it and therefore splits could overwrite each other

This affects any dataset with partial conversion and multiple splits, e.g. c4

Related to https://github.com/huggingface/datasets-server/issues/1483
Separate parquet metadata by split: Since we added partial conversion to parquet, we introduced the new config/split/ssss.parquet paths but the parquet metadata worker was nos following it and therefore splits could overwrite each other

This affects any dataset with partial conversion and multiple splits, e.g. c4

Related to https://github.com/huggingface/datasets-server/issues/1483