How to Add New Data to an Existing Parquet Dataset?

John6666 · February 7, 2025, 7:58am

Features like incremental upload may still be in the works…

Incremental dataset (e.g. `.push_to_hub(..., append=True)`)

opened 03:18PM - 10 Oct 23 UTC

enhancement

### Feature request Have the possibility to do `ds.push_to_hub(..., append=True…)`. ### Motivation Requested in this [comment](https://huggingface.co/datasets/laion/dalle-3-dataset/discussions/3#65252597c4edc168202a5eaa) and this [comment](https://huggingface.co/datasets/laion/dalle-3-dataset/discussions/4#6524f675c9607bdffb208d8f). Discussed internally on [slack](https://huggingface.slack.com/archives/C02EMARJ65P/p1696950642610639?thread_ts=1690554266.830949&cid=C02EMARJ65P). ### Your contribution What I suggest to do for parquet datasets is to use `CommitOperationCopy` + `CommitOperationDelete` from `huggingface_hub`: 1. list files 2. copy files from parquet-0001-of-0004 to parquet-0001-of-0005 3. delete files like parquet-0001-of-0004 4. generate + add last parquet file parquet-0005-of-0005 => make a single commit with all commit operations at once I think it should be quite straightforward to implement. Happy to review a PR (maybe conflicting with the ongoing "1 commit push_to_hub" PR https://github.com/huggingface/datasets/pull/6269)

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How to Add New Data to an Existing Parquet Dataset?

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