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When using `load_dataset` on Python 3.14, a `TypeError` is raised during the fingerprinting process inside the bundled `_dill.py`. This happens because Python 3.14 changed the signature of the internal C-level `_Pickler._batch_setitems` to require 3 arguments (`self, items, obj`), while `dat... | value:https://api.github.com/repos/huggingface/datasets/issues/8373/comments | value:I_kwDODunzps8AAAABKqkD8g | value:open | value:8 | value:2026-08-29T21:30:28Z | value:https://api.github.com/repos/huggingface/datasets/issues/8373/labels{/name} | value:8373 | json:{"login": "Vinello28", "id": 74827522, "node_id": "MDQ6VXNlcjc0ODI3NTIy", "avatar_url": "https://avatars.githubusercontent.com/u/74827522?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Vinello28", "html_url": "https://github.com/Vinello28", "followers_url": "https://api.github.com/users/Vinello28/fo... | true | |||||||||||
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### Summary of Documentation Improvements:
- **\docs/source/create_dataset.mdx\**: Added a callout link in the introductory **Note** block pointing to the \
epository_structure\ guide so users creating a dataset can easily find guidance on organizing files, splits, and formats.
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`Dataset.select_columns` checks that every requested column exists, but never checks that the request is free of duplicates:
```python
missing_columns = set(column_names) - set(self._data.column_names)
if missing_columns:
raise ValueError(...)
```
Passing the same name twice then produces a... | value:https://api.github.com/repos/huggingface/datasets/issues/8368/comments | value:PR_kwDODunzps72rBVf | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8368", "html_url": "https://github.com/huggingface/datasets/pull/8368", "diff_url": "https://github.com/huggingface/datasets/pull/8368.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8368.patch", "merged_at": null} | value:2026-07-27T12:50:22Z | value:https://api.github.com/repos/huggingface/datasets/issues/8368/labels{/name} | value:8368 | json:{"login": "AbdullahRasheed45", "id": 121880873, "node_id": "U_kgDOB0PBKQ", "avatar_url": "https://avatars.githubusercontent.com/u/121880873?v=4", "gravatar_id": "", "url": "https://api.github.com/users/AbdullahRasheed45", "html_url": "https://github.com/AbdullahRasheed45", "followers_url": "https://api.github.com/... | value:False | true | |||||||||||
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```python
DatasetDict({"train": ds_train, "test": ds_test}).push_to_hub("user/repo")
DatasetDict({"train": ds_train}).push_to_hub("user/repo") # "test" is gone
load_dataset("user/repo")
# ValueError: Couldn't infer the same data file forma... | value:https://api.github.com/repos/huggingface/datasets/issues/8367/comments | value:PR_kwDODunzps72foi_ | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8367", "html_url": "https://github.com/huggingface/datasets/pull/8367", "diff_url": "https://github.com/huggingface/datasets/pull/8367.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8367.patch", "merged_at": "2026-07-28T10:01:47Z"} | value:2026-07-28T10:01:47Z | value:https://api.github.com/repos/huggingface/datasets/issues/8367/labels{/name} | value:8367 | json:{"login": "pjh4993", "id": 12472082, "node_id": "MDQ6VXNlcjEyNDcyMDgy", "avatar_url": "https://avatars.githubusercontent.com/u/12472082?v=4", "gravatar_id": "", "url": "https://api.github.com/users/pjh4993", "html_url": "https://github.com/pjh4993", "followers_url": "https://api.github.com/users/pjh4993/followers"... | value:False | true | |||||||||
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`Dataset.to_json`, `to_csv` and `to_sql` write a nullable integer column as floating point rather than integers.
Fixes #8365.
### Root cause
The three writers build a pandas frame with a bare `batch.to_pandas()`:
- `io/json.py` `_batch_json`
- `io/csv.py` `_batch_csv`
- `io/sql.py` `_batc... | value:https://api.github.com/repos/huggingface/datasets/issues/8366/comments | value:PR_kwDODunzps72UVce | value:closed | value:3 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8366", "html_url": "https://github.com/huggingface/datasets/pull/8366", "diff_url": "https://github.com/huggingface/datasets/pull/8366.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8366.patch", "merged_at": "2026-07-28T10:29:55Z"} | value:2026-07-28T12:11:07Z | value:https://api.github.com/repos/huggingface/datasets/issues/8366/labels{/name} | value:8366 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | value:False | true | |||||||||
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`Dataset.to_json`, `to_csv`, and `to_sql` write a nullable integer column as floating point rather than integers. All three writers (`io/json.py`, `io/csv.py`, `io/sql.py`) call `batch.to_pandas()` with pyarrow's default `integer_object_nulls=False`, which casts any integer column containing... | value:https://api.github.com/repos/huggingface/datasets/issues/8365/comments | value:I_kwDODunzps8AAAABKJdn3g | value:closed | value:0 | value:2026-07-28T10:29:56Z | value:https://api.github.com/repos/huggingface/datasets/issues/8365/labels{/name} | value:8365 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | true | ||||||||
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Fixes #8362.
A fixed-shape `ArrayXD` column (`Array2D(shape=(1, 2), dtype="int64")`, and so on) that contains a `None` row is silently cast to float on the python read path: `to_dict()` / `to_pylist()` return every value as a float, and integers above 2**53 are altered, because an unrel... | value:https://api.github.com/repos/huggingface/datasets/issues/8363/comments | value:PR_kwDODunzps71r4lE | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8363", "html_url": "https://github.com/huggingface/datasets/pull/8363", "diff_url": "https://github.com/huggingface/datasets/pull/8363.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8363.patch", "merged_at": "2026-07-24T11:59:11Z"} | value:2026-07-25T12:11:31Z | value:https://api.github.com/repos/huggingface/datasets/issues/8363/labels{/name} | value:8363 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | value:False | true | |||||||||
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A fixed-shape `ArrayXD` column (for example `Array2D(shape=(1, 2), dtype="int64")`) that contains at least one `None` row is silently cast to float on the python read path. `to_dict()` / `to_pylist()` return every value as a float, and integers above 2**53 lose precision, purely because an u... | value:https://api.github.com/repos/huggingface/datasets/issues/8362/comments | value:I_kwDODunzps8AAAABJ_L-6w | value:closed | value:0 | value:2026-07-24T11:59:13Z | value:https://api.github.com/repos/huggingface/datasets/issues/8362/labels{/name} | value:8362 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | true | ||||||||
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## What
Changes the type annotation of `path_or_paths` from `Union[PathLike, list[PathLike]]`
to `Union[PathLike, Sequence[PathLike]]` in:
- `Dataset.from_csv`
- `Dataset.from_json`
- `Dataset.from_parquet`
- `Dataset.from_text`
## Why
`list` is invariant in mypy, so passing a `List[Union... | value:https://api.github.com/repos/huggingface/datasets/issues/8361/comments | value:PR_kwDODunzps71rhT8 | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8361", "html_url": "https://github.com/huggingface/datasets/pull/8361", "diff_url": "https://github.com/huggingface/datasets/pull/8361.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8361.patch", "merged_at": null} | value:2026-07-25T06:32:14Z | value:https://api.github.com/repos/huggingface/datasets/issues/8361/labels{/name} | value:8361 | json:{"login": "Par-star", "id": 178062976, "node_id": "U_kgDOCp0GgA", "avatar_url": "https://avatars.githubusercontent.com/u/178062976?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Par-star", "html_url": "https://github.com/Par-star", "followers_url": "https://api.github.com/users/Par-star/followers", ... | value:False | true | |||||||||||
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`IterableDataset.filter()` wraps the Arrow source in `FormattedExamplesIterable` but, unlike `map()`, does not first wrap it in `RebatchedArrowExamplesIterable(batch_size=1)`. `FormattedExamplesIterable.__iter__` takes the Arrow branch and pulls a whole table from `ArrowExamplesIterable`, advancing... | value:https://api.github.com/repos/huggingface/datasets/issues/8360/comments | value:PR_kwDODunzps71rB6x | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8360", "html_url": "https://github.com/huggingface/datasets/pull/8360", "diff_url": "https://github.com/huggingface/datasets/pull/8360.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8360.patch", "merged_at": "2026-07-24T12:06:19Z"} | value:2026-07-25T12:11:30Z | value:https://api.github.com/repos/huggingface/datasets/issues/8360/labels{/name} | value:8360 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | value:False | true | |||||||||
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Resuming a streaming `IterableDataset.filter()` from a `state_dict()` checkpoint silently drops rows: the remainder of the in-flight Arrow table is skipped. For a single-shard dataset this loses up to a full row group per checkpoint, and for a single-table shard it can drop every unconsumed ... | value:https://api.github.com/repos/huggingface/datasets/issues/8359/comments | value:I_kwDODunzps8AAAABJ-7a3Q | value:closed | value:1 | value:2026-07-24T12:06:21Z | value:https://api.github.com/repos/huggingface/datasets/issues/8359/labels{/name} | value:8359 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | true | ||||||||
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`CsvConfig.pd_read_csv_kwargs` silently drops `on_bad_lines` and `encoding_errors` on pandas 2.0, 2.1, and 2.2, so `load_dataset("csv", ..., on_bad_lines="skip")` (or `"warn"`, or a non-default `encoding_errors`) is ignored and a malformed row raises `ParserError` instead of being skipped.
The version g... | value:https://api.github.com/repos/huggingface/datasets/issues/8358/comments | value:PR_kwDODunzps71n7G_ | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8358", "html_url": "https://github.com/huggingface/datasets/pull/8358", "diff_url": "https://github.com/huggingface/datasets/pull/8358.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8358.patch", "merged_at": "2026-07-24T11:54:35Z"} | value:2026-07-25T12:11:29Z | value:https://api.github.com/repos/huggingface/datasets/issues/8358/labels{/name} | value:8358 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | value:False | true | |||||||||
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## Key Changes
- **Bucket card loading** (`src/datasets/load.py`)**:** passed the card object instead of its `.data`, crashing ... | value:https://api.github.com/repos/huggingface/datasets/issues/8354/comments | value:PR_kwDODunzps71XABh | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8354", "html_url": "https://github.com/huggingface/datasets/pull/8354", "diff_url": "https://github.com/huggingface/datasets/pull/8354.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8354.patch", "merged_at": "2026-07-24T11:51:41Z"} | value:2026-07-24T11:51:41Z | value:https://api.github.com/repos/huggingface/datasets/issues/8354/labels{/name} | value:8354 | json:{"login": "pjh4993", "id": 12472082, "node_id": "MDQ6VXNlcjEyNDcyMDgy", "avatar_url": "https://avatars.githubusercontent.com/u/12472082?v=4", "gravatar_id": "", "url": "https://api.github.com/users/pjh4993", "html_url": "https://github.com/pjh4993", "followers_url": "https://api.github.com/users/pjh4993/followers"... | value:False | true | |||||||||
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Adds an optional `return_file_name` parameter to the JSON loader (load_dataset).
When set to True, a `file_name` column is added with the source file path,
useful for resuming training from checkpoints by skipping already-used shards. | value:https://api.github.com/repos/huggingface/datasets/issues/8353/comments | value:PR_kwDODunzps71TVV3 | value:closed | value:2 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8353", "html_url": "https://github.com/huggingface/datasets/pull/8353", "diff_url": "https://github.com/huggingface/datasets/pull/8353.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8353.patch", "merged_at": null} | value:2026-07-24T11:57:10Z | value:https://api.github.com/repos/huggingface/datasets/issues/8353/labels{/name} | value:8353 | json:{"login": "Par-star", "id": 178062976, "node_id": "U_kgDOCp0GgA", "avatar_url": "https://avatars.githubusercontent.com/u/178062976?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Par-star", "html_url": "https://github.com/Par-star", "followers_url": "https://api.github.com/users/Par-star/followers", ... | value:False | true | |||||||||
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## Root cause
`NumpyArrowExtractor._arrow_array_to_numpy` decides `dtype=object` with:
```python
if any(
(isinstance(x, np.ndarray) and (x.dtype == object or x.shape != array[0].shape))
or (isinstance(x, float) and np.isnan(x))
for x in array
):
```
The second clause was added in #3195... | value:https://api.github.com/repos/huggingface/datasets/issues/8352/comments | value:PR_kwDODunzps71TFA9 | value:closed | value:2 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8352", "html_url": "https://github.com/huggingface/datasets/pull/8352", "diff_url": "https://github.com/huggingface/datasets/pull/8352.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8352.patch", "merged_at": "2026-07-23T17:32:24Z"} | value:2026-07-23T17:35:14Z | value:https://api.github.com/repos/huggingface/datasets/issues/8352/labels{/name} | value:8352 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | value:False | true | |||||||||
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`NumpyArrowExtractor._arrow_array_to_numpy` (used by `Dataset.with_format("numpy")`) promotes a flat, homogeneous numeric column to `dtype=object` when the column contains nulls, but only for `float64`/`int64` columns. A `float32` column is returned as a numeric array. The result is a silent... | value:https://api.github.com/repos/huggingface/datasets/issues/8351/comments | value:I_kwDODunzps8AAAABJ33lPg | value:closed | value:0 | value:2026-07-23T17:32:25Z | value:https://api.github.com/repos/huggingface/datasets/issues/8351/labels{/name} | value:8351 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | true | ||||||||
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- fully validate each Arrow IPC record batch before converting it to a table
- reject malformed array offsets at the ingestion boundary
- add a safe regression fixture that is accepted by structural validation but rejected by full validation
`pa.Table.from_batches` does not perform full record batch ... | value:https://api.github.com/repos/huggingface/datasets/issues/8350/comments | value:PR_kwDODunzps70uU75 | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8350", "html_url": "https://github.com/huggingface/datasets/pull/8350", "diff_url": "https://github.com/huggingface/datasets/pull/8350.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8350.patch", "merged_at": "2026-07-22T13:26:35Z"} | value:2026-07-22T13:26:37Z | value:https://api.github.com/repos/huggingface/datasets/issues/8350/labels{/name} | value:8350 | json:{"login": "XciD", "id": 6586344, "node_id": "MDQ6VXNlcjY1ODYzNDQ=", "avatar_url": "https://avatars.githubusercontent.com/u/6586344?v=4", "gravatar_id": "", "url": "https://api.github.com/users/XciD", "html_url": "https://github.com/XciD", "followers_url": "https://api.github.com/users/XciD/followers", "following_u... | value:False | true | |||||||||
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`require_storage_embed` decides whether a (possibly nested) feature needs its data embedded into storage. For nested features it dispatches to the wrong helper and can report the wrong answer.
### Root cause
The recursive branches call `require_storage_cast` instead of recursing into `require_stora... | value:https://api.github.com/repos/huggingface/datasets/issues/8349/comments | value:PR_kwDODunzps70eZSn | value:closed | value:3 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8349", "html_url": "https://github.com/huggingface/datasets/pull/8349", "diff_url": "https://github.com/huggingface/datasets/pull/8349.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8349.patch", "merged_at": "2026-07-22T18:37:05Z"} | value:2026-07-28T16:08:34Z | value:https://api.github.com/repos/huggingface/datasets/issues/8349/labels{/name} | value:8349 | json:{"login": "vineethsaivs", "id": 42468190, "node_id": "MDQ6VXNlcjQyNDY4MTkw", "avatar_url": "https://avatars.githubusercontent.com/u/42468190?v=4", "gravatar_id": "", "url": "https://api.github.com/users/vineethsaivs", "html_url": "https://github.com/vineethsaivs", "followers_url": "https://api.github.com/users/vin... | value:False | true | |||||||||
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This PR addresses the performance overhead during the data files pattern resolution phase by reusing the filesystem metadata that is already fetched by `fs.glob(..., detail=True)`. Previously, this metadata was discarded, requiring a subsequent and redundant `fs.info()` network call in `_get_single_o... | value:https://api.github.com/repos/huggingface/datasets/issues/8348/comments | value:PR_kwDODunzps70Q7yM | value:open | value:6 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8348", "html_url": "https://github.com/huggingface/datasets/pull/8348", "diff_url": "https://github.com/huggingface/datasets/pull/8348.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8348.patch", "merged_at": null} | value:2026-09-30T18:21:17Z | value:https://api.github.com/repos/huggingface/datasets/issues/8348/labels{/name} | value:8348 | json:{"login": "yuxin00j", "id": 255896926, "node_id": "U_kgDOD0CtXg", "avatar_url": "https://avatars.githubusercontent.com/u/255896926?v=4", "gravatar_id": "", "url": "https://api.github.com/users/yuxin00j", "html_url": "https://github.com/yuxin00j", "followers_url": "https://api.github.com/users/yuxin00j/followers", ... | value:False | true | |||||||||||
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This PR fixes two types of code quality issues:
1. **Typo fixes**: Correct "simulatenous" to "simultaneous" in 2 places in iterable_dataset.py
2. **Exception handling**: Replace `raise error`/`raise e` with bare `raise` to preserve original stack trace (2 places)
## Changes
- `src/datasets/iterable_d... | value:https://api.github.com/repos/huggingface/datasets/issues/8347/comments | value:PR_kwDODunzps70LL0_ | value:closed | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8347", "html_url": "https://github.com/huggingface/datasets/pull/8347", "diff_url": "https://github.com/huggingface/datasets/pull/8347.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8347.patch", "merged_at": null} | value:2026-07-25T13:28:24Z | value:https://api.github.com/repos/huggingface/datasets/issues/8347/labels{/name} | value:8347 | json:{"login": "lxcxjxhx", "id": 144213008, "node_id": "U_kgDOCJiEEA", "avatar_url": "https://avatars.githubusercontent.com/u/144213008?v=4", "gravatar_id": "", "url": "https://api.github.com/users/lxcxjxhx", "html_url": "https://github.com/lxcxjxhx", "followers_url": "https://api.github.com/users/lxcxjxhx/followers", ... | value:False | true | |||||||||
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`_combine_list_array_offsets_with_mask` (in `src/datasets/table.py`) rebuilds a list array's offsets with the null bitmap applied, using an `int32` null-fill:
```python
offsets = array.offsets
if array.null_count > 0:
offsets = pa.concat_arrays(
[
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WebDataset now re-raises `tarfile.ReadError` with the archive path (`{tar_path!r}`) in the message and the original error on `__cause__`, both while advancing the archive iterator and while rea... | value:https://api.github.com/repos/huggingface/datasets/issues/8345/comments | value:PR_kwDODunzps7zhv4Z | value:open | value:8 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8345", "html_url": "https://github.com/huggingface/datasets/pull/8345", "diff_url": "https://github.com/huggingface/datasets/pull/8345.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8345.patch", "merged_at": null} | value:2026-10-26T20:38:15Z | value:https://api.github.com/repos/huggingface/datasets/issues/8345/labels{/name} | value:8345 | json:{"login": "sankalpsthakur", "id": 31366524, "node_id": "MDQ6VXNlcjMxMzY2NTI0", "avatar_url": "https://avatars.githubusercontent.com/u/31366524?v=4", "gravatar_id": "", "url": "https://api.github.com/users/sankalpsthakur", "html_url": "https://github.com/sankalpsthakur", "followers_url": "https://api.github.com/use... | value:False | true | |||||||||||
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`Dataset.to_pandas()` returned the raw Arrow storage strings for `Json()` feature columns, while every other in-memory export path decodes them. `to_dict()`, `to_list()`, `to_json()` and `with_format("pandas")` all apply `get_json_field_paths_from_feature` + `json_decode_field`; `to_pand... | value:https://api.github.com/repos/huggingface/datasets/issues/8344/comments | value:PR_kwDODunzps7zck9T | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8344", "html_url": "https://github.com/huggingface/datasets/pull/8344", "diff_url": "https://github.com/huggingface/datasets/pull/8344.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8344.patch", "merged_at": "2026-07-24T13:19:07Z"} | value:2026-07-25T12:11:29Z | value:https://api.github.com/repos/huggingface/datasets/issues/8344/labels{/name} | value:8344 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | value:False | true | |||||||||
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`Dataset.to_pandas()` returns the raw Arrow storage strings for `Json()` feature columns, while every other in-memory export path decodes them to Python objects. `to_dict()`, `to_list()`, `to_json()` and `with_format("pandas")` all run `get_json_field_paths_from_feature` + `json_decode_field... | value:https://api.github.com/repos/huggingface/datasets/issues/8343/comments | value:I_kwDODunzps8AAAABJU4jRg | value:closed | value:0 | value:2026-07-24T13:19:08Z | value:https://api.github.com/repos/huggingface/datasets/issues/8343/labels{/name} | value:8343 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | true | ||||||||
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### Root cause
`HorizontallyConcatenatedMultiSourcesExamplesIterable._iter_arrow` accumulates the concatenated batch with:
```python
for name, col in zip(table.column_names, table.columns):
new_pa_table = pa_table.append_column(name, col)
```
`pa_table` here is the loop variable that leaked fr... | value:https://api.github.com/repos/huggingface/datasets/issues/8342/comments | value:PR_kwDODunzps7zTJaN | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8342", "html_url": "https://github.com/huggingface/datasets/pull/8342", "diff_url": "https://github.com/huggingface/datasets/pull/8342.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8342.patch", "merged_at": "2026-07-22T18:35:30Z"} | value:2026-07-22T18:44:49Z | value:https://api.github.com/repos/huggingface/datasets/issues/8342/labels{/name} | value:8342 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | value:False | true | |||||||||
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The Arrow fast path of horizontal concatenation (`concatenate_datasets([...], axis=1)` consumed through `.with_format("arrow")`, or any Arrow/tensor consumer) drops the columns of the first source. The plain-Python path is correct; only the Arrow path diverges.
`HorizontallyConcatenatedMult... | value:https://api.github.com/repos/huggingface/datasets/issues/8341/comments | value:I_kwDODunzps8AAAABJR6Akw | value:closed | value:1 | value:2026-07-22T18:35:31Z | value:https://api.github.com/repos/huggingface/datasets/issues/8341/labels{/name} | value:8341 | json:{"login": "ebarkhordar", "id": 22658149, "node_id": "MDQ6VXNlcjIyNjU4MTQ5", "avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ebarkhordar", "html_url": "https://github.com/ebarkhordar", "followers_url": "https://api.github.com/users/ebarkh... | true | ||||||||
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## What does this PR do?
Makes `Dataset` optionally generic so its column types can be specified in a
typehint, similar to how `torch.utils.data.DataLoader[T]` works today (as
requested in the issue).
Before, the only way to document a dataset's columns was a docstring comment:
```python
from dat... | value:https://api.github.com/repos/huggingface/datasets/issues/8340/comments | value:PR_kwDODunzps7y1YDI | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8340", "html_url": "https://github.com/huggingface/datasets/pull/8340", "diff_url": "https://github.com/huggingface/datasets/pull/8340.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8340.patch", "merged_at": null} | value:2026-07-17T05:58:24Z | value:https://api.github.com/repos/huggingface/datasets/issues/8340/labels{/name} | value:8340 | json:{"login": "RudrenduPaul", "id": 38769913, "node_id": "MDQ6VXNlcjM4NzY5OTEz", "avatar_url": "https://avatars.githubusercontent.com/u/38769913?v=4", "gravatar_id": "", "url": "https://api.github.com/users/RudrenduPaul", "html_url": "https://github.com/RudrenduPaul", "followers_url": "https://api.github.com/users/Rud... | value:False | true | |||||||||||
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As discussed in the issue, the OOM in `Dataset.from_pandas` comes from `generate_fingerprint`, not from the Arrow conversion. Fingerprinting hashes `dataset.__dict__`, and the underlying `pa.Table` (and the `InMemoryTable` wrapping it) pickles chunk-by-chunk, so the serialized size and the hashing... | value:https://api.github.com/repos/huggingface/datasets/issues/8339/comments | value:PR_kwDODunzps7yqz1j | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8339", "html_url": "https://github.com/huggingface/datasets/pull/8339", "diff_url": "https://github.com/huggingface/datasets/pull/8339.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8339.patch", "merged_at": "2026-07-22T17:28:50Z"} | value:2026-07-22T17:28:50Z | value:https://api.github.com/repos/huggingface/datasets/issues/8339/labels{/name} | value:8339 | json:{"login": "SuryanshSS1011", "id": 159204949, "node_id": "U_kgDOCX1GVQ", "avatar_url": "https://avatars.githubusercontent.com/u/159204949?v=4", "gravatar_id": "", "url": "https://api.github.com/users/SuryanshSS1011", "html_url": "https://github.com/SuryanshSS1011", "followers_url": "https://api.github.com/users/Sur... | value:False | true | |||||||||
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Currently, the dataset cache fingerprints rely entirely on the `ETag`/`etag`/`mtime` metadata fetched during `fs.info()`. If a file's byte size changes on the remote end—and the remote backend fails to reliably update the ETag—the dataset fingerprint stays improperly static. This leads to insidiou... | value:https://api.github.com/repos/huggingface/datasets/issues/8338/comments | value:PR_kwDODunzps7yVTjf | value:open | value:3 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8338", "html_url": "https://github.com/huggingface/datasets/pull/8338", "diff_url": "https://github.com/huggingface/datasets/pull/8338.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8338.patch", "merged_at": null} | value:2026-09-18T02:57:44Z | value:https://api.github.com/repos/huggingface/datasets/issues/8338/labels{/name} | value:8338 | json:{"login": "yuxin00j", "id": 255896926, "node_id": "U_kgDOD0CtXg", "avatar_url": "https://avatars.githubusercontent.com/u/255896926?v=4", "gravatar_id": "", "url": "https://api.github.com/users/yuxin00j", "html_url": "https://github.com/yuxin00j", "followers_url": "https://api.github.com/users/yuxin00j/followers", ... | value:False | true | |||||||||||
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The WebDataset section of `video_dataset.mdx` only shows one media file per sample. This adds an example where a sample has several files of the same type, such as a base video and a pose video in a sign-language dataset. As confirmed in the issue, a period-separated name before the extension keeps e... | value:https://api.github.com/repos/huggingface/datasets/issues/8336/comments | value:PR_kwDODunzps7yIFxi | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8336", "html_url": "https://github.com/huggingface/datasets/pull/8336", "diff_url": "https://github.com/huggingface/datasets/pull/8336.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8336.patch", "merged_at": null} | value:2026-11-02T10:49:53Z | value:https://api.github.com/repos/huggingface/datasets/issues/8336/labels{/name} | value:8336 | json:{"login": "pctablet505", "id": 55033230, "node_id": "MDQ6VXNlcjU1MDMzMjMw", "avatar_url": "https://avatars.githubusercontent.com/u/55033230?v=4", "gravatar_id": "", "url": "https://api.github.com/users/pctablet505", "html_url": "https://github.com/pctablet505", "followers_url": "https://api.github.com/users/pctabl... | value:False | true | |||||||||||
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`concatenate_datasets([...], axis=1)` over arrow-backed `IterableDataset`s (e.g. from `.to_iterable_dataset()`) silently drops the **first** dataset's columns and duplicates the **last** dataset's column.
In `HorizontallyConcatenatedMultiSourcesExamplesIterable._iter_arrow`, the merged table is built by ... | value:https://api.github.com/repos/huggingface/datasets/issues/8335/comments | value:PR_kwDODunzps7yCdSS | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8335", "html_url": "https://github.com/huggingface/datasets/pull/8335", "diff_url": "https://github.com/huggingface/datasets/pull/8335.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8335.patch", "merged_at": null} | value:2026-07-15T14:33:35Z | value:https://api.github.com/repos/huggingface/datasets/issues/8335/labels{/name} | value:8335 | json:{"login": "Vedant-Agarwal", "id": 43557509, "node_id": "MDQ6VXNlcjQzNTU3NTA5", "avatar_url": "https://avatars.githubusercontent.com/u/43557509?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Vedant-Agarwal", "html_url": "https://github.com/Vedant-Agarwal", "followers_url": "https://api.github.com/use... | value:False | true | |||||||||
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It replaces `list[PathLike]` with `Sequence[PathLike]`. Since `list` is invariant and `Sequence` is covariant, this prevents u... | value:https://api.github.com/repos/huggingface/datasets/issues/8334/comments | value:PR_kwDODunzps7x4y28 | value:open | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8334", "html_url": "https://github.com/huggingface/datasets/pull/8334", "diff_url": "https://github.com/huggingface/datasets/pull/8334.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8334.patch", "merged_at": null} | value:2026-10-01T06:36:26Z | value:https://api.github.com/repos/huggingface/datasets/issues/8334/labels{/name} | value:8334 | json:{"login": "wasim-builds", "id": 108329802, "node_id": "U_kgDOBnT7Sg", "avatar_url": "https://avatars.githubusercontent.com/u/108329802?v=4", "gravatar_id": "", "url": "https://api.github.com/users/wasim-builds", "html_url": "https://github.com/wasim-builds", "followers_url": "https://api.github.com/users/wasim-bui... | value:False | true | |||||||||||
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`Dataset.to_dict(batch_size=..., batched=True)` silently ignores both arguments and always returns the full dict, even though its signature, docstring ("Set to `True` to return a generator that yields the dataset as batches"), and `-> Union[dict, Iterator[dict]]` return type all promise bat... | value:https://api.github.com/repos/huggingface/datasets/issues/8333/comments | value:PR_kwDODunzps7xons8 | value:closed | value:3 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8333", "html_url": "https://github.com/huggingface/datasets/pull/8333", "diff_url": "https://github.com/huggingface/datasets/pull/8333.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8333.patch", "merged_at": "2026-07-23T15:41:56Z"} | value:2026-07-23T15:41:56Z | value:https://api.github.com/repos/huggingface/datasets/issues/8333/labels{/name} | value:8333 | json:{"login": "vineethsaivs", "id": 42468190, "node_id": "MDQ6VXNlcjQyNDY4MTkw", "avatar_url": "https://avatars.githubusercontent.com/u/42468190?v=4", "gravatar_id": "", "url": "https://api.github.com/users/vineethsaivs", "html_url": "https://github.com/vineethsaivs", "followers_url": "https://api.github.com/users/vin... | value:False | true | |||||||||
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`IterableDataset.map(fn, batched=True)` can silently drop or misalign rows when the mapping function changes the batch's row count but does not re-emit every retained input column.
In `MappedExamplesIterable._iter`, `prepare_outputs` merges the batch with `transformed_inputs = {**inputs, **processed_... | value:https://api.github.com/repos/huggingface/datasets/issues/8332/comments | value:PR_kwDODunzps7xmdbe | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8332", "html_url": "https://github.com/huggingface/datasets/pull/8332", "diff_url": "https://github.com/huggingface/datasets/pull/8332.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8332.patch", "merged_at": "2026-07-22T18:36:27Z"} | value:2026-07-22T18:36:27Z | value:https://api.github.com/repos/huggingface/datasets/issues/8332/labels{/name} | value:8332 | json:{"login": "sohumt123", "id": 208212517, "node_id": "U_kgDODGkSJQ", "avatar_url": "https://avatars.githubusercontent.com/u/208212517?v=4", "gravatar_id": "", "url": "https://api.github.com/users/sohumt123", "html_url": "https://github.com/sohumt123", "followers_url": "https://api.github.com/users/sohumt123/follower... | value:False | true | |||||||||
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The entire datasets-server.huggingface.co backend (the dataset-viewer API) is
returning 503 Service Temporarily Unavailable on every route I've tried, not
just one endpoint. It reproduces on public datasets with no auth token, so it
doesn't appear to be account- or dataset-specific. huggingf... | value:https://api.github.com/repos/huggingface/datasets/issues/8331/comments | value:I_kwDODunzps8AAAABIxjmTA | value:closed | value:2 | value:2026-07-17T12:09:35Z | value:https://api.github.com/repos/huggingface/datasets/issues/8331/labels{/name} | value:8331 | json:{"login": "ChristianDenniss", "id": 166155393, "node_id": "U_kgDOCedUgQ", "avatar_url": "https://avatars.githubusercontent.com/u/166155393?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ChristianDenniss", "html_url": "https://github.com/ChristianDenniss", "followers_url": "https://api.github.com/use... | true | ||||||||
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Hello!
I want to report a bug on the datasets viewer and data studio pages. I have attempted to access it on various datasets from various devices and it will not let me view the dataset this way. I have tried restarting, login in and out but to no success. I use Hugging Face as a reposit... | value:https://api.github.com/repos/huggingface/datasets/issues/8330/comments | value:I_kwDODunzps8AAAABIxG3Ww | value:closed | value:1 | value:2026-07-24T15:26:15Z | value:https://api.github.com/repos/huggingface/datasets/issues/8330/labels{/name} | value:8330 | json:{"login": "Taryn-Cail", "id": 165508968, "node_id": "U_kgDOCd13aA", "avatar_url": "https://avatars.githubusercontent.com/u/165508968?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Taryn-Cail", "html_url": "https://github.com/Taryn-Cail", "followers_url": "https://api.github.com/users/Taryn-Cail/foll... | true | ||||||||
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Replaces `list[T]` with `Sequence[T]` in function parameter type annotations across `arrow_dataset.py`, `dataset_dict.py`, and `iterable_dataset.py`.
The built-in `list` is invariant in its type parameter, so passing a `List[str]` where `list[PathLike]` is expected causes a mypy error. `Sequence` i... | value:https://api.github.com/repos/huggingface/datasets/issues/8329/comments | value:PR_kwDODunzps7xfhUD | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8329", "html_url": "https://github.com/huggingface/datasets/pull/8329", "diff_url": "https://github.com/huggingface/datasets/pull/8329.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8329.patch", "merged_at": null} | value:2026-07-14T10:16:04Z | value:https://api.github.com/repos/huggingface/datasets/issues/8329/labels{/name} | value:8329 | json:{"login": "gautamkishore", "id": 3015456, "node_id": "MDQ6VXNlcjMwMTU0NTY=", "avatar_url": "https://avatars.githubusercontent.com/u/3015456?v=4", "gravatar_id": "", "url": "https://api.github.com/users/gautamkishore", "html_url": "https://github.com/gautamkishore", "followers_url": "https://api.github.com/users/ga... | value:False | true | |||||||||||
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I'm unable to stream datasets from the Hugging Face Hub. The issue affects both public datasets (e.g. beans) and gated datasets (ILSVRC/imagenet-1k).
The failure occurs before any examples are yielded. The request is redirected to the Xet CDN (xet-bridge-us) and fails with:
```
403 Forbidd... | value:https://api.github.com/repos/huggingface/datasets/issues/8328/comments | value:I_kwDODunzps8AAAABIvhOLA | value:closed | value:11 | value:2026-07-24T15:26:24Z | value:https://api.github.com/repos/huggingface/datasets/issues/8328/labels{/name} | value:8328 | json:{"login": "mahmoud-mannes", "id": 223726608, "node_id": "U_kgDODVXMEA", "avatar_url": "https://avatars.githubusercontent.com/u/223726608?v=4", "gravatar_id": "", "url": "https://api.github.com/users/mahmoud-mannes", "html_url": "https://github.com/mahmoud-mannes", "followers_url": "https://api.github.com/users/mah... | true | ||||||||
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`Dataset.from_pandas` memory usage scales with the chunk count of the backing Arrow array (around 1 MB per chunk).
`Dataset.shuffle()` followed by `to_pandas()` produces string columns with one chunk per row, so a 25k-row DataFrame holding ~32 MB of text allocates ~30 GB on the way back th... | value:https://api.github.com/repos/huggingface/datasets/issues/8327/comments | value:I_kwDODunzps8AAAABIoqexg | value:closed | value:3 | value:2026-07-22T17:28:51Z | value:https://api.github.com/repos/huggingface/datasets/issues/8327/labels{/name} | value:8327 | json:{"login": "nenadom", "id": 7107362, "node_id": "MDQ6VXNlcjcxMDczNjI=", "avatar_url": "https://avatars.githubusercontent.com/u/7107362?v=4", "gravatar_id": "", "url": "https://api.github.com/users/nenadom", "html_url": "https://github.com/nenadom", "followers_url": "https://api.github.com/users/nenadom/followers", ... | true | ||||||||
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Replaces deprecated with the modern in the image preprocessing example in . | value:https://api.github.com/repos/huggingface/datasets/issues/8326/comments | value:PR_kwDODunzps7w78O8 | value:closed | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8326", "html_url": "https://github.com/huggingface/datasets/pull/8326", "diff_url": "https://github.com/huggingface/datasets/pull/8326.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8326.patch", "merged_at": "2026-07-22T17:35:55Z"} | value:2026-07-22T17:35:55Z | value:https://api.github.com/repos/huggingface/datasets/issues/8326/labels{/name} | value:8326 | json:{"login": "gautamkishore", "id": 3015456, "node_id": "MDQ6VXNlcjMwMTU0NTY=", "avatar_url": "https://avatars.githubusercontent.com/u/3015456?v=4", "gravatar_id": "", "url": "https://api.github.com/users/gautamkishore", "html_url": "https://github.com/gautamkishore", "followers_url": "https://api.github.com/users/ga... | value:False | true | |||||||||
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### Vulnerability
The folder-based builders (`imagefolder`, `audiofolder`, `videofolder`, `pdffolder`) resolve each metadata row's `file_name` by joining it to the metadata file's directory with no containment check. A malicious dataset can set `file_name` to a `../`-traversal path or an absolute path... | value:https://api.github.com/repos/huggingface/datasets/issues/8325/comments | value:PR_kwDODunzps7w2Bma | value:closed | value:7 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8325", "html_url": "https://github.com/huggingface/datasets/pull/8325", "diff_url": "https://github.com/huggingface/datasets/pull/8325.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8325.patch", "merged_at": "2026-07-23T15:37:56Z"} | value:2026-07-23T15:37:56Z | value:https://api.github.com/repos/huggingface/datasets/issues/8325/labels{/name} | value:8325 | json:{"login": "Kaif10", "id": 57802881, "node_id": "MDQ6VXNlcjU3ODAyODgx", "avatar_url": "https://avatars.githubusercontent.com/u/57802881?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Kaif10", "html_url": "https://github.com/Kaif10", "followers_url": "https://api.github.com/users/Kaif10/followers", "f... | value:False | true | |||||||||
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reported via email on 9 June 2026 - no acknowledgement or response:
Package: datasets (PyPI). Affected file: src/datasets/packaged_modules/folder_based_builder/folder_based_builder.py
Affected Versions: confirmed on 5.0.0 (PyPI) and HEAD 63e103e.
CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I... | value:https://api.github.com/repos/huggingface/datasets/issues/8324/comments | value:I_kwDODunzps8AAAABIiJwaQ | value:closed | value:1 | value:2026-07-23T15:37:57Z | value:https://api.github.com/repos/huggingface/datasets/issues/8324/labels{/name} | value:8324 | json:{"login": "geo-chen", "id": 2404584, "node_id": "MDQ6VXNlcjI0MDQ1ODQ=", "avatar_url": "https://avatars.githubusercontent.com/u/2404584?v=4", "gravatar_id": "", "url": "https://api.github.com/users/geo-chen", "html_url": "https://github.com/geo-chen", "followers_url": "https://api.github.com/users/geo-chen/follower... | true | ||||||||
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`Dataset.rename_column` (singular) already rejects a new column name that collides with an
existing column:
```python
>>> ds.rename_column("foo", "bar") # "bar" already exists
ValueError: New column name bar already in the dataset. ...
```
`Dataset.rename_columns` (plural, dict-based) has no equivale... | value:https://api.github.com/repos/huggingface/datasets/issues/8323/comments | value:PR_kwDODunzps7wku51 | value:open | value:2 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8323", "html_url": "https://github.com/huggingface/datasets/pull/8323", "diff_url": "https://github.com/huggingface/datasets/pull/8323.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8323.patch", "merged_at": null} | value:2026-09-15T09:32:09Z | value:https://api.github.com/repos/huggingface/datasets/issues/8323/labels{/name} | value:8323 | json:{"login": "roli-lpci", "id": 244266141, "node_id": "U_kgDODo80nQ", "avatar_url": "https://avatars.githubusercontent.com/u/244266141?v=4", "gravatar_id": "", "url": "https://api.github.com/users/roli-lpci", "html_url": "https://github.com/roli-lpci", "followers_url": "https://api.github.com/users/roli-lpci/follower... | value:False | true | |||||||||||
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## Description
Changed type annotations from `list[PathLike]` to `ListLike[PathLike]` in
`from_csv`, `from_json`, `from_parquet`, and `from_text`.
`list` type hints are invariant — passing a `tuple` of paths fails mypy even
though it works fine at runtime. `ListLike` (defined in
`src/datasets/utils/typing.p... | value:https://api.github.com/repos/huggingface/datasets/issues/8322/comments | value:PR_kwDODunzps7whovv | value:open | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8322", "html_url": "https://github.com/huggingface/datasets/pull/8322", "diff_url": "https://github.com/huggingface/datasets/pull/8322.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8322.patch", "merged_at": null} | value:2026-07-22T14:08:44Z | value:https://api.github.com/repos/huggingface/datasets/issues/8322/labels{/name} | value:8322 | json:{"login": "N-S8990", "id": 76609223, "node_id": "MDQ6VXNlcjc2NjA5MjIz", "avatar_url": "https://avatars.githubusercontent.com/u/76609223?v=4", "gravatar_id": "", "url": "https://api.github.com/users/N-S8990", "html_url": "https://github.com/N-S8990", "followers_url": "https://api.github.com/users/N-S8990/followers"... | value:False | true | |||||||||||
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## Proposed Changes
- Updates features typing to use Sequence instead of List/Tuple in from_json and from_parquet parsing functions.
- Adds from_jsonl as an explicit wrapper to from_json for dataset creation, providing API symmetry with to_jsonl.
- Includes dedicated tests for the new from_jsonl alia... | value:https://api.github.com/repos/huggingface/datasets/issues/8321/comments | value:PR_kwDODunzps7wgZfn | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8321", "html_url": "https://github.com/huggingface/datasets/pull/8321", "diff_url": "https://github.com/huggingface/datasets/pull/8321.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8321.patch", "merged_at": null} | value:2026-07-11T10:24:56Z | value:https://api.github.com/repos/huggingface/datasets/issues/8321/labels{/name} | value:8321 | json:{"login": "2k33cse992574", "id": 169928786, "node_id": "U_kgDOCiDoUg", "avatar_url": "https://avatars.githubusercontent.com/u/169928786?v=4", "gravatar_id": "", "url": "https://api.github.com/users/2k33cse992574", "html_url": "https://github.com/2k33cse992574", "followers_url": "https://api.github.com/users/2k33cs... | value:False | true | |||||||||||
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Adds missing open-source community health files:
- **CHANGELOG.md** — Keep a Changelog format, Semantic Versioning
- **README.md** — contributor profile link
### Why
These files help contributors understand how to participate and set community expectations.
---
*[Mukller](https://github.... | value:https://api.github.com/repos/huggingface/datasets/issues/8320/comments | value:PR_kwDODunzps7wcTTb | value:closed | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8320", "html_url": "https://github.com/huggingface/datasets/pull/8320", "diff_url": "https://github.com/huggingface/datasets/pull/8320.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8320.patch", "merged_at": null} | value:2026-08-18T14:47:40Z | value:https://api.github.com/repos/huggingface/datasets/issues/8320/labels{/name} | value:8320 | json:{"login": "Mukller", "id": 168552591, "node_id": "U_kgDOCgvojw", "avatar_url": "https://avatars.githubusercontent.com/u/168552591?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Mukller", "html_url": "https://github.com/Mukller", "followers_url": "https://api.github.com/users/Mukller/followers", "fol... | value:False | true | |||||||||
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`IterableDataset._resolve_features()` crashes when a `map` function yields multi-dimensional numpy arrays:
```python
from datasets import Dataset
import numpy as np
ds = Dataset.from_dict({"a": [[[1, 2, 3], [1, 2, 3]]]}).to_iterable_dataset().map(lambda x: {"a": [np.array(x["a"])]})
ds._resolve_featu... | value:https://api.github.com/repos/huggingface/datasets/issues/8319/comments | value:PR_kwDODunzps7wX361 | value:open | value:2 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8319", "html_url": "https://github.com/huggingface/datasets/pull/8319", "diff_url": "https://github.com/huggingface/datasets/pull/8319.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8319.patch", "merged_at": null} | value:2026-11-05T23:39:07Z | value:https://api.github.com/repos/huggingface/datasets/issues/8319/labels{/name} | value:8319 | json:{"login": "vineethsaivs", "id": 42468190, "node_id": "MDQ6VXNlcjQyNDY4MTkw", "avatar_url": "https://avatars.githubusercontent.com/u/42468190?v=4", "gravatar_id": "", "url": "https://api.github.com/users/vineethsaivs", "html_url": "https://github.com/vineethsaivs", "followers_url": "https://api.github.com/users/vin... | value:False | true | |||||||||||
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`_interleave_map_style_datasets` (used by `interleave_datasets` for map-style `Dataset`s) builds the output index list in a **pure-Python `for`-loop, one iteration per output row**, when `probabilities` is given:
```python
for source_idx in iter_random_indices():
if bool_strategy_func(is_exhausted):... | value:https://api.github.com/repos/huggingface/datasets/issues/8318/comments | value:PR_kwDODunzps7wBLK6 | value:closed | value:6 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8318", "html_url": "https://github.com/huggingface/datasets/pull/8318", "diff_url": "https://github.com/huggingface/datasets/pull/8318.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8318.patch", "merged_at": "2026-09-28T10:04:32Z"} | value:2026-09-28T10:04:32Z | value:https://api.github.com/repos/huggingface/datasets/issues/8318/labels{/name} | value:8318 | json:{"login": "saforem2", "id": 5234251, "node_id": "MDQ6VXNlcjUyMzQyNTE=", "avatar_url": "https://avatars.githubusercontent.com/u/5234251?v=4", "gravatar_id": "", "url": "https://api.github.com/users/saforem2", "html_url": "https://github.com/saforem2", "followers_url": "https://api.github.com/users/saforem2/follower... | value:False | true | |||||||||
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Fixes #7037.
`Dataset.to_json(lines=False)` raised `NotImplementedError` (and before the guard was added, silently produced _invalid_ JSON) whenever `batch_size < num_rows` — i.e., the default case for any dataset larger than `DEFAULT_MAX_BATCH_SIZE` (1000 rows).
**Root cause:** Each batch was seria... | value:https://api.github.com/repos/huggingface/datasets/issues/8317/comments | value:PR_kwDODunzps7wA7r8 | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8317", "html_url": "https://github.com/huggingface/datasets/pull/8317", "diff_url": "https://github.com/huggingface/datasets/pull/8317.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8317.patch", "merged_at": null} | value:2026-07-24T03:12:05Z | value:https://api.github.com/repos/huggingface/datasets/issues/8317/labels{/name} | value:8317 | json:{"login": "sridhar-3009", "id": 117087864, "node_id": "U_kgDOBvqeeA", "avatar_url": "https://avatars.githubusercontent.com/u/117087864?v=4", "gravatar_id": "", "url": "https://api.github.com/users/sridhar-3009", "html_url": "https://github.com/sridhar-3009", "followers_url": "https://api.github.com/users/sridhar-3... | value:False | true | |||||||||||
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`IterableDataset.add_column` delegates to `map` but never propagates the schema. After the call, `dataset.features` is `None` even when the original dataset had a typed schema, silently breaking all downstream code that inspects features.
## Root cause
The implementation is a one-liner:
```python
retur... | value:https://api.github.com/repos/huggingface/datasets/issues/8316/comments | value:PR_kwDODunzps7wAxOj | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8316", "html_url": "https://github.com/huggingface/datasets/pull/8316", "diff_url": "https://github.com/huggingface/datasets/pull/8316.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8316.patch", "merged_at": null} | value:2026-07-25T18:47:12Z | value:https://api.github.com/repos/huggingface/datasets/issues/8316/labels{/name} | value:8316 | json:{"login": "sridhar-3009", "id": 117087864, "node_id": "U_kgDOBvqeeA", "avatar_url": "https://avatars.githubusercontent.com/u/117087864?v=4", "gravatar_id": "", "url": "https://api.github.com/users/sridhar-3009", "html_url": "https://github.com/sridhar-3009", "followers_url": "https://api.github.com/users/sridhar-3... | value:False | true | |||||||||||
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```python
>>> from datasets.utils.py_utils ... | value:https://api.github.com/repos/huggingface/datasets/issues/8315/comments | value:PR_kwDODunzps7v6TJQ | value:open | value:2 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8315", "html_url": "https://github.com/huggingface/datasets/pull/8315", "diff_url": "https://github.com/huggingface/datasets/pull/8315.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8315.patch", "merged_at": null} | value:2026-09-04T17:53:57Z | value:https://api.github.com/repos/huggingface/datasets/issues/8315/labels{/name} | value:8315 | json:{"login": "Sreekant13", "id": 60787859, "node_id": "MDQ6VXNlcjYwNzg3ODU5", "avatar_url": "https://avatars.githubusercontent.com/u/60787859?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Sreekant13", "html_url": "https://github.com/Sreekant13", "followers_url": "https://api.github.com/users/Sreekant1... | value:False | true | |||||||||||
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to_json(lines=False) concatenated batch JSON arrays directly (like [...][...][...]), which is invalid JSON. Fixed by stripping outer brackets from each batch with orient=records and wrapping in a single array. | value:https://api.github.com/repos/huggingface/datasets/issues/8314/comments | value:PR_kwDODunzps7v46i1 | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8314", "html_url": "https://github.com/huggingface/datasets/pull/8314", "diff_url": "https://github.com/huggingface/datasets/pull/8314.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8314.patch", "merged_at": null} | value:2026-07-09T19:55:29Z | value:https://api.github.com/repos/huggingface/datasets/issues/8314/labels{/name} | value:8314 | json:{"login": "Functionhx", "id": 172989722, "node_id": "U_kgDOCk-dGg", "avatar_url": "https://avatars.githubusercontent.com/u/172989722?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Functionhx", "html_url": "https://github.com/Functionhx", "followers_url": "https://api.github.com/users/Functionhx/foll... | value:False | true | |||||||||||
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Parsing a hermes-format agent trace whose `started_at` is expressed in milliseconds crashes with `OSError: [Errno 22] Invalid argument`.
## The bug
`src/datasets/packaged_modules/json/json.py` normalizes `started_at` before feeding it to `datetime.fromtimestamp` (which expects **seconds**), using a ... | value:https://api.github.com/repos/huggingface/datasets/issues/8313/comments | value:PR_kwDODunzps7vlZFI | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8313", "html_url": "https://github.com/huggingface/datasets/pull/8313", "diff_url": "https://github.com/huggingface/datasets/pull/8313.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8313.patch", "merged_at": null} | value:2026-11-04T06:21:44Z | value:https://api.github.com/repos/huggingface/datasets/issues/8313/labels{/name} | value:8313 | json:{"login": "DaoyuanLi2816", "id": 94409450, "node_id": "U_kgDOBaCS6g", "avatar_url": "https://avatars.githubusercontent.com/u/94409450?v=4", "gravatar_id": "", "url": "https://api.github.com/users/DaoyuanLi2816", "html_url": "https://github.com/DaoyuanLi2816", "followers_url": "https://api.github.com/users/DaoyuanL... | value:False | true | |||||||||
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`Dataset.take(n)` is implemented as `self.select(range(n))`, so when `n` is larger than the dataset length it raises `IndexError: Index N out of range for dataset of size M` instead of returning the whole dataset. This is inconsistent with `IterableDataset.take`, which clamps and returns all avail... | value:https://api.github.com/repos/huggingface/datasets/issues/8312/comments | value:PR_kwDODunzps7vLR6W | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8312", "html_url": "https://github.com/huggingface/datasets/pull/8312", "diff_url": "https://github.com/huggingface/datasets/pull/8312.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8312.patch", "merged_at": "2026-11-06T11:16:05Z"} | value:2026-11-06T11:16:05Z | value:https://api.github.com/repos/huggingface/datasets/issues/8312/labels{/name} | value:8312 | json:{"login": "vidigoat", "id": 219086731, "node_id": "U_kgDODQ7_iw", "avatar_url": "https://avatars.githubusercontent.com/u/219086731?v=4", "gravatar_id": "", "url": "https://api.github.com/users/vidigoat", "html_url": "https://github.com/vidigoat", "followers_url": "https://api.github.com/users/vidigoat/followers", ... | value:False | true | |||||||||
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Fixes #6879.
`Dataset.map(fn, batched=True)` silently truncates the dataset to **0 rows** (instead of raising) when the mapping function empties an *existing* column while another column stays non-empty.
### Reproducer (from the issue)
```python
import datasets
data = datasets.Dataset... | value:https://api.github.com/repos/huggingface/datasets/issues/8311/comments | value:PR_kwDODunzps7vDKY3 | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8311", "html_url": "https://github.com/huggingface/datasets/pull/8311", "diff_url": "https://github.com/huggingface/datasets/pull/8311.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8311.patch", "merged_at": null} | value:2026-07-07T23:32:30Z | value:https://api.github.com/repos/huggingface/datasets/issues/8311/labels{/name} | value:8311 | json:{"login": "florian6973", "id": 70778912, "node_id": "MDQ6VXNlcjcwNzc4OTEy", "avatar_url": "https://avatars.githubusercontent.com/u/70778912?v=4", "gravatar_id": "", "url": "https://api.github.com/users/florian6973", "html_url": "https://github.com/florian6973", "followers_url": "https://api.github.com/users/floria... | value:False | true | |||||||||||
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### Problem
`patch_submodule` reads the builtins through `globals()["__builtins__"]`:
```python
elif target_attr in globals()["__builtins__"]: # if it's a builtin like "open"
self.original[target_attr] = globals()["__builtins__"][target_attr]
```
The value of a module's `__builtins__` globa... | value:https://api.github.com/repos/huggingface/datasets/issues/8310/comments | value:PR_kwDODunzps7ueW6y | value:open | value:2 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8310", "html_url": "https://github.com/huggingface/datasets/pull/8310", "diff_url": "https://github.com/huggingface/datasets/pull/8310.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8310.patch", "merged_at": null} | value:2026-11-05T23:39:00Z | value:https://api.github.com/repos/huggingface/datasets/issues/8310/labels{/name} | value:8310 | json:{"login": "vineethsaivs", "id": 42468190, "node_id": "MDQ6VXNlcjQyNDY4MTkw", "avatar_url": "https://avatars.githubusercontent.com/u/42468190?v=4", "gravatar_id": "", "url": "https://api.github.com/users/vineethsaivs", "html_url": "https://github.com/vineethsaivs", "followers_url": "https://api.github.com/users/vin... | value:False | true | |||||||||||
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🤖 Generated with [Claude Code](https://claude.com/claude-code) | value:https://api.github.com/repos/huggingface/datasets/issues/8309/comments | value:PR_kwDODunzps7uS_TH | value:open | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8309", "html_url": "https://github.com/huggingface/datasets/pull/8309", "diff_url": "https://github.com/huggingface/datasets/pull/8309.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8309.patch", "merged_at": null} | value:2026-07-06T13:21:54Z | value:https://api.github.com/repos/huggingface/datasets/issues/8309/labels{/name} | value:8309 | json:{"login": "mishig25", "id": 11827707, "node_id": "MDQ6VXNlcjExODI3NzA3", "avatar_url": "https://avatars.githubusercontent.com/u/11827707?v=4", "gravatar_id": "", "url": "https://api.github.com/users/mishig25", "html_url": "https://github.com/mishig25", "followers_url": "https://api.github.com/users/mishig25/follow... | value:False | true | |||||||||||
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## Description
For a streaming `IterableDataset`, calling `load_state_dict()` and then continuing to iterate leaves `state_dict()` frozen at the initial position (`shard_idx=0`, `shard_example_idx=0`). Reading resumes correctly the first time, but the tracked state never advances again.
This causes a second co... | value:https://api.github.com/repos/huggingface/datasets/issues/8308/comments | value:I_kwDODunzps8AAAABHy6FNw | value:closed | value:3 | value:2026-07-24T07:58:49Z | value:https://api.github.com/repos/huggingface/datasets/issues/8308/labels{/name} | value:8308 | json:{"login": "francesco-bertolotti", "id": 205762612, "node_id": "U_kgDODEOwNA", "avatar_url": "https://avatars.githubusercontent.com/u/205762612?v=4", "gravatar_id": "", "url": "https://api.github.com/users/francesco-bertolotti", "html_url": "https://github.com/francesco-bertolotti", "followers_url": "https://api.gi... | true | ||||||||
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This PR improves the error message when the optional `tsfile` dependency is unavailable.
Currently, loading a TSFile dataset without `tsfile` installed raises a raw:
ModuleNotFoundError: No module named 'tsfile'
This change raises a clearer ImportError instead:
ImportError: To supp... | value:https://api.github.com/repos/huggingface/datasets/issues/8307/comments | value:PR_kwDODunzps7uIqj_ | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8307", "html_url": "https://github.com/huggingface/datasets/pull/8307", "diff_url": "https://github.com/huggingface/datasets/pull/8307.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8307.patch", "merged_at": null} | value:2026-07-06T00:12:07Z | value:https://api.github.com/repos/huggingface/datasets/issues/8307/labels{/name} | value:8307 | json:{"login": "Pranjalitem189", "id": 47625583, "node_id": "MDQ6VXNlcjQ3NjI1NTgz", "avatar_url": "https://avatars.githubusercontent.com/u/47625583?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Pranjalitem189", "html_url": "https://github.com/Pranjalitem189", "followers_url": "https://api.github.com/use... | value:False | true | |||||||||||
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`Dataset.add_column`'s signature is `(name, column, new_fingerprint=None, feature=None)`, but:
- its own docstring documents the third argument as `feature` (not `new_fingerprint`), and
- every sibling `@fingerprint_transform` method keeps `new_fingerprint` as the **last** parameter (e.g. `cast_column(... | value:https://api.github.com/repos/huggingface/datasets/issues/8306/comments | value:PR_kwDODunzps7uH7t7 | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8306", "html_url": "https://github.com/huggingface/datasets/pull/8306", "diff_url": "https://github.com/huggingface/datasets/pull/8306.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8306.patch", "merged_at": null} | value:2026-07-05T22:56:14Z | value:https://api.github.com/repos/huggingface/datasets/issues/8306/labels{/name} | value:8306 | json:{"login": "gaurav0107", "id": 12824278, "node_id": "MDQ6VXNlcjEyODI0Mjc4", "avatar_url": "https://avatars.githubusercontent.com/u/12824278?v=4", "gravatar_id": "", "url": "https://api.github.com/users/gaurav0107", "html_url": "https://github.com/gaurav0107", "followers_url": "https://api.github.com/users/gaurav010... | value:False | true | |||||||||||
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A structured dataset proposal introducing a Turkish syntactic structure benchmark designed for evaluating LLMs on fine-grained grammatical reasoning in a morphologically rich language.
Current NLP datasets in Hugging Face focus heavily on surface-level semantic tasks or English-centric bench... | value:https://api.github.com/repos/huggingface/datasets/issues/8302/comments | value:I_kwDODunzps8AAAABHmFpKA | value:open | value:8 | value:2026-08-27T07:40:40Z | value:https://api.github.com/repos/huggingface/datasets/issues/8302/labels{/name} | value:8302 | json:{"login": "nane100503-gif", "id": 279460174, "node_id": "U_kgDOEKg5Tg", "avatar_url": "https://avatars.githubusercontent.com/u/279460174?v=4", "gravatar_id": "", "url": "https://api.github.com/users/nane100503-gif", "html_url": "https://github.com/nane100503-gif", "followers_url": "https://api.github.com/users/nan... | true | |||||||||||
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- `TypeError: argument 'storage_options': 'None' is not an instance of 'str'` because "token": None is not supported in storage_options
- download_config.storage_options was empty and therefore the token for private datasets was not passed to lance | value:https://api.github.com/repos/huggingface/datasets/issues/8301/comments | value:PR_kwDODunzps7tmuV3 | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8301", "html_url": "https://github.com/huggingface/datasets/pull/8301", "diff_url": "https://github.com/huggingface/datasets/pull/8301.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8301.patch", "merged_at": "2026-07-03T14:17:38Z"} | value:2026-07-03T14:17:40Z | value:https://api.github.com/repos/huggingface/datasets/issues/8301/labels{/name} | value:8301 | json:{"login": "lhoestq", "id": 42851186, "node_id": "MDQ6VXNlcjQyODUxMTg2", "avatar_url": "https://avatars.githubusercontent.com/u/42851186?v=4", "gravatar_id": "", "url": "https://api.github.com/users/lhoestq", "html_url": "https://github.com/lhoestq", "followers_url": "https://api.github.com/users/lhoestq/followers"... | value:False | true | |||||||||
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## Problem
`MetadataConfigs._from_exported_parquet_files_and_dataset_infos()` groups the exported parquet files with `itertools.groupby(exported_parquet_files, itemgetter("config"))`. `groupby` only groups **consecutive** equal keys, but the result is built as a dict keyed by config name:
```python... | value:https://api.github.com/repos/huggingface/datasets/issues/8299/comments | value:PR_kwDODunzps7tOQW5 | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8299", "html_url": "https://github.com/huggingface/datasets/pull/8299", "diff_url": "https://github.com/huggingface/datasets/pull/8299.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8299.patch", "merged_at": null} | value:2026-07-02T16:36:11Z | value:https://api.github.com/repos/huggingface/datasets/issues/8299/labels{/name} | value:8299 | json:{"login": "rodriguescarson", "id": 6134699, "node_id": "MDQ6VXNlcjYxMzQ2OTk=", "avatar_url": "https://avatars.githubusercontent.com/u/6134699?v=4", "gravatar_id": "", "url": "https://api.github.com/users/rodriguescarson", "html_url": "https://github.com/rodriguescarson", "followers_url": "https://api.github.com/us... | value:False | true | |||||||||||
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`tests/utils.py` imports `strtobool` from `distutils.util`:
```python
from distutils.util import strtobool
```
`distutils` was removed from the standard library in **Python 3.12** ([PEP 632](https://peps.python.org/pep-0632/)). `tests/utils.py` is imported (via `from .utils import ...`) by *... | value:https://api.github.com/repos/huggingface/datasets/issues/8298/comments | value:PR_kwDODunzps7s7tdy | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8298", "html_url": "https://github.com/huggingface/datasets/pull/8298", "diff_url": "https://github.com/huggingface/datasets/pull/8298.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8298.patch", "merged_at": null} | value:2026-07-02T02:18:28Z | value:https://api.github.com/repos/huggingface/datasets/issues/8298/labels{/name} | value:8298 | json:{"login": "Sanjays2402", "id": 51058514, "node_id": "MDQ6VXNlcjUxMDU4NTE0", "avatar_url": "https://avatars.githubusercontent.com/u/51058514?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Sanjays2402", "html_url": "https://github.com/Sanjays2402", "followers_url": "https://api.github.com/users/Sanjay... | value:False | true | |||||||||||
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After calling `.add_column()` on a streaming `IterableDataset`, accessing `.features` returns `None`:
```python
from datasets import load_dataset
ds = load_dataset("...", streaming=True)
print(ds.features) # {'text': Value('string'), ...}
ds2 = ds.add_column("new_column", ["val"] * len(ds))
print(... | value:https://api.github.com/repos/huggingface/datasets/issues/8297/comments | value:PR_kwDODunzps7sh2Y4 | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8297", "html_url": "https://github.com/huggingface/datasets/pull/8297", "diff_url": "https://github.com/huggingface/datasets/pull/8297.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8297.patch", "merged_at": null} | value:2026-07-01T05:40:44Z | value:https://api.github.com/repos/huggingface/datasets/issues/8297/labels{/name} | value:8297 | json:{"login": "uttam12331", "id": 159913047, "node_id": "U_kgDOCYgUVw", "avatar_url": "https://avatars.githubusercontent.com/u/159913047?v=4", "gravatar_id": "", "url": "https://api.github.com/users/uttam12331", "html_url": "https://github.com/uttam12331", "followers_url": "https://api.github.com/users/uttam12331/foll... | value:False | true | |||||||||||
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## Summary
A symlink-following vulnerability exists in the archive extraction subsystem of `huggingface/datasets` that allows a local attacker with write access to a shared HuggingFace cache directory to write arbitrary files with the victim's privileges, by pre-planting a symlink at a pred... | value:https://api.github.com/repos/huggingface/datasets/issues/8296/comments | value:I_kwDODunzps8AAAABHOI25g | value:open | value:3 | value:2026-08-29T21:30:27Z | value:https://api.github.com/repos/huggingface/datasets/issues/8296/labels{/name} | value:8296 | json:{"login": "AAtomical", "id": 106249136, "node_id": "U_kgDOBlU7sA", "avatar_url": "https://avatars.githubusercontent.com/u/106249136?v=4", "gravatar_id": "", "url": "https://api.github.com/users/AAtomical", "html_url": "https://github.com/AAtomical", "followers_url": "https://api.github.com/users/AAtomical/follower... | true | |||||||||||
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For a streaming `IterableDataset`, calling `load_state_dict()` and then continuing to iterate leaves `state_dict()` at the initial position (`shard_idx=0`, `shard_example_idx=0`). Reading resumes from the correct place, but the the state never advances again.
The practical consequence shows up o... | value:https://api.github.com/repos/huggingface/datasets/issues/8295/comments | value:PR_kwDODunzps7sSwmy | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8295", "html_url": "https://github.com/huggingface/datasets/pull/8295", "diff_url": "https://github.com/huggingface/datasets/pull/8295.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8295.patch", "merged_at": "2026-07-06T15:19:54Z"} | value:2026-07-06T15:19:54Z | value:https://api.github.com/repos/huggingface/datasets/issues/8295/labels{/name} | value:8295 | json:{"login": "francesco-bertolotti", "id": 205762612, "node_id": "U_kgDODEOwNA", "avatar_url": "https://avatars.githubusercontent.com/u/205762612?v=4", "gravatar_id": "", "url": "https://api.github.com/users/francesco-bertolotti", "html_url": "https://github.com/francesco-bertolotti", "followers_url": "https://api.gi... | value:False | true | |||||||||
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Adds missing docstrings to five public utility functions in `src/datasets/utils/py_utils.py`. Each docstring follows the HuggingFace documentation style with `Args`, `Returns`, `Raises`, and `Example` sections.
**Functions documented:**
| Function | What it does |
|---|---|
| `glob_pat... | value:https://api.github.com/repos/huggingface/datasets/issues/8294/comments | value:PR_kwDODunzps7sQSQZ | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8294", "html_url": "https://github.com/huggingface/datasets/pull/8294", "diff_url": "https://github.com/huggingface/datasets/pull/8294.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8294.patch", "merged_at": null} | value:2026-10-14T17:21:05Z | value:https://api.github.com/repos/huggingface/datasets/issues/8294/labels{/name} | value:8294 | json:{"login": "RavSinghChandan", "id": 99543778, "node_id": "U_kgDOBe7q4g", "avatar_url": "https://avatars.githubusercontent.com/u/99543778?v=4", "gravatar_id": "", "url": "https://api.github.com/users/RavSinghChandan", "html_url": "https://github.com/RavSinghChandan", "followers_url": "https://api.github.com/users/Ra... | value:False | true | |||||||||
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It would be useful if concatenating multiple `IterableDataset`s could preserve the shard information from each input dataset, so that:
- the total number of shards equals the sum of the input shards;
- `split_dataset_by_node()` and worker sharding continue to work efficiently;
- downstream d... | value:https://api.github.com/repos/huggingface/datasets/issues/8293/comments | value:I_kwDODunzps8AAAABHI57og | value:open | value:1 | value:2026-07-03T13:40:43Z | value:https://api.github.com/repos/huggingface/datasets/issues/8293/labels{/name} | value:8293 | json:{"login": "muyihao", "id": 37872457, "node_id": "MDQ6VXNlcjM3ODcyNDU3", "avatar_url": "https://avatars.githubusercontent.com/u/37872457?v=4", "gravatar_id": "", "url": "https://api.github.com/users/muyihao", "html_url": "https://github.com/muyihao", "followers_url": "https://api.github.com/users/muyihao/followers"... | true | |||||||||||
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[SuperCompress](https://github.com/arjunkshah/supercompress) is a learned prompt compression library that reduces LLM token usage by ~65% using a ~5K parameter neural policy.
**Why this matters for ML development:**
- Practical ML deployment: a tiny model (~5K pa... | value:https://api.github.com/repos/huggingface/datasets/issues/8292/comments | value:I_kwDODunzps8AAAABHIBflA | value:closed | value:0 | value:2026-06-30T04:16:29Z | value:https://api.github.com/repos/huggingface/datasets/issues/8292/labels{/name} | value:8292 | json:{"login": "arjunkshah", "id": 180205446, "node_id": "U_kgDOCr23hg", "avatar_url": "https://avatars.githubusercontent.com/u/180205446?v=4", "gravatar_id": "", "url": "https://api.github.com/users/arjunkshah", "html_url": "https://github.com/arjunkshah", "followers_url": "https://api.github.com/users/arjunkshah/foll... | true | ||||||||
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This PR introduces the `skip_origin_metadata` kwarg to skip costly origin metadata fetching (ETags/mtime) when it's not needed, improving streaming initialization latency. This saves number of files `fs.info` calls per `load_dataset` call.
### Changes
- **Kwarg Plumbing**: Routes the `skip_origin_m... | value:https://api.github.com/repos/huggingface/datasets/issues/8291/comments | value:PR_kwDODunzps7sB4nP | value:closed | value:4 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8291", "html_url": "https://github.com/huggingface/datasets/pull/8291", "diff_url": "https://github.com/huggingface/datasets/pull/8291.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8291.patch", "merged_at": null} | value:2026-08-13T03:38:50Z | value:https://api.github.com/repos/huggingface/datasets/issues/8291/labels{/name} | value:8291 | json:{"login": "yuxin00j", "id": 255896926, "node_id": "U_kgDOD0CtXg", "avatar_url": "https://avatars.githubusercontent.com/u/255896926?v=4", "gravatar_id": "", "url": "https://api.github.com/users/yuxin00j", "html_url": "https://github.com/yuxin00j", "followers_url": "https://api.github.com/users/yuxin00j/followers", ... | value:False | true | |||||||||
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This PR updates the usage example for selecting columns in a streaming dataset. The example now correctly uses the `select_columns` method instead of the outdated `select` method.
### Changes
- **Documentation update:**
* Updated the exa... | value:https://api.github.com/repos/huggingface/datasets/issues/8290/comments | value:PR_kwDODunzps7rpmpe | value:open | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8290", "html_url": "https://github.com/huggingface/datasets/pull/8290", "diff_url": "https://github.com/huggingface/datasets/pull/8290.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8290.patch", "merged_at": null} | value:2026-06-29T06:37:17Z | value:https://api.github.com/repos/huggingface/datasets/issues/8290/labels{/name} | value:8290 | json:{"login": "albertvillanova", "id": 8515462, "node_id": "MDQ6VXNlcjg1MTU0NjI=", "avatar_url": "https://avatars.githubusercontent.com/u/8515462?v=4", "gravatar_id": "", "url": "https://api.github.com/users/albertvillanova", "html_url": "https://github.com/albertvillanova", "followers_url": "https://api.github.com/us... | value:False | true | |||||||||||
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Adds a data-driven manual/semi-automated **regression test suite** for `datasets` at `tests/regression/regression_suite.md` (128 test cases).
The suite was built by mining 984 historical issues (2020-04 → 2021-09) to find the bug categories that keep repeating, cross-checking the curren... | value:https://api.github.com/repos/huggingface/datasets/issues/8289/comments | value:PR_kwDODunzps7rm9iX | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8289", "html_url": "https://github.com/huggingface/datasets/pull/8289", "diff_url": "https://github.com/huggingface/datasets/pull/8289.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8289.patch", "merged_at": null} | value:2026-06-29T03:43:38Z | value:https://api.github.com/repos/huggingface/datasets/issues/8289/labels{/name} | value:8289 | json:{"login": "yuchen814", "id": 114374394, "node_id": "U_kgDOBtE2-g", "avatar_url": "https://avatars.githubusercontent.com/u/114374394?v=4", "gravatar_id": "", "url": "https://api.github.com/users/yuchen814", "html_url": "https://github.com/yuchen814", "followers_url": "https://api.github.com/users/yuchen814/follower... | value:False | true | |||||||||||
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"...data files of a a Storage Bucket." → "...data files of a Storage Bucket."
Documentation-only change; no code behavior affected. | value:https://api.github.com/repos/huggingface/datasets/issues/8288/comments | value:PR_kwDODunzps7rm9RQ | value:open | value:3 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8288", "html_url": "https://github.com/huggingface/datasets/pull/8288", "diff_url": "https://github.com/huggingface/datasets/pull/8288.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8288.patch", "merged_at": null} | value:2026-09-24T07:04:29Z | value:https://api.github.com/repos/huggingface/datasets/issues/8288/labels{/name} | value:8288 | json:{"login": "Sreekant13", "id": 60787859, "node_id": "MDQ6VXNlcjYwNzg3ODU5", "avatar_url": "https://avatars.githubusercontent.com/u/60787859?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Sreekant13", "html_url": "https://github.com/Sreekant13", "followers_url": "https://api.github.com/users/Sreekant1... | value:False | true | |||||||||||
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- "effiently" -> "efficiently" in the description of `get_frames_in_range`
- "whithin" -> "within" in the description of `get_frames_played_in_range`
Both flagged by `typos` (typos-cli 1.47.2) and verified by reading the surrounding context.
## AI assistance
Thi... | value:https://api.github.com/repos/huggingface/datasets/issues/8287/comments | value:PR_kwDODunzps7rKCbR | value:open | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8287", "html_url": "https://github.com/huggingface/datasets/pull/8287", "diff_url": "https://github.com/huggingface/datasets/pull/8287.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8287.patch", "merged_at": null} | value:2026-07-17T10:56:49Z | value:https://api.github.com/repos/huggingface/datasets/issues/8287/labels{/name} | value:8287 | json:{"login": "Dodothereal", "id": 129273127, "node_id": "U_kgDOB7SNJw", "avatar_url": "https://avatars.githubusercontent.com/u/129273127?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Dodothereal", "html_url": "https://github.com/Dodothereal", "followers_url": "https://api.github.com/users/Dodothereal/... | value:False | true | |||||||||||
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Fixes #8149.
`_get_origin_metadata` resolves each data file in a `ThreadPoolExecutor` and every worker builds its own filesystem via `url_to_fs` since fsspec caches filesystem instances per thread. For cloud backends like `s3://` or `gcs://` this re-resolves credentials and opens a ... | value:https://api.github.com/repos/huggingface/datasets/issues/8286/comments | value:PR_kwDODunzps7rFykk | value:closed | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8286", "html_url": "https://github.com/huggingface/datasets/pull/8286", "diff_url": "https://github.com/huggingface/datasets/pull/8286.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8286.patch", "merged_at": null} | value:2026-07-04T10:52:44Z | value:https://api.github.com/repos/huggingface/datasets/issues/8286/labels{/name} | value:8286 | json:{"login": "Ijtihed", "id": 157096389, "node_id": "U_kgDOCV0ZxQ", "avatar_url": "https://avatars.githubusercontent.com/u/157096389?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Ijtihed", "html_url": "https://github.com/Ijtihed", "followers_url": "https://api.github.com/users/Ijtihed/followers", "fol... | value:False | true | |||||||||
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- Fixes gated-repo failures when `Dataset.push_to_hub(..., embed_external_files=True)` embeds `hf://` image/audio paths into Parquet shards.
- `_push_parquet_shards_to_hub_single` now builds a `token_per_repo_id` map from shard paths (and destination repo metadata) and passes it to `embed_table_storage... | value:https://api.github.com/repos/huggingface/datasets/issues/8285/comments | value:PR_kwDODunzps7q-fxf | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8285", "html_url": "https://github.com/huggingface/datasets/pull/8285", "diff_url": "https://github.com/huggingface/datasets/pull/8285.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8285.patch", "merged_at": null} | value:2026-06-26T12:34:13Z | value:https://api.github.com/repos/huggingface/datasets/issues/8285/labels{/name} | value:8285 | json:{"login": "itxsamad1", "id": 183233227, "node_id": "U_kgDOCuvqyw", "avatar_url": "https://avatars.githubusercontent.com/u/183233227?v=4", "gravatar_id": "", "url": "https://api.github.com/users/itxsamad1", "html_url": "https://github.com/itxsamad1", "followers_url": "https://api.github.com/users/itxsamad1/follower... | value:False | true | |||||||||||
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`set` has a custom reducer (`_save_set`) that pickles its elements sorted, so the fingerprint is stable across runs. `frozenset` has no such reducer and falls back to the default one, which keeps... | value:https://api.github.com/repos/huggingface/datasets/issues/8284/comments | value:PR_kwDODunzps7q5CZm | value:open | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8284", "html_url": "https://github.com/huggingface/datasets/pull/8284", "diff_url": "https://github.com/huggingface/datasets/pull/8284.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8284.patch", "merged_at": null} | value:2026-09-22T04:23:54Z | value:https://api.github.com/repos/huggingface/datasets/issues/8284/labels{/name} | value:8284 | json:{"login": "sarathfrancis90", "id": 9289498, "node_id": "MDQ6VXNlcjkyODk0OTg=", "avatar_url": "https://avatars.githubusercontent.com/u/9289498?v=4", "gravatar_id": "", "url": "https://api.github.com/users/sarathfrancis90", "html_url": "https://github.com/sarathfrancis90", "followers_url": "https://api.github.com/us... | value:False | true | |||||||||||
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## 1. `tests/test_hub.py::test_delete_from_hub`
Since `huggingface_hub` 1.20.0 (introduced in https://github.com/huggingface/huggin... | value:https://api.github.com/repos/huggingface/datasets/issues/8283/comments | value:PR_kwDODunzps7qklZL | value:closed | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8283", "html_url": "https://github.com/huggingface/datasets/pull/8283", "diff_url": "https://github.com/huggingface/datasets/pull/8283.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8283.patch", "merged_at": "2026-06-25T14:57:07Z"} | value:2026-06-25T14:57:11Z | value:https://api.github.com/repos/huggingface/datasets/issues/8283/labels{/name} | value:8283 | json:{"login": "Wauplin", "id": 11801849, "node_id": "MDQ6VXNlcjExODAxODQ5", "avatar_url": "https://avatars.githubusercontent.com/u/11801849?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Wauplin", "html_url": "https://github.com/Wauplin", "followers_url": "https://api.github.com/users/Wauplin/followers"... | value:False | true | |||||||||
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This PR addresses issue #5354. The standard `typing.List` (or built-in `list`) is invariant in Python, meaning static analyzers like Mypy will complain if a user tries to pass a tuple or another valid sequence into the dataset loading parameters (e.g. `data_files`). By refactoring these type hints... | value:https://api.github.com/repos/huggingface/datasets/issues/8282/comments | value:PR_kwDODunzps7pq4O0 | value:open | value:1 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8282", "html_url": "https://github.com/huggingface/datasets/pull/8282", "diff_url": "https://github.com/huggingface/datasets/pull/8282.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8282.patch", "merged_at": null} | value:2026-10-10T06:56:35Z | value:https://api.github.com/repos/huggingface/datasets/issues/8282/labels{/name} | value:8282 | json:{"login": "Paramveersingh-S", "id": 155875516, "node_id": "U_kgDOCUp4vA", "avatar_url": "https://avatars.githubusercontent.com/u/155875516?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Paramveersingh-S", "html_url": "https://github.com/Paramveersingh-S", "followers_url": "https://api.github.com/use... | value:False | true | |||||||||||
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```
Exception: SplitsNotFoundError
Message: The split names could not be parsed from the dataset config.
Traceback: Traceback (most recent call last):
File "/usr/local/lib/... | value:https://api.github.com/repos/huggingface/datasets/issues/8281/comments | value:PR_kwDODunzps7pplkb | value:closed | value:4 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8281", "html_url": "https://github.com/huggingface/datasets/pull/8281", "diff_url": "https://github.com/huggingface/datasets/pull/8281.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8281.patch", "merged_at": "2026-07-31T10:36:50Z"} | value:2026-07-31T12:16:44Z | value:https://api.github.com/repos/huggingface/datasets/issues/8281/labels{/name} | value:8281 | json:{"login": "Alex-PLACET", "id": 2400067, "node_id": "MDQ6VXNlcjI0MDAwNjc=", "avatar_url": "https://avatars.githubusercontent.com/u/2400067?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Alex-PLACET", "html_url": "https://github.com/Alex-PLACET", "followers_url": "https://api.github.com/users/Alex-PLA... | value:False | true | |||||||||
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- detect Teich Cursor trace rows using Cursor-specific metadata and preserved `raw_cursor` data
- normalize Cursor sessions into the shared agent traces schema with session id, timestamp, prompt, user count, tool-call count, and per-row raw trace preservation
- update the Teich test dependency to ... | value:https://api.github.com/repos/huggingface/datasets/issues/8280/comments | value:PR_kwDODunzps7oNulR | value:open | value:3 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8280", "html_url": "https://github.com/huggingface/datasets/pull/8280", "diff_url": "https://github.com/huggingface/datasets/pull/8280.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8280.patch", "merged_at": null} | value:2026-07-26T06:06:31Z | value:https://api.github.com/repos/huggingface/datasets/issues/8280/labels{/name} | value:8280 | json:{"login": "armand0e", "id": 53029190, "node_id": "MDQ6VXNlcjUzMDI5MTkw", "avatar_url": "https://avatars.githubusercontent.com/u/53029190?v=4", "gravatar_id": "", "url": "https://api.github.com/users/armand0e", "html_url": "https://github.com/armand0e", "followers_url": "https://api.github.com/users/armand0e/follow... | value:False | true | |||||||||||
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invalid concatenated JSON arrays. Now forces a single batch. | value:https://api.github.com/repos/huggingface/datasets/issues/8279/comments | value:PR_kwDODunzps7n43Ko | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8279", "html_url": "https://github.com/huggingface/datasets/pull/8279", "diff_url": "https://github.com/huggingface/datasets/pull/8279.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8279.patch", "merged_at": null} | value:2026-06-18T10:12:04Z | value:https://api.github.com/repos/huggingface/datasets/issues/8279/labels{/name} | value:8279 | json:{"login": "decembercomposer697-hue", "id": 253469319, "node_id": "U_kgDODxuihw", "avatar_url": "https://avatars.githubusercontent.com/u/253469319?v=4", "gravatar_id": "", "url": "https://api.github.com/users/decembercomposer697-hue", "html_url": "https://github.com/decembercomposer697-hue", "followers_url": "https... | value:False | true | |||||||||||
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Fixes ~20 typos in docstrings, comments, and messages (no functional changes). Examples: `informations`→`information`, `simulatenous`→`simultaneous`, `acculumation`→`accumulation`, `ambigious`→`ambiguous`, `conveniant`→`convenient`, `unstructred`→`unstructured`, `lenth`→`length`, `compre... | value:https://api.github.com/repos/huggingface/datasets/issues/8276/comments | value:PR_kwDODunzps7nJ8AR | value:closed | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8276", "html_url": "https://github.com/huggingface/datasets/pull/8276", "diff_url": "https://github.com/huggingface/datasets/pull/8276.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8276.patch", "merged_at": null} | value:2026-11-04T06:21:42Z | value:https://api.github.com/repos/huggingface/datasets/issues/8276/labels{/name} | value:8276 | json:{"login": "DaoyuanLi2816", "id": 94409450, "node_id": "U_kgDOBaCS6g", "avatar_url": "https://avatars.githubusercontent.com/u/94409450?v=4", "gravatar_id": "", "url": "https://api.github.com/users/DaoyuanLi2816", "html_url": "https://github.com/DaoyuanLi2816", "followers_url": "https://api.github.com/users/DaoyuanL... | value:False | true | |||||||||
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- Fix `Dataset.to_json(lines=False, orient="records")` when the dataset is larger than `batch_size`
- Previously each batch wrote a separate top-level JSON array (`[...][...]`), producing invalid JSON (`JSONDecodeError: Extra data`)
- Merge batched pandas outputs into one array by stripping per-batch b... | value:https://api.github.com/repos/huggingface/datasets/issues/8275/comments | value:PR_kwDODunzps7miALR | value:open | value:0 | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8275", "html_url": "https://github.com/huggingface/datasets/pull/8275", "diff_url": "https://github.com/huggingface/datasets/pull/8275.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8275.patch", "merged_at": null} | value:2026-06-15T12:21:17Z | value:https://api.github.com/repos/huggingface/datasets/issues/8275/labels{/name} | value:8275 | json:{"login": "KirtiRamchandani", "id": 33368817, "node_id": "MDQ6VXNlcjMzMzY4ODE3", "avatar_url": "https://avatars.githubusercontent.com/u/33368817?v=4", "gravatar_id": "", "url": "https://api.github.com/users/KirtiRamchandani", "html_url": "https://github.com/KirtiRamchandani", "followers_url": "https://api.github.c... | value:False | true | |||||||||||
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Changes:
docs/source/process.mdx: colums -> columns
docs/source/video_load.mdx: effiently -> efficiently; whithin -> within
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`groupby()` on unsorted exported parquet rows dropped earlier shards when the same config reappeared later in the list. Sort by `(config, split)` first.
Regression test: `test_non_consecutive_config_rows_are_merged_in_metadata_configs_from_exported_parquet_files`
```
rootdir: /tmp/datasets
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`_from_exported_parquet_files_and_dataset_infos()` uses `itertools.groupby()` on unsorted `exported_parquet_files`.
If the same `config` appears again after another config, the earlier shard URLs are lost.
## Repro
```python
from itertools import groupby
from operator import itemgetter
exported = [
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