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A local file with the same name as a WebDataset member can replace the embedded image. When an `Image` dictionary supplies both a relative archive label and bytes, the encoder can discard the bytes if the label happens to resolve to a file in the working directory.
Keep the relative label and the sup... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8982 | json:[] | value:8982 | value:fix(image): keep bytes for relative archive labels | value:6290882341 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8982/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8982", "html_url": "https://github.com/huggingface/datasets/pull/8982", "diff_url": "https://github.com/huggingface/datasets/pull/8982.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8982.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8982/events | value:2026-11-09T17:11:01Z | value:https://api.github.com/repos/huggingface/datasets/issues/8982/labels{/name} | json:[] | value:NONE | value:2026-11-09T17:11:01Z | json:{"login": "GoldArowana", "id": 27399349, "node_id": "MDQ6VXNlcjI3Mzk5MzQ5", "avatar_url": "https://avatars.githubusercontent.com/u/27399349?v=4", "gravatar_id": "", "url": "https://api.github.com/users/GoldArowana", "html_url": "https://github.com/GoldArowana", "followers_url": "https://api.github.com/users/GoldAr... | value:PR_kwDODunzps8AAAABN5v5xw | true | |||||||||||
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Adding a column to an Arrow-, pandas-, or Polars-formatted `IterableDataset` currently raises `TypeError` during iteration because the internal callback returns a dictionary. Perform this operation in batched Arrow format, append the new column without discarding the original columns, and restore th... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8981 | json:[] | value:8981 | value:Fix IterableDataset.add_column with table formats | value:6274148965 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8981/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8981", "html_url": "https://github.com/huggingface/datasets/pull/8981", "diff_url": "https://github.com/huggingface/datasets/pull/8981.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8981.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8981/events | value:2026-11-08T18:26:32Z | value:https://api.github.com/repos/huggingface/datasets/issues/8981/labels{/name} | json:[] | value:NONE | value:2026-11-08T18:26:32Z | json:{"login": "FOWEPJF255", "id": 270070255, "node_id": "U_kgDOEBjx7w", "avatar_url": "https://avatars.githubusercontent.com/u/270070255?v=4", "gravatar_id": "", "url": "https://api.github.com/users/FOWEPJF255", "html_url": "https://github.com/FOWEPJF255", "followers_url": "https://api.github.com/users/FOWEPJF255/foll... | value:PR_kwDODunzps8AAAABNsYR6g | true | |||||||||||
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`IterableDataset.add_column()` fails during iteration after `with_format("arrow")`, `with_format("pandas")`, or `with_format("polars")`. Adding the column before selecting the format works. This prevents a streaming data preparation pipeline from adding metadata columns after it has selected... | value:https://api.github.com/repos/huggingface/datasets/issues/8980 | json:[] | value:8980 | value:IterableDataset.add_column fails with arrow, pandas and polars formats | value:6274107647 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8980/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8980/events | value:2026-11-08T18:21:59Z | value:https://api.github.com/repos/huggingface/datasets/issues/8980/labels{/name} | json:[{"login": "FOWEPJF255", "id": 270070255, "node_id": "U_kgDOEBjx7w", "avatar_url": "https://avatars.githubusercontent.com/u/270070255?v=4", "gravatar_id": "", "url": "https://api.github.com/users/FOWEPJF255", "html_url": "https://github.com/FOWEPJF255", "followers_url": "https://api.github.com/users/FOWEPJF255/fol... | value:NONE | value:2026-11-08T18:22:19Z | json:{"login": "FOWEPJF255", "id": 270070255, "node_id": "U_kgDOEBjx7w", "avatar_url": "https://avatars.githubusercontent.com/u/270070255?v=4", "gravatar_id": "", "url": "https://api.github.com/users/FOWEPJF255", "html_url": "https://github.com/FOWEPJF255", "followers_url": "https://api.github.com/users/FOWEPJF255/foll... | value:I_kwDODunzps8AAAABdfdI_w | true | ||||||||||
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```python
from datasets import IterableDataset
ds = IterableDataset.from_dict({"a": [1, 2, 3], "b": ["x", "y", "z"]})
list(ds.with_format("arrow").rename_column("a",... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8977 | json:[] | value:8977 | value:Fix IterableDataset.rename_columns with arrow, pandas and polars formats | value:6266654536 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8977/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8977", "html_url": "https://github.com/huggingface/datasets/pull/8977", "diff_url": "https://github.com/huggingface/datasets/pull/8977.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8977.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8977/events | value:2026-11-08T02:17:41Z | value:https://api.github.com/repos/huggingface/datasets/issues/8977/labels{/name} | json:[] | value:NONE | value:2026-11-08T02:17:41Z | json:{"login": "assass1nlike", "id": 326038984, "node_id": "U_kgDOE271yA", "avatar_url": "https://avatars.githubusercontent.com/u/326038984?v=4", "gravatar_id": "", "url": "https://api.github.com/users/assass1nlike", "html_url": "https://github.com/assass1nlike", "followers_url": "https://api.github.com/users/assass1nl... | value:PR_kwDODunzps8AAAABNmnIdQ | true | |||||||||||
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cc @lhoestq | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8976 | json:[] | value:8976 | value:Fix mixed-type JSON fields with slashes in their names | value:6266442521 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8976/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8976", "html_url": "https://github.com/huggingface/datasets/pull/8976", "diff_url": "https://github.com/huggingface/datasets/pull/8976.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8976.patch", "merged_at": "2026-11-09T17:28:50Z"} | value:https://api.github.com/repos/huggingface/datasets/issues/8976/events | value:2026-11-08T01:49:10Z | value:https://api.github.com/repos/huggingface/datasets/issues/8976/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-11-09T17:28:50Z | json:{"login": "its-amann", "id": 163747435, "node_id": "U_kgDOCcKWaw", "avatar_url": "https://avatars.githubusercontent.com/u/163747435?v=4", "gravatar_id": "", "url": "https://api.github.com/users/its-amann", "html_url": "https://github.com/its-amann", "followers_url": "https://api.github.com/users/its-amann/follower... | value:PR_kwDODunzps8AAAABNmcdng | true | |||||||||
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\get_parquet_column_options\ applied a single top-level \
equire_storage_embed\
result to every leaf under a struct field, disabling compression and dictionary
encoding for non-media columns whenever a media feature was present. Compute the
embed flag per leaf based on its own feature.
This pull req... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8975 | json:[] | value:8975 | value:Fix Parquet compression disabled for all columns in structs containing media | value:6266254101 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8975/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8975", "html_url": "https://github.com/huggingface/datasets/pull/8975", "diff_url": "https://github.com/huggingface/datasets/pull/8975.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8975.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8975/events | value:2026-11-08T01:21:44Z | value:https://api.github.com/repos/huggingface/datasets/issues/8975/labels{/name} | json:[] | value:NONE | value:2026-11-08T01:21:44Z | json:{"login": "davrens101", "id": 166565828, "node_id": "U_kgDOCe2XxA", "avatar_url": "https://avatars.githubusercontent.com/u/166565828?v=4", "gravatar_id": "", "url": "https://api.github.com/users/davrens101", "html_url": "https://github.com/davrens101", "followers_url": "https://api.github.com/users/davrens101/foll... | value:PR_kwDODunzps8AAAABNmTHlw | true | |||||||||||
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### Context & Problem
In #8674, Parquet writer options (`compression`, `use_dictionary`, `column_encoding`) were keyed by leaf path rather than top-level column names so nested struct/list fields would be compressed.
However, `get_parquet_column_options` still checked `require_storage_embed` only a... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8974 | json:[] | value:8974 | value:Compress nested non-media columns in Parquet writer alongside media features | value:6266018236 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8974/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8974", "html_url": "https://github.com/huggingface/datasets/pull/8974", "diff_url": "https://github.com/huggingface/datasets/pull/8974.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8974.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8974/events | value:2026-11-08T00:50:48Z | value:https://api.github.com/repos/huggingface/datasets/issues/8974/labels{/name} | json:[] | value:NONE | value:2026-11-08T00:50:48Z | json:{"login": "davrens101", "id": 166565828, "node_id": "U_kgDOCe2XxA", "avatar_url": "https://avatars.githubusercontent.com/u/166565828?v=4", "gravatar_id": "", "url": "https://api.github.com/users/davrens101", "html_url": "https://github.com/davrens101", "followers_url": "https://api.github.com/users/davrens101/foll... | value:PR_kwDODunzps8AAAABNmHV5w | true | |||||||||||
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When a dataset contains a struct or dictionary column that includes an embedded storage feature (such as `Image`, `Audio`, `Video`, etc.) alongside non-media columns (such as text strings, integers, floats, or vectors), saving the dataset to Parquet via `to_parquet()` or `push_to_hub()` disa... | value:https://api.github.com/repos/huggingface/datasets/issues/8973 | json:[] | value:8973 | value:Parquet writer disables compression for non-media columns in structs containing an Image or Audio feature | value:6266008854 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8973/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8973/events | value:2026-11-08T00:49:28Z | value:https://api.github.com/repos/huggingface/datasets/issues/8973/labels{/name} | json:[{"login": "davrens101", "id": 166565828, "node_id": "U_kgDOCe2XxA", "avatar_url": "https://avatars.githubusercontent.com/u/166565828?v=4", "gravatar_id": "", "url": "https://api.github.com/users/davrens101", "html_url": "https://github.com/davrens101", "followers_url": "https://api.github.com/users/davrens101/fol... | value:NONE | value:2026-11-08T00:49:45Z | json:{"login": "davrens101", "id": 166565828, "node_id": "U_kgDOCe2XxA", "avatar_url": "https://avatars.githubusercontent.com/u/166565828?v=4", "gravatar_id": "", "url": "https://api.github.com/users/davrens101", "html_url": "https://github.com/davrens101", "followers_url": "https://api.github.com/users/davrens101/foll... | value:I_kwDODunzps8AAAABdXu1Fg | true | ||||||||||
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```python
from datasets import load_dataset
load_dataset("eval", data_files="swe_benc... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8972 | json:[] | value:8972 | value:Fix the eval loader for string sample ids | value:6265890421 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8972/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8972", "html_url": "https://github.com/huggingface/datasets/pull/8972", "diff_url": "https://github.com/huggingface/datasets/pull/8972.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8972.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8972/events | value:2026-11-08T00:34:34Z | value:https://api.github.com/repos/huggingface/datasets/issues/8972/labels{/name} | json:[] | value:NONE | value:2026-11-08T11:13:13Z | json:{"login": "aidxhxr", "id": 93529551, "node_id": "U_kgDOBZMlzw", "avatar_url": "https://avatars.githubusercontent.com/u/93529551?v=4", "gravatar_id": "", "url": "https://api.github.com/users/aidxhxr", "html_url": "https://github.com/aidxhxr", "followers_url": "https://api.github.com/users/aidxhxr/followers", "follo... | value:PR_kwDODunzps8AAAABNmA7Ag | true | |||||||||||
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The Hub loading guide now shows where to find the Dataset Viewer’s **Auto-converted to Parquet** link and how to load one split from the conversion branch. The example uses the same CSV dataset already introduced in the guide and links to the Hub documentation for partial conversions and API access... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8970 | json:[] | value:8970 | value:Document how to load Parquet files from the Dataset Viewer | value:6261052761 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8970/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8970", "html_url": "https://github.com/huggingface/datasets/pull/8970", "diff_url": "https://github.com/huggingface/datasets/pull/8970.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8970.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8970/events | value:2026-11-07T15:48:21Z | value:https://api.github.com/repos/huggingface/datasets/issues/8970/labels{/name} | json:[] | value:NONE | value:2026-11-07T15:48:21Z | json:{"login": "Lizidong01", "id": 61378198, "node_id": "MDQ6VXNlcjYxMzc4MTk4", "avatar_url": "https://avatars.githubusercontent.com/u/61378198?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Lizidong01", "html_url": "https://github.com/Lizidong01", "followers_url": "https://api.github.com/users/Lizidong0... | value:PR_kwDODunzps8AAAABNiOk8g | true | |||||||||||
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Fixes #8967
`Dataset.map(num_proc=...)` with a `suffix_template` whose rank field is not exactly `{rank:05d}` (for example `_{rank:03d}_of_{num_proc:03d}`) worked on the first run, then raised `ValueError: Unknown format code 'd' for object of type 'str'` on every rerun that loaded all shards from th... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8968 | json:[] | value:8968 | value:Fix map with num_proc failing on a cache hit when suffix_template has a custom rank format | value:6258644043 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8968/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8968", "html_url": "https://github.com/huggingface/datasets/pull/8968", "diff_url": "https://github.com/huggingface/datasets/pull/8968.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8968.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8968/events | value:2026-11-07T11:44:12Z | value:https://api.github.com/repos/huggingface/datasets/issues/8968/labels{/name} | json:[] | value:NONE | value:2026-11-07T11:44:12Z | json:{"login": "Shizoqua", "id": 136805224, "node_id": "U_kgDOCCd7aA", "avatar_url": "https://avatars.githubusercontent.com/u/136805224?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Shizoqua", "html_url": "https://github.com/Shizoqua", "followers_url": "https://api.github.com/users/Shizoqua/followers", ... | value:PR_kwDODunzps8AAAABNgU1jw | true | |||||||||||
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`Dataset.map` with `num_proc` and a custom `suffix_template` works the first time, but every rerun that loads all shards from the cache raises `ValueError: Unknown format code 'd' for object of type 'str'`. Only the default `{rank:05d}` works. `Dataset.filter` has the same `suffix_template` ... | value:https://api.github.com/repos/huggingface/datasets/issues/8967 | json:[] | value:8967 | value:map(num_proc=...) crashes on a cache hit when suffix_template uses a rank format other than {rank:05d} | value:6258629802 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8967/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8967/events | value:2026-11-07T11:42:34Z | value:https://api.github.com/repos/huggingface/datasets/issues/8967/labels{/name} | json:[{"login": "Shizoqua", "id": 136805224, "node_id": "U_kgDOCCd7aA", "avatar_url": "https://avatars.githubusercontent.com/u/136805224?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Shizoqua", "html_url": "https://github.com/Shizoqua", "followers_url": "https://api.github.com/users/Shizoqua/followers",... | value:NONE | value:2026-11-07T11:42:56Z | json:{"login": "Shizoqua", "id": 136805224, "node_id": "U_kgDOCCd7aA", "avatar_url": "https://avatars.githubusercontent.com/u/136805224?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Shizoqua", "html_url": "https://github.com/Shizoqua", "followers_url": "https://api.github.com/users/Shizoqua/followers", ... | value:I_kwDODunzps8AAAABdQscqg | true | ||||||||||
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Fixes #8965
`Dataset.batch(by_column=...)` and `IterableDataset.batch(by_column=...)` treated a null key as equal to its neighbours, so different groups were merged into one batch. Keys `[1, None, 2]` gave a single batch. A key column with only nulls raised `ArrowNotImplementedError`. Now a null is i... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8966 | json:[] | value:8966 | value:Fix batch(by_column=) merging groups that are separated by null values | value:6252884195 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8966/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8966", "html_url": "https://github.com/huggingface/datasets/pull/8966", "diff_url": "https://github.com/huggingface/datasets/pull/8966.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8966.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8966/events | value:2026-11-07T00:02:33Z | value:https://api.github.com/repos/huggingface/datasets/issues/8966/labels{/name} | json:[] | value:NONE | value:2026-11-07T00:02:33Z | json:{"login": "Shizoqua", "id": 136805224, "node_id": "U_kgDOCCd7aA", "avatar_url": "https://avatars.githubusercontent.com/u/136805224?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Shizoqua", "html_url": "https://github.com/Shizoqua", "followers_url": "https://api.github.com/users/Shizoqua/followers", ... | value:PR_kwDODunzps8AAAABNbzIaw | true | |||||||||||
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`Dataset.batch(by_column=...)` and `IterableDataset.batch(by_column=...)` treat a null key as equal to its neighbours, so rows from different groups end up in the same batch. A key column that contains only nulls raises instead.
### Steps to reproduce the bug
```python
from datasets import... | value:https://api.github.com/repos/huggingface/datasets/issues/8965 | json:[] | value:8965 | value:batch(by_column=...) merges different groups when the key column contains nulls | value:6252844094 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8965/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8965/events | value:2026-11-06T23:58:39Z | value:https://api.github.com/repos/huggingface/datasets/issues/8965/labels{/name} | json:[{"login": "Shizoqua", "id": 136805224, "node_id": "U_kgDOCCd7aA", "avatar_url": "https://avatars.githubusercontent.com/u/136805224?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Shizoqua", "html_url": "https://github.com/Shizoqua", "followers_url": "https://api.github.com/users/Shizoqua/followers",... | value:NONE | value:2026-11-07T00:01:20Z | json:{"login": "Shizoqua", "id": 136805224, "node_id": "U_kgDOCCd7aA", "avatar_url": "https://avatars.githubusercontent.com/u/136805224?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Shizoqua", "html_url": "https://github.com/Shizoqua", "followers_url": "https://api.github.com/users/Shizoqua/followers", ... | value:I_kwDODunzps8AAAABdLLUPg | true | ||||||||||
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Fixes #8755 — Audio arrays remain NumPy arrays when using PyTorch formatting.
### Changes made
- Updated the TorchCodec audio decoder to support returning PyTorch tensors.
- Updated `TorchFormatter` to convert Hugging Face audio decoder output to PyTorch-compatible output.
- Preserved existing Nu... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8964 | json:[] | value:8964 | value:Fix audio array tensor conversion with torch formatting | value:6247326162 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8964/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8964", "html_url": "https://github.com/huggingface/datasets/pull/8964", "diff_url": "https://github.com/huggingface/datasets/pull/8964.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8964.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8964/events | value:2026-11-06T17:18:36Z | value:https://api.github.com/repos/huggingface/datasets/issues/8964/labels{/name} | json:[] | value:NONE | value:2026-11-07T17:23:29Z | json:{"login": "josephabishak88", "id": 249288588, "node_id": "U_kgDODtvXjA", "avatar_url": "https://avatars.githubusercontent.com/u/249288588?v=4", "gravatar_id": "", "url": "https://api.github.com/users/josephabishak88", "html_url": "https://github.com/josephabishak88", "followers_url": "https://api.github.com/users/... | value:PR_kwDODunzps8AAAABNXSGnw | true | |||||||||||
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### `http(s)://` data files fail on a clean install
fsspec's `HTTPFileSystem` needs `aiohttp`, but `aiohttp` is only in th... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8963 | json:[] | value:8963 | value:Fix Spark working_dir, tenbin infinite loop, HF auth host check, missing aiohttp and Harbor errors | value:6223147260 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8963/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8963", "html_url": "https://github.com/huggingface/datasets/pull/8963", "diff_url": "https://github.com/huggingface/datasets/pull/8963.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8963.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8963/events | value:2026-11-05T12:26:07Z | value:https://api.github.com/repos/huggingface/datasets/issues/8963/labels{/name} | json:[] | value:NONE | value:2026-11-05T12:26:07Z | json:{"login": "Marouane-elfadli", "id": 228027721, "node_id": "U_kgDODZdtSQ", "avatar_url": "https://avatars.githubusercontent.com/u/228027721?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Marouane-elfadli", "html_url": "https://github.com/Marouane-elfadli", "followers_url": "https://api.github.com/use... | value:PR_kwDODunzps8AAAABND8Yng | true | |||||||||||
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### Summary
- Prioritize 3D dataset detection when a repository contains mesh files alongside image textures.
- Prevent image textures from causing a 3D dataset to be incorrectly detected as an `imagefolder`.
- Preserve the existing format-selection behavior for other formats.
### Tests
- `python -... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8962 | json:[] | value:8962 | value:Fix : 3D format detection when texture files outnumber models | value:6218188671 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8962/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8962", "html_url": "https://github.com/huggingface/datasets/pull/8962", "diff_url": "https://github.com/huggingface/datasets/pull/8962.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8962.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8962/events | value:2026-11-05T06:39:31Z | value:https://api.github.com/repos/huggingface/datasets/issues/8962/labels{/name} | json:[] | value:NONE | value:2026-11-05T06:39:31Z | json:{"login": "bhumika-231206", "id": 351443745, "node_id": "U_kgDOFPKbIQ", "avatar_url": "https://avatars.githubusercontent.com/u/351443745?v=4", "gravatar_id": "", "url": "https://api.github.com/users/bhumika-231206", "html_url": "https://github.com/bhumika-231206", "followers_url": "https://api.github.com/users/bhu... | value:PR_kwDODunzps8AAAABM_8D8g | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8961/timeline | value:3 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8961 | value:https://api.github.com/repos/huggingface/datasets/issues/8961/comments | value:`Dataset.add_item` infers an Arrow table before applying the existing dataset features. Appending a Python integer above `2**63 - 1` therefore raises `OverflowError` even when its column is declared as `Value("uint64")`.
Retry the overflowing column with its existing scalar uint64 type. Other columns retain thei... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8961 | json:[] | value:8961 | value:Fix appending declared uint64 values beyond int64 range | value:6212024072 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8961/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8961", "html_url": "https://github.com/huggingface/datasets/pull/8961", "diff_url": "https://github.com/huggingface/datasets/pull/8961.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8961.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8961/events | value:2026-11-04T21:48:27Z | value:https://api.github.com/repos/huggingface/datasets/issues/8961/labels{/name} | json:[] | value:NONE | value:2026-11-06T10:00:51Z | json:{"login": "GoldArowana", "id": 27399349, "node_id": "MDQ6VXNlcjI3Mzk5MzQ5", "avatar_url": "https://avatars.githubusercontent.com/u/27399349?v=4", "gravatar_id": "", "url": "https://api.github.com/users/GoldArowana", "html_url": "https://github.com/GoldArowana", "followers_url": "https://api.github.com/users/GoldAr... | value:PR_kwDODunzps8AAAABM7A3nA | true | |||||||||||
value:2026-11-04T16:20:33Z | value:https://api.github.com/repos/huggingface/datasets/issues/8960/timeline | value:1 | value:https://api.github.com/repos/huggingface/datasets | 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:closed | value:https://github.com/huggingface/datasets/pull/8960 | value:https://api.github.com/repos/huggingface/datasets/issues/8960/comments | value:It was using the default of `batch_size` which is `None`, which means full downloads
By default it now uses max batch size (1000) | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8960 | json:[] | value:8960 | value:Fix batch(by_column=) default accumulation causing full downloads | value:6206755398 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8960/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8960", "html_url": "https://github.com/huggingface/datasets/pull/8960", "diff_url": "https://github.com/huggingface/datasets/pull/8960.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8960.patch", "merged_at": "2026-11-04T16:20:33Z"} | value:https://api.github.com/repos/huggingface/datasets/issues/8960/events | value:2026-11-04T16:20:14Z | value:https://api.github.com/repos/huggingface/datasets/issues/8960/labels{/name} | json:[] | value:MEMBER | value:2026-11-04T16:28:11Z | 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:PR_kwDODunzps8AAAABM2vxEg | true | |||||||||
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Read timestamp columns as objects and let the existing Arrow schema conversion parse them. This preserves the declared timestamp type, na... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8959 | json:[] | value:8959 | value:Fix CSV loading with explicit timestamp features | value:6206566552 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8959/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8959", "html_url": "https://github.com/huggingface/datasets/pull/8959", "diff_url": "https://github.com/huggingface/datasets/pull/8959.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8959.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8959/events | value:2026-11-04T16:08:14Z | value:https://api.github.com/repos/huggingface/datasets/issues/8959/labels{/name} | json:[] | value:NONE | value:2026-11-05T14:32:20Z | json:{"login": "feiiiiii5", "id": 204683769, "node_id": "U_kgDODDM5-Q", "avatar_url": "https://avatars.githubusercontent.com/u/204683769?v=4", "gravatar_id": "", "url": "https://api.github.com/users/feiiiiii5", "html_url": "https://github.com/feiiiiii5", "followers_url": "https://api.github.com/users/feiiiiii5/follower... | value:PR_kwDODunzps8AAAABM2mErg | true | |||||||||||
value:2026-11-04T17:56:43Z | value:https://api.github.com/repos/huggingface/datasets/issues/8958/timeline | value:1 | value:https://api.github.com/repos/huggingface/datasets | 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:closed | value:https://github.com/huggingface/datasets/pull/8958 | value:https://api.github.com/repos/huggingface/datasets/issues/8958/comments | value:`Mesh` (and the `meshfolder` builder behind it) only accepts `.glb`, `.ply` and `.stl`, although `trimesh` — which does the decoding — also reads glTF. So a folder of `.gltf` models produces no `Mesh` column at all, and `Mesh().decode_example({"path": "model.gltf", ...})` raises.
Measured on `main` (62e0b421), b... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8958 | json:[] | value:8958 | value:fix(mesh): accept .gltf in the Mesh feature and the meshfolder builder | value:6204466923 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8958/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8958", "html_url": "https://github.com/huggingface/datasets/pull/8958", "diff_url": "https://github.com/huggingface/datasets/pull/8958.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8958.patch", "merged_at": "2026-11-04T17:56:43Z"} | value:https://api.github.com/repos/huggingface/datasets/issues/8958/events | value:2026-11-04T14:13:03Z | value:https://api.github.com/repos/huggingface/datasets/issues/8958/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-11-04T17:56:43Z | json:{"login": "li-lizhe", "id": 82501526, "node_id": "MDQ6VXNlcjgyNTAxNTI2", "avatar_url": "https://avatars.githubusercontent.com/u/82501526?v=4", "gravatar_id": "", "url": "https://api.github.com/users/li-lizhe", "html_url": "https://github.com/li-lizhe", "followers_url": "https://api.github.com/users/li-lizhe/follow... | value:PR_kwDODunzps8AAAABM040tw | true | |||||||||
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if `split_dataset_by_node` sounds confusing in this setting we can also imagine a different function dedicated to meshes | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8957 | json:[] | value:8957 | value:more distributed docs (hsdp) | value:6204284026 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8957/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8957", "html_url": "https://github.com/huggingface/datasets/pull/8957", "diff_url": "https://github.com/huggingface/datasets/pull/8957.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8957.patch", "merged_at": "2026-11-05T11:28:05Z"} | value:https://api.github.com/repos/huggingface/datasets/issues/8957/events | value:2026-11-04T14:02:38Z | value:https://api.github.com/repos/huggingface/datasets/issues/8957/labels{/name} | json:[] | value:MEMBER | value:2026-11-05T11:28:08Z | 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:PR_kwDODunzps8AAAABM0vWwQ | true | |||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8956/timeline | json:{"total": 0, "completed": 0, "percent_completed": 0} | value:3 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/issues/8956 | value:https://api.github.com/repos/huggingface/datasets/issues/8956/comments | value:[cfahlgren1/3d-model-samples](https://huggingface.co/datasets/cfahlgren1/3d-model-samples/tree/main) has 6 `.glb` files and one `.gltf` model, but the viewer shows it as an `Image` dataset with 15 rows of FlightHelmet textures and no 3D models.
The format comes from the most common file extension, and a `.gltf` ... | value:https://api.github.com/repos/huggingface/datasets/issues/8956 | json:[] | value:8956 | value:[3d datasets]: repos with gltf textures get detected as images | value:6203429316 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8956/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8956/events | value:2026-11-04T13:12:16Z | value:https://api.github.com/repos/huggingface/datasets/issues/8956/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-11-05T04:42:54Z | json:{"login": "cfahlgren1", "id": 13546028, "node_id": "MDQ6VXNlcjEzNTQ2MDI4", "avatar_url": "https://avatars.githubusercontent.com/u/13546028?v=4", "gravatar_id": "", "url": "https://api.github.com/users/cfahlgren1", "html_url": "https://github.com/cfahlgren1", "followers_url": "https://api.github.com/users/cfahlgren... | value:I_kwDODunzps8AAAABccDRxA | true | |||||||||||
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Empty slices retain no row blocks. Rebuild those results directly from the saved schema, preserving column types, nullability and metadata. Nonempty block reconstruction... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8954 | json:[] | value:8954 | value:Fix pickling round-trips for empty ConcatenationTable slices | value:6194424635 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8954/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8954", "html_url": "https://github.com/huggingface/datasets/pull/8954", "diff_url": "https://github.com/huggingface/datasets/pull/8954.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8954.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8954/events | value:2026-11-04T01:29:41Z | value:https://api.github.com/repos/huggingface/datasets/issues/8954/labels{/name} | json:[] | value:NONE | value:2026-11-05T13:39:08Z | json:{"login": "ElMagAmine", "id": 36851541, "node_id": "MDQ6VXNlcjM2ODUxNTQx", "avatar_url": "https://avatars.githubusercontent.com/u/36851541?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ElMagAmine", "html_url": "https://github.com/ElMagAmine", "followers_url": "https://api.github.com/users/ElMagAmin... | value:PR_kwDODunzps8AAAABMs0sZQ | true | |||||||||||
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With `num_proc > 1`, `Dataset.map` splits the dataset into equal contiguous shards with `shard(contiguous=True)`, ignoring `batch_size`. Every shard then ends with its own incomplete batch:
- a batched function receives short batches in the middle of the dataset, not only at the end;
- `Dataset.bat... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8952 | json:[] | value:8952 | value:Shard batched map on batch boundaries with num_proc | value:6191600799 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8952/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8952", "html_url": "https://github.com/huggingface/datasets/pull/8952", "diff_url": "https://github.com/huggingface/datasets/pull/8952.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8952.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8952/events | value:2026-11-03T21:38:17Z | value:https://api.github.com/repos/huggingface/datasets/issues/8952/labels{/name} | json:[] | value:NONE | value:2026-11-05T17:01:32Z | json:{"login": "udsy19", "id": 71968569, "node_id": "MDQ6VXNlcjcxOTY4NTY5", "avatar_url": "https://avatars.githubusercontent.com/u/71968569?v=4", "gravatar_id": "", "url": "https://api.github.com/users/udsy19", "html_url": "https://github.com/udsy19", "followers_url": "https://api.github.com/users/udsy19/followers", "f... | value:PR_kwDODunzps8AAAABMqjtEQ | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8951/timeline | value:1 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8951 | value:https://api.github.com/repos/huggingface/datasets/issues/8951/comments | value:After `set_format(type=..., columns=[...])` or `with_transform(..., columns=[...])`, reading a column that is not in the format columns raises `KeyError`:
```python
from datasets import Dataset
ds = Dataset.from_dict({"input_ids": [[1, 2], [3, 4]], "label": [0, 1], "text": ["a b", "c d"]})
ds.set_format(type="n... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8951 | json:[] | value:8951 | value:Fix reading a column that is not in the format columns | value:6191078323 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8951/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8951", "html_url": "https://github.com/huggingface/datasets/pull/8951", "diff_url": "https://github.com/huggingface/datasets/pull/8951.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8951.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8951/events | value:2026-11-03T21:01:50Z | value:https://api.github.com/repos/huggingface/datasets/issues/8951/labels{/name} | json:[] | value:NONE | value:2026-11-05T18:32:55Z | json:{"login": "akanyaani", "id": 11317416, "node_id": "MDQ6VXNlcjExMzE3NDE2", "avatar_url": "https://avatars.githubusercontent.com/u/11317416?v=4", "gravatar_id": "", "url": "https://api.github.com/users/akanyaani", "html_url": "https://github.com/akanyaani", "followers_url": "https://api.github.com/users/akanyaani/fo... | value:PR_kwDODunzps8AAAABMqIx-w | true | |||||||||||
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pyarrow's JSON reader can return a table with invalid list offsets when a list starts with `null`. The `.jsonl` branch of `_read_metadata` in folder-based builders (`imagefolder` and the others) used that table without checking it, so values were silently wrong: `[null, 1]` and `[2]` loaded... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8950 | json:[] | value:8950 | value:Validate metadata.jsonl tables in folder-based builders | value:6190774085 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8950/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8950", "html_url": "https://github.com/huggingface/datasets/pull/8950", "diff_url": "https://github.com/huggingface/datasets/pull/8950.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8950.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8950/events | value:2026-11-03T20:41:12Z | value:https://api.github.com/repos/huggingface/datasets/issues/8950/labels{/name} | json:[] | value:NONE | value:2026-11-03T20:41:12Z | json:{"login": "shashank11yadav", "id": 65058495, "node_id": "MDQ6VXNlcjY1MDU4NDk1", "avatar_url": "https://avatars.githubusercontent.com/u/65058495?v=4", "gravatar_id": "", "url": "https://api.github.com/users/shashank11yadav", "html_url": "https://github.com/shashank11yadav", "followers_url": "https://api.github.com/... | value:PR_kwDODunzps8AAAABMp5CLw | true | |||||||||||
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When the `metadata.jsonl` of an `imagefolder` has a list column whose first element is `null`, `load_dataset` returns wrong values with no error. In the example below, `[null, 1]` and `[2]` come back as `[1, 2]` and `[0]`.
The same rows loaded with the `json` builder come back correctly on ... | value:https://api.github.com/repos/huggingface/datasets/issues/8949 | json:[] | value:8949 | value:imagefolder metadata.jsonl: a list starting with null loads as wrong values | value:6189886287 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8949/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8949/events | value:2026-11-03T19:42:12Z | value:https://api.github.com/repos/huggingface/datasets/issues/8949/labels{/name} | json:[] | value:NONE | value:2026-11-03T19:56:57Z | json:{"login": "shashank11yadav", "id": 65058495, "node_id": "MDQ6VXNlcjY1MDU4NDk1", "avatar_url": "https://avatars.githubusercontent.com/u/65058495?v=4", "gravatar_id": "", "url": "https://api.github.com/users/shashank11yadav", "html_url": "https://github.com/shashank11yadav", "followers_url": "https://api.github.com/... | value:I_kwDODunzps8AAAABcPIrTw | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8948/timeline | value:1 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8948 | value:https://api.github.com/repos/huggingface/datasets/issues/8948/comments | value:`Image().encode_example` fails on single-channel arrays shaped `(H, W, 1)`, which is how many image pipelines (OpenCV, torchvision, `np.expand_dims`) hand over grayscale images:
```python
import numpy as np
from datasets import Dataset, Features, Image
array = np.zeros((4, 4, 1), dtype=np.uint8)
Dataset.from_di... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8948 | json:[] | value:8948 | value:Encode single channel (H, W, 1) arrays with the Image feature | value:6188863008 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8948/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8948", "html_url": "https://github.com/huggingface/datasets/pull/8948", "diff_url": "https://github.com/huggingface/datasets/pull/8948.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8948.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8948/events | value:2026-11-03T18:35:57Z | value:https://api.github.com/repos/huggingface/datasets/issues/8948/labels{/name} | json:[] | value:NONE | value:2026-11-05T16:55:39Z | json:{"login": "Fahmid-Arman", "id": 184666560, "node_id": "U_kgDOCwHJwA", "avatar_url": "https://avatars.githubusercontent.com/u/184666560?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Fahmid-Arman", "html_url": "https://github.com/Fahmid-Arman", "followers_url": "https://api.github.com/users/Fahmid-Ar... | value:PR_kwDODunzps8AAAABMoWKjQ | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8947/timeline | value:0 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8947 | value:https://api.github.com/repos/huggingface/datasets/issues/8947/comments | value:CSV readers can reject missing values in declared integer or boolean columns before applying their nullable Arrow schema. With the Python parser, a value such as `"001"` in a declared string column can become `"1"`, losing its leading zeros even though the resulting feature type remains `string`.
Map declared ... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8947 | json:[] | value:8947 | value:Preserve declared scalar types when reading CSV features | value:6186607240 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8947/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8947", "html_url": "https://github.com/huggingface/datasets/pull/8947", "diff_url": "https://github.com/huggingface/datasets/pull/8947.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8947.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8947/events | value:2026-11-03T16:17:41Z | value:https://api.github.com/repos/huggingface/datasets/issues/8947/labels{/name} | json:[] | value:NONE | value:2026-11-04T06:38:14Z | json:{"login": "Wisnflo", "id": 189682482, "node_id": "U_kgDOC05TMg", "avatar_url": "https://avatars.githubusercontent.com/u/189682482?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Wisnflo", "html_url": "https://github.com/Wisnflo", "followers_url": "https://api.github.com/users/Wisnflo/followers", "fol... | value:PR_kwDODunzps8AAAABMmhLug | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8933/timeline | value:0 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8933 | value:https://api.github.com/repos/huggingface/datasets/issues/8933/comments | value:`map()` and `filter()` recognize async functions but classify objects with an async `__call__` as synchronous callbacks. A callable mapper then receives a coroutine instead of a mapping; a callable predicate can silently keep every row without being awaited.
Use a shared callback classifier for `Dataset` and `It... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8933 | json:[] | value:8933 | value:Fix async callable callbacks in map and filter | value:6171645382 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8933/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8933", "html_url": "https://github.com/huggingface/datasets/pull/8933", "diff_url": "https://github.com/huggingface/datasets/pull/8933.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8933.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8933/events | value:2026-11-02T21:50:26Z | value:https://api.github.com/repos/huggingface/datasets/issues/8933/labels{/name} | json:[] | value:NONE | value:2026-11-02T21:50:26Z | json:{"login": "GoldArowana", "id": 27399349, "node_id": "MDQ6VXNlcjI3Mzk5MzQ5", "avatar_url": "https://avatars.githubusercontent.com/u/27399349?v=4", "gravatar_id": "", "url": "https://api.github.com/users/GoldArowana", "html_url": "https://github.com/GoldArowana", "followers_url": "https://api.github.com/users/GoldAr... | value:PR_kwDODunzps8AAAABMabj8w | true | |||||||||||
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`dill` versions before 0.3.6 can't handle code objects on Python 3.11+, so `Dataset.map(num_proc=...)` crashes. `setup.py` still allows `dill>=0.3.0` on every Python version, so an environment that keeps an older `dill` installs `datasets` without complaint and fails at runtime. #7537 shows the... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8932 | json:[] | value:8932 | value:Require dill>=0.3.6 on Python 3.11+ | value:6169556813 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8932/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8932", "html_url": "https://github.com/huggingface/datasets/pull/8932", "diff_url": "https://github.com/huggingface/datasets/pull/8932.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8932.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8932/events | value:2026-11-02T19:33:47Z | value:https://api.github.com/repos/huggingface/datasets/issues/8932/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-11-02T19:33:47Z | json:{"login": "behroozazarkhalili", "id": 80390531, "node_id": "MDQ6VXNlcjgwMzkwNTMx", "avatar_url": "https://avatars.githubusercontent.com/u/80390531?v=4", "gravatar_id": "", "url": "https://api.github.com/users/behroozazarkhalili", "html_url": "https://github.com/behroozazarkhalili", "followers_url": "https://api.gi... | value:PR_kwDODunzps8AAAABMYwSjA | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8931/timeline | value:0 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8931 | value:https://api.github.com/repos/huggingface/datasets/issues/8931/comments | value:Passing a current-directory filename such as `indices_cache_file_name="selected.arrow"` raises `FileNotFoundError` for a noncontiguous selection: the indices writer calls `os.makedirs("")`. The same path is used by `sort`, `shuffle`, and `train_test_split`.
Use the current directory when the filename has no pa... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8931 | json:[] | value:8931 | value:Fix bare filenames for indices caches | value:6163474405 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8931/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8931", "html_url": "https://github.com/huggingface/datasets/pull/8931", "diff_url": "https://github.com/huggingface/datasets/pull/8931.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8931.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8931/events | value:2026-11-02T13:26:22Z | value:https://api.github.com/repos/huggingface/datasets/issues/8931/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-11-02T13:26:22Z | json:{"login": "Linxiushen", "id": 142557582, "node_id": "U_kgDOCH9Bjg", "avatar_url": "https://avatars.githubusercontent.com/u/142557582?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Linxiushen", "html_url": "https://github.com/Linxiushen", "followers_url": "https://api.github.com/users/Linxiushen/foll... | value:PR_kwDODunzps8AAAABMT1xKQ | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8930/timeline | value:0 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8930 | value:https://api.github.com/repos/huggingface/datasets/issues/8930/comments | value:## Summary
`_type` is a supported feature column name, but serializing it to dataset card metadata raises `TypeError: expected string or bytes-like object, got 'dict'`. The YAML serializer unconditionally removes `_type`, then treats its feature dictionary as a dataclass type name.
```python
from datasets impor... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8930 | json:[] | value:8930 | value:Preserve `_type` feature columns in dataset card metadata | value:6162565774 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8930/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8930", "html_url": "https://github.com/huggingface/datasets/pull/8930", "diff_url": "https://github.com/huggingface/datasets/pull/8930.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8930.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8930/events | value:2026-11-02T12:28:51Z | value:https://api.github.com/repos/huggingface/datasets/issues/8930/labels{/name} | json:[] | value:NONE | value:2026-11-02T12:39:25Z | json:{"login": "linjiaye929", "id": 91742523, "node_id": "U_kgDOBXfhOw", "avatar_url": "https://avatars.githubusercontent.com/u/91742523?v=4", "gravatar_id": "", "url": "https://api.github.com/users/linjiaye929", "html_url": "https://github.com/linjiaye929", "followers_url": "https://api.github.com/users/linjiaye929/fo... | value:PR_kwDODunzps8AAAABMTHbSw | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8929/timeline | value:0 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8929 | value:https://api.github.com/repos/huggingface/datasets/issues/8929/comments | value:With the `arrow` or `polars` format, a non-batched `Dataset.filter` crashes before it calls the function even once:
```python
import pyarrow.compute as pc
from datasets import Dataset
ds = Dataset.from_dict({"a": list(range(10))})
ds.with_format("polars").filter(lambda df: df["a"] > 5)
# AttributeError: 'DataF... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8929 | json:[] | value:8929 | value:Fix non-batched Dataset.filter with arrow and polars formats | value:6155715894 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8929/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8929", "html_url": "https://github.com/huggingface/datasets/pull/8929", "diff_url": "https://github.com/huggingface/datasets/pull/8929.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8929.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8929/events | value:2026-11-02T03:37:21Z | value:https://api.github.com/repos/huggingface/datasets/issues/8929/labels{/name} | json:[] | value:NONE | value:2026-11-02T03:37:21Z | json:{"login": "astroknot-sheep", "id": 105595392, "node_id": "U_kgDOBktCAA", "avatar_url": "https://avatars.githubusercontent.com/u/105595392?v=4", "gravatar_id": "", "url": "https://api.github.com/users/astroknot-sheep", "html_url": "https://github.com/astroknot-sheep", "followers_url": "https://api.github.com/users/... | value:PR_kwDODunzps8AAAABMNoKtg | true | |||||||||||
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When a field has mixed types, the JSON loader stores it as `Json()`. Before encoding a value, `json_encode_field` tries `ujson_loads` on it and keeps it unchanged if that succeeds, assuming it is already JSON-encoded. So a string that happens to be valid JSON text is stored without its quotes and co... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8928 | json:[] | value:8928 | value:Keep string values of mixed-type JSON fields instead of parsing them as JSON | value:6155664033 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8928/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8928", "html_url": "https://github.com/huggingface/datasets/pull/8928", "diff_url": "https://github.com/huggingface/datasets/pull/8928.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8928.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8928/events | value:2026-11-02T03:31:37Z | value:https://api.github.com/repos/huggingface/datasets/issues/8928/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-11-02T03:31:37Z | json:{"login": "behroozazarkhalili", "id": 80390531, "node_id": "MDQ6VXNlcjgwMzkwNTMx", "avatar_url": "https://avatars.githubusercontent.com/u/80390531?v=4", "gravatar_id": "", "url": "https://api.github.com/users/behroozazarkhalili", "html_url": "https://github.com/behroozazarkhalili", "followers_url": "https://api.gi... | value:PR_kwDODunzps8AAAABMNli8A | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8927/timeline | value:0 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8927 | value:https://api.github.com/repos/huggingface/datasets/issues/8927/comments | value:## Preserve nested fields when combining streaming datasets
Combining generator-backed streams with different finite struct fields silently drops fields present only in later sources. Arrow-backed streams fail to cast the same inputs, while map-style concatenation already preserves their union.
Recursively comb... | value:True | value:https://api.github.com/repos/huggingface/datasets/issues/8927 | json:[] | value:8927 | value:Preserve nested fields when combining streaming datasets | value:6154387424 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8927/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8927", "html_url": "https://github.com/huggingface/datasets/pull/8927", "diff_url": "https://github.com/huggingface/datasets/pull/8927.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8927.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8927/events | value:2026-11-02T01:15:59Z | value:https://api.github.com/repos/huggingface/datasets/issues/8927/labels{/name} | json:[] | value:NONE | value:2026-11-02T01:15:59Z | json:{"login": "Aurantium-47", "id": 280805072, "node_id": "U_kgDOELy-0A", "avatar_url": "https://avatars.githubusercontent.com/u/280805072?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Aurantium-47", "html_url": "https://github.com/Aurantium-47", "followers_url": "https://api.github.com/users/Aurantium... | value:PR_kwDODunzps8AAAABMMlIpw | true | |||||||||||
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When a field has mixed types, the JSON loader stores it as `Json()` (the default `on_mixed_types="use_json"` from #8027). Any string value in that field that is itself valid JSON text is then stored without its quotes, so it comes back as a different value and type: `"123"` becomes `123`, `"... | value:https://api.github.com/repos/huggingface/datasets/issues/8926 | json:[] | value:8926 | value:JSON loader turns string values into numbers, booleans or null when a field has mixed types | value:6154203695 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8926/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8926/events | value:2026-11-02T00:56:45Z | value:https://api.github.com/repos/huggingface/datasets/issues/8926/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-11-02T00:56:45Z | json:{"login": "behroozazarkhalili", "id": 80390531, "node_id": "MDQ6VXNlcjgwMzkwNTMx", "avatar_url": "https://avatars.githubusercontent.com/u/80390531?v=4", "gravatar_id": "", "url": "https://api.github.com/users/behroozazarkhalili", "html_url": "https://github.com/behroozazarkhalili", "followers_url": "https://api.gi... | value:I_kwDODunzps8AAAABbtGyLw | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8925/timeline | value:0 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8925 | value:https://api.github.com/repos/huggingface/datasets/issues/8925/comments | value:`cast_column` with a column name that is not in the dataset adds a new column filled with `None` instead of raising, in two places:
```python
from datasets import Dataset, Image, Value
ds = Dataset.from_dict({"a": [1, 2]})
ds.cast_column("b", Image())[0]
# {'a': 1, 'b': None}
ids = ds.to_iterable_dataset()
lis... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8925 | json:[] | value:8925 | value:Raise in cast_column when the column is not in the dataset | value:6152845737 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8925/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8925", "html_url": "https://github.com/huggingface/datasets/pull/8925", "diff_url": "https://github.com/huggingface/datasets/pull/8925.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8925.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8925/events | value:2026-11-01T22:27:40Z | value:https://api.github.com/repos/huggingface/datasets/issues/8925/labels{/name} | json:[] | value:NONE | value:2026-11-01T22:27:40Z | json:{"login": "ANDROIDHASSAN", "id": 84630851, "node_id": "MDQ6VXNlcjg0NjMwODUx", "avatar_url": "https://avatars.githubusercontent.com/u/84630851?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ANDROIDHASSAN", "html_url": "https://github.com/ANDROIDHASSAN", "followers_url": "https://api.github.com/users/... | value:PR_kwDODunzps8AAAABMLX-wA | true | |||||||||||
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Source inspection found that `Pdf.decode_example()` opens remote streams itself but passes them to `pdfplumber.open()` as externally owned file-like objects. Consequently, closing the returned PDF (including leaving its context manager) does not close the decoder's stream, and constructor failures als... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8924 | json:[] | value:8924 | value:Close decoder-owned streams when decoding remote PDFs | value:6151767736 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8924/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8924", "html_url": "https://github.com/huggingface/datasets/pull/8924", "diff_url": "https://github.com/huggingface/datasets/pull/8924.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8924.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8924/events | value:2026-11-01T20:35:52Z | value:https://api.github.com/repos/huggingface/datasets/issues/8924/labels{/name} | json:[] | value:NONE | value:2026-11-01T21:27:26Z | 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:PR_kwDODunzps8AAAABMKiRuw | true | |||||||||||
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In the TFDS-compat conversion, `Sequence(feature={...})` turns a dict of subfeatures into a dict of lists. Since #7672, subfeatures that are already list features are not converted anymore **when all of them are lists** — but the mixed case was still... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8923 | json:[] | value:8923 | value:Fix double nesting of list subfeatures in Sequence(dict) | value:6151521578 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8923/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8923", "html_url": "https://github.com/huggingface/datasets/pull/8923", "diff_url": "https://github.com/huggingface/datasets/pull/8923.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8923.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8923/events | value:2026-11-01T20:12:52Z | value:https://api.github.com/repos/huggingface/datasets/issues/8923/labels{/name} | json:[] | value:NONE | value:2026-11-01T20:13:01Z | json:{"login": "simpleqt", "id": 89645338, "node_id": "MDQ6VXNlcjg5NjQ1MzM4", "avatar_url": "https://avatars.githubusercontent.com/u/89645338?v=4", "gravatar_id": "", "url": "https://api.github.com/users/simpleqt", "html_url": "https://github.com/simpleqt", "followers_url": "https://api.github.com/users/simpleqt/follow... | value:PR_kwDODunzps8AAAABMKVu9g | true | |||||||||||
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`ClassLabel.int2str` accepts `Iterable` inputs, but currently iterates over them once to validate the labels and again to convert them. A one-shot iterator or generator is exhausted by validation, so valid input silently returns an empty list:
```python
label = ClassLabel(names=["negative", "pos... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8922 | json:[] | value:8922 | value:Fix ClassLabel.int2str for one-shot iterables | value:6145068682 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8922/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8922", "html_url": "https://github.com/huggingface/datasets/pull/8922", "diff_url": "https://github.com/huggingface/datasets/pull/8922.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8922.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8922/events | value:2026-11-01T09:50:08Z | value:https://api.github.com/repos/huggingface/datasets/issues/8922/labels{/name} | json:[] | value:NONE | value:2026-11-01T09:54:16Z | json:{"login": "linjiaye929", "id": 91742523, "node_id": "U_kgDOBXfhOw", "avatar_url": "https://avatars.githubusercontent.com/u/91742523?v=4", "gravatar_id": "", "url": "https://api.github.com/users/linjiaye929", "html_url": "https://github.com/linjiaye929", "followers_url": "https://api.github.com/users/linjiaye929/fo... | value:PR_kwDODunzps8AAAABMFVKyQ | true | |||||||||||
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- `webdataset.github.io/webdataset` (audio, image, video dataset guides) → `github.com/webdataset/webdataset`: the docs site is gone and the project moved from `tmbdev` to the `webdataset` org.
- `use_with_spark`: Spark ... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8921 | json:[] | value:8921 | value:Fix dead links to WebDataset, Spark and Albumentations docs | value:6140673659 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8921/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8921", "html_url": "https://github.com/huggingface/datasets/pull/8921", "diff_url": "https://github.com/huggingface/datasets/pull/8921.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8921.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8921/events | value:2026-10-31T22:50:50Z | value:https://api.github.com/repos/huggingface/datasets/issues/8921/labels{/name} | json:[] | value:NONE | value:2026-10-31T22:50:50Z | json:{"login": "erdogan-deniz", "id": 68436196, "node_id": "MDQ6VXNlcjY4NDM2MTk2", "avatar_url": "https://avatars.githubusercontent.com/u/68436196?v=4", "gravatar_id": "", "url": "https://api.github.com/users/erdogan-deniz", "html_url": "https://github.com/erdogan-deniz", "followers_url": "https://api.github.com/users/... | value:PR_kwDODunzps8AAAABMB6eFA | true | |||||||||||
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Resolve the validated selection to column names before selecting the stored blocks. This pr... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8920 | json:[] | value:8920 | value:Preserve concatenated table rows when pickling integer column selections | value:6140128360 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8920/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8920", "html_url": "https://github.com/huggingface/datasets/pull/8920", "diff_url": "https://github.com/huggingface/datasets/pull/8920.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8920.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8920/events | value:2026-10-31T21:48:10Z | value:https://api.github.com/repos/huggingface/datasets/issues/8920/labels{/name} | json:[] | value:NONE | value:2026-10-31T21:48:10Z | json:{"login": "ElMagAmine", "id": 36851541, "node_id": "MDQ6VXNlcjM2ODUxNTQx", "avatar_url": "https://avatars.githubusercontent.com/u/36851541?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ElMagAmine", "html_url": "https://github.com/ElMagAmine", "followers_url": "https://api.github.com/users/ElMagAmin... | value:PR_kwDODunzps8AAAABMBe84w | true | |||||||||||
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With `num_proc > 1`, batched `Dataset.map` (and `Dataset.batch`, which goes through it) splits the dataset into `num_proc` equal row chunks via `self.shard(num_shards, index=rank, contiguous=True)`, ignoring `batch_size`. Each chunk ends with its own short batch, so the function sees wrongly... | value:https://api.github.com/repos/huggingface/datasets/issues/8919 | json:[] | value:8919 | value:Batched map / Dataset.batch with num_proc>1 splits batches at shard boundaries and drop_last_batch loses rows | value:6139692528 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8919/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8919/events | value:2026-10-31T20:58:24Z | value:https://api.github.com/repos/huggingface/datasets/issues/8919/labels{/name} | json:[{"login": "IlyaKhalafi", "id": 80855937, "node_id": "MDQ6VXNlcjgwODU1OTM3", "avatar_url": "https://avatars.githubusercontent.com/u/80855937?v=4", "gravatar_id": "", "url": "https://api.github.com/users/IlyaKhalafi", "html_url": "https://github.com/IlyaKhalafi", "followers_url": "https://api.github.com/users/IlyaK... | value:NONE | value:2026-11-03T19:45:55Z | json:{"login": "udsy19", "id": 71968569, "node_id": "MDQ6VXNlcjcxOTY4NTY5", "avatar_url": "https://avatars.githubusercontent.com/u/71968569?v=4", "gravatar_id": "", "url": "https://api.github.com/users/udsy19", "html_url": "https://github.com/udsy19", "followers_url": "https://api.github.com/users/udsy19/followers", "f... | value:I_kwDODunzps8AAAABbfRF8A | true | ||||||||||
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value:https://api.github.com/repos/huggingface/datasets/issues/8917/timeline | value:0 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8917 | value:https://api.github.com/repos/huggingface/datasets/issues/8917/comments | value:Casting a nullable `LargeList` of an ArrayXD feature to a fixed-length `List` crashes, while the same cast from a regular `List` works:
```python
from datasets import Dataset, Features, Array2D, List, LargeList
ds = Dataset.from_dict(
{"x": [[[[1, 2]], [[3, 4]]], None]},
features=Features({"x": LargeLis... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8917 | json:[] | value:8917 | value:Fix casting a nullable LargeList of ArrayXD to a fixed-length List | value:6138782804 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8917/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8917", "html_url": "https://github.com/huggingface/datasets/pull/8917", "diff_url": "https://github.com/huggingface/datasets/pull/8917.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8917.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8917/events | value:2026-10-31T19:18:31Z | value:https://api.github.com/repos/huggingface/datasets/issues/8917/labels{/name} | json:[] | value:NONE | value:2026-10-31T19:18:31Z | json:{"login": "udsy19", "id": 71968569, "node_id": "MDQ6VXNlcjcxOTY4NTY5", "avatar_url": "https://avatars.githubusercontent.com/u/71968569?v=4", "gravatar_id": "", "url": "https://api.github.com/users/udsy19", "html_url": "https://github.com/udsy19", "followers_url": "https://api.github.com/users/udsy19/followers", "f... | value:PR_kwDODunzps8AAAABMAcO9g | true | |||||||||||
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The card writer treats a sole configuration as the default even when it has no explicit `default` flag, then unconditionally pops that missing flag. If the selected configuration is ... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8916 | json:[] | value:8916 | value:Fix default configuration selection when updating dataset cards | value:6138436855 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8916/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8916", "html_url": "https://github.com/huggingface/datasets/pull/8916", "diff_url": "https://github.com/huggingface/datasets/pull/8916.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8916.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8916/events | value:2026-10-31T18:41:21Z | value:https://api.github.com/repos/huggingface/datasets/issues/8916/labels{/name} | json:[] | value:NONE | value:2026-10-31T18:41:21Z | json:{"login": "DiadkoShmek", "id": 207617272, "node_id": "U_kgDODF_8-A", "avatar_url": "https://avatars.githubusercontent.com/u/207617272?v=4", "gravatar_id": "", "url": "https://api.github.com/users/DiadkoShmek", "html_url": "https://github.com/DiadkoShmek", "followers_url": "https://api.github.com/users/DiadkoShmek/... | value:PR_kwDODunzps8AAAABMALEmQ | true | |||||||||||
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## What this fixes
`Json.cast_storage` parsed only `storage[:5]` to decide whether a string column already contains JSON. When those five values parsed but a later one did not, the whole column was left untouched: the later value was stored as raw text instead of being encoded as a JSON string, and ... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8915 | json:[] | value:8915 | value:fix: encode non-JSON strings per value in Json.cast_storage | value:6133968824 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8915/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8915", "html_url": "https://github.com/huggingface/datasets/pull/8915", "diff_url": "https://github.com/huggingface/datasets/pull/8915.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8915.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8915/events | value:2026-10-31T10:49:24Z | value:https://api.github.com/repos/huggingface/datasets/issues/8915/labels{/name} | json:[] | value:NONE | value:2026-10-31T10:49:24Z | json:{"login": "Steve-20-ai", "id": 306727257, "node_id": "U_kgDOEkhJWQ", "avatar_url": "https://avatars.githubusercontent.com/u/306727257?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Steve-20-ai", "html_url": "https://github.com/Steve-20-ai", "followers_url": "https://api.github.com/users/Steve-20-ai/... | value:PR_kwDODunzps8AAAABL8uavA | true | |||||||||||
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Casting a string column to `Json()` uses a 5-row sample to decide whether the column already holds JSON. If the first five values parse as JSON but a later value does not, the later value is stored **unencoded**. It then reads back through `decode_example` as a syntax error instead of as a s... | value:https://api.github.com/repos/huggingface/datasets/issues/8914 | json:[] | value:8914 | value:Json.cast_storage only inspects the first 5 values, so plain strings past that point are stored unencoded and fail to decode | value:6133955166 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8914/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8914/events | value:2026-10-31T10:47:45Z | value:https://api.github.com/repos/huggingface/datasets/issues/8914/labels{/name} | json:[{"login": "Steve-20-ai", "id": 306727257, "node_id": "U_kgDOEkhJWQ", "avatar_url": "https://avatars.githubusercontent.com/u/306727257?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Steve-20-ai", "html_url": "https://github.com/Steve-20-ai", "followers_url": "https://api.github.com/users/Steve-20-ai... | value:NONE | value:2026-10-31T10:48:03Z | json:{"login": "Steve-20-ai", "id": 306727257, "node_id": "U_kgDOEkhJWQ", "avatar_url": "https://avatars.githubusercontent.com/u/306727257?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Steve-20-ai", "html_url": "https://github.com/Steve-20-ai", "followers_url": "https://api.github.com/users/Steve-20-ai/... | value:I_kwDODunzps8AAAABbZy6Xg | true | ||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8913/timeline | value:1 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8913 | value:https://api.github.com/repos/huggingface/datasets/issues/8913/comments | value:Saving an empty typed Dataset with default sharding caps the automatically chosen shard count at zero. The save completes, but `load_from_disk()` cannot reconstruct a table from the empty file list.
Keep at least one automatically chosen shard. Add regression coverage for default settings, `num_proc=2` and `max_... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8913 | json:[] | value:8913 | value:Fix empty typed Dataset save and reload | value:6129008846 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8913/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8913", "html_url": "https://github.com/huggingface/datasets/pull/8913", "diff_url": "https://github.com/huggingface/datasets/pull/8913.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8913.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8913/events | value:2026-10-31T00:15:19Z | value:https://api.github.com/repos/huggingface/datasets/issues/8913/labels{/name} | json:[] | value:NONE | value:2026-11-09T17:53:27Z | json:{"login": "alberttwong", "id": 749093, "node_id": "MDQ6VXNlcjc0OTA5Mw==", "avatar_url": "https://avatars.githubusercontent.com/u/749093?v=4", "gravatar_id": "", "url": "https://api.github.com/users/alberttwong", "html_url": "https://github.com/alberttwong", "followers_url": "https://api.github.com/users/alberttwon... | value:PR_kwDODunzps8AAAABL40z5A | true | |||||||||||
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Datasets 5.1.0 writes zero shards when saving an empty typed Dataset with default sharding. The saved state has `_data_files: []`; `load_from_disk()` raises `IndexError: list index out of range` in `ConcatenationTable.from_tables`. This reproduces without Redis, ADBC, network access or downl... | value:https://api.github.com/repos/huggingface/datasets/issues/8912 | json:[] | value:8912 | value:Empty typed Dataset default save cannot reload because it writes zero shards | value:6128941306 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8912/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8912/events | value:2026-10-31T00:07:45Z | value:https://api.github.com/repos/huggingface/datasets/issues/8912/labels{/name} | json:[] | value:NONE | value:2026-10-31T00:07:45Z | json:{"login": "alberttwong", "id": 749093, "node_id": "MDQ6VXNlcjc0OTA5Mw==", "avatar_url": "https://avatars.githubusercontent.com/u/749093?v=4", "gravatar_id": "", "url": "https://api.github.com/users/alberttwong", "html_url": "https://github.com/alberttwong", "followers_url": "https://api.github.com/users/alberttwon... | value:I_kwDODunzps8AAAABbVA4-g | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8911/timeline | value:1 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8911 | value:https://api.github.com/repos/huggingface/datasets/issues/8911/comments | value:Link a concrete Redis SQL-to-Arrow-to-Dataset workflow from the PyArrow interoperability guide. Explain the external driver/Search prerequisite, local conversion/persistence scope and one-shard empty-result save setting. No built-in loader or dependency is added.
Validation: the exact linked guide example passed... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8911 | json:[] | value:8911 | value:docs: link Redis ADBC Dataset integration guide | value:6128926592 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8911/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8911", "html_url": "https://github.com/huggingface/datasets/pull/8911", "diff_url": "https://github.com/huggingface/datasets/pull/8911.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8911.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8911/events | value:2026-10-31T00:06:22Z | value:https://api.github.com/repos/huggingface/datasets/issues/8911/labels{/name} | json:[] | value:NONE | value:2026-11-09T17:51:21Z | json:{"login": "alberttwong", "id": 749093, "node_id": "MDQ6VXNlcjc0OTA5Mw==", "avatar_url": "https://avatars.githubusercontent.com/u/749093?v=4", "gravatar_id": "", "url": "https://api.github.com/users/alberttwong", "html_url": "https://github.com/alberttwong", "followers_url": "https://api.github.com/users/alberttwon... | value:PR_kwDODunzps8AAAABL4wpAA | true | |||||||||||
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The "Example: data extraction" code block in use_with_polars.mdx used `re` and `pl` without importing them, so it failed with a NameError when run on its own. This adds `import re` and `import polars as pl` at the top of the block. | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8910 | json:[] | value:8910 | value:Docs: add missing imports in Use with Polars data extraction example | value:6127372052 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8910/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8910", "html_url": "https://github.com/huggingface/datasets/pull/8910", "diff_url": "https://github.com/huggingface/datasets/pull/8910.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8910.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8910/events | value:2026-10-30T21:40:09Z | value:https://api.github.com/repos/huggingface/datasets/issues/8910/labels{/name} | json:[] | value:NONE | value:2026-10-30T21:40:09Z | json:{"login": "punit857", "id": 192017818, "node_id": "U_kgDOC3H1mg", "avatar_url": "https://avatars.githubusercontent.com/u/192017818?v=4", "gravatar_id": "", "url": "https://api.github.com/users/punit857", "html_url": "https://github.com/punit857", "followers_url": "https://api.github.com/users/punit857/followers", ... | value:PR_kwDODunzps8AAAABL3g9yw | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8909/timeline | json:{"total": 0, "completed": 0, "percent_completed": 0} | value:1 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/issues/8909 | value:https://api.github.com/repos/huggingface/datasets/issues/8909/comments | value:### Describe the bug
The "Example: data extraction" code block on https://huggingface.co/docs/datasets/en/use_with_polars uses `re` without importing it:
pattern = re.compile("boxed\\{(.*)\\}")
Running the block as shown fails with `NameError: name 're' is not defined`.
### Steps to reproduce the bug
Cop... | value:https://api.github.com/repos/huggingface/datasets/issues/8909 | json:[] | value:8909 | value:Docs: missing `import re` in "Use with Polars" data extraction example | value:6127028924 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8909/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8909/events | value:2026-10-30T21:12:39Z | value:https://api.github.com/repos/huggingface/datasets/issues/8909/labels{/name} | json:[] | value:NONE | value:2026-10-30T21:29:27Z | json:{"login": "docsalive-team", "id": 350483914, "node_id": "U_kgDOFOP1yg", "avatar_url": "https://avatars.githubusercontent.com/u/350483914?v=4", "gravatar_id": "", "url": "https://api.github.com/users/docsalive-team", "html_url": "https://github.com/docsalive-team", "followers_url": "https://api.github.com/users/doc... | value:I_kwDODunzps8AAAABbTMKvA | true | |||||||||||
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Follow-up to #8786, which fixed this for `xpandas_read_csv`. The remaining streaming readers still handed `xopen(...)` to the reader without closing it:
- `xpyarrow_parquet_read_table`, `xsio_loadmat`: wrap in `with xopen(...)`.
- `xpandas_read_excel`: both the direct read and the BytesIO fallback n... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8908 | json:[] | value:8908 | value:Close xopen handles in xnumpy_load, xpandas_read_excel, xpyarrow_parquet_read_table, xsio_loadmat | value:6109381173 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8908/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8908", "html_url": "https://github.com/huggingface/datasets/pull/8908", "diff_url": "https://github.com/huggingface/datasets/pull/8908.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8908.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8908/events | value:2026-10-29T22:11:42Z | value:https://api.github.com/repos/huggingface/datasets/issues/8908/labels{/name} | json:[] | value:NONE | value:2026-10-29T22:11:42Z | json:{"login": "michaelkillgta", "id": 269775689, "node_id": "U_kgDOEBRzSQ", "avatar_url": "https://avatars.githubusercontent.com/u/269775689?v=4", "gravatar_id": "", "url": "https://api.github.com/users/michaelkillgta", "html_url": "https://github.com/michaelkillgta", "followers_url": "https://api.github.com/users/mic... | value:PR_kwDODunzps8AAAABLpILBQ | true | |||||||||||
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#8786 fixed the leaked `xopen` handle in `xpandas_read_csv`, but the other streaming readers in `utils/file_utils.py` still pass `xopen(...)` straight to the reader and never close it:
- `xnumpy_load`
- `xpandas_read_excel` (both the first try and the BytesIO fallback)
- `xpyarrow_parquet_r... | value:https://api.github.com/repos/huggingface/datasets/issues/8907 | json:[] | value:8907 | value:xnumpy_load, xpandas_read_excel, xpyarrow_parquet_read_table and xsio_loadmat never close their xopen handle | value:6109377081 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8907/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8907/events | value:2026-10-29T22:11:22Z | value:https://api.github.com/repos/huggingface/datasets/issues/8907/labels{/name} | json:[] | value:NONE | value:2026-10-29T22:11:22Z | json:{"login": "michaelkillgta", "id": 269775689, "node_id": "U_kgDOEBRzSQ", "avatar_url": "https://avatars.githubusercontent.com/u/269775689?v=4", "gravatar_id": "", "url": "https://api.github.com/users/michaelkillgta", "html_url": "https://github.com/michaelkillgta", "followers_url": "https://api.github.com/users/mic... | value:I_kwDODunzps8AAAABbCWyOQ | true | |||||||||||
value:2026-10-30T14:50:37Z | value:https://api.github.com/repos/huggingface/datasets/issues/8905/timeline | value:1 | value:https://api.github.com/repos/huggingface/datasets | 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:closed | value:https://github.com/huggingface/datasets/pull/8905 | value:https://api.github.com/repos/huggingface/datasets/issues/8905/comments | value:Bumps doc-builder to the latest `main` so the docs on hf.co/docs get [machine-translated](https://github.com/huggingface/doc-builder#machine-translated-documentation) into 11 languages, as discussed on Slack. Pages built by older doc-builder versions can't be translated.
🤖 Generated with [Claude Code](https://c... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8905 | json:[] | value:8905 | value:Bump doc-builder to get the docs machine-translated | value:6100014532 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8905/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8905", "html_url": "https://github.com/huggingface/datasets/pull/8905", "diff_url": "https://github.com/huggingface/datasets/pull/8905.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8905.patch", "merged_at": "2026-10-30T14:50:37Z"} | value:https://api.github.com/repos/huggingface/datasets/issues/8905/events | value:2026-10-29T12:50:36Z | value:https://api.github.com/repos/huggingface/datasets/issues/8905/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-10-30T14:50:40Z | 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:PR_kwDODunzps8AAAABLhhhYw | true | |||||||||
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For example, for stored values [2, 0] and an on-the-fly transform that adds 1... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8904 | json:[] | value:8904 | value:Preserve on-the-fly transforms when flattening dataset indices | value:6093849240 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8904/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8904", "html_url": "https://github.com/huggingface/datasets/pull/8904", "diff_url": "https://github.com/huggingface/datasets/pull/8904.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8904.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8904/events | value:2026-10-29T05:55:15Z | value:https://api.github.com/repos/huggingface/datasets/issues/8904/labels{/name} | json:[] | value:NONE | value:2026-10-30T09:21:02Z | json:{"login": "Mixriaoliao", "id": 261539271, "node_id": "U_kgDOD5bFxw", "avatar_url": "https://avatars.githubusercontent.com/u/261539271?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Mixriaoliao", "html_url": "https://github.com/Mixriaoliao", "followers_url": "https://api.github.com/users/Mixriaoliao/... | value:PR_kwDODunzps8AAAABLcheZA | true | |||||||||||
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A multi-step Harbor task declares `[[steps]]` in its `task.toml` and keeps its instructions in `steps/<step>/instruction.md`, so it doesn't need an `instruction.md` next to its `task.toml`. Harbor handles that case in several places:
- `Task... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8903 | json:[] | value:8903 | value:Load Harbor multi-step tasks without a top-level instruction.md | value:6080889794 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8903/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8903", "html_url": "https://github.com/huggingface/datasets/pull/8903", "diff_url": "https://github.com/huggingface/datasets/pull/8903.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8903.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8903/events | value:2026-10-28T14:23:32Z | value:https://api.github.com/repos/huggingface/datasets/issues/8903/labels{/name} | json:[] | value:NONE | value:2026-10-28T14:23:32Z | json:{"login": "xlb3055", "id": 178128333, "node_id": "U_kgDOCp4FzQ", "avatar_url": "https://avatars.githubusercontent.com/u/178128333?v=4", "gravatar_id": "", "url": "https://api.github.com/users/xlb3055", "html_url": "https://github.com/xlb3055", "followers_url": "https://api.github.com/users/xlb3055/followers", "fol... | value:PR_kwDODunzps8AAAABLSFV4A | true | |||||||||||
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Addresses the Datasets lock-file failure reported in huggingface/datasets#7900. Hub cache permissions are outside this patch.
## Problem
`DatasetBuilder` acquires exclusive file locks while checking cached metadata and while deciding whether a data... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8902 | json:[] | value:8902 | value:Allow reading prepared datasets from read-only shared caches | value:6078754655 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8902/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8902", "html_url": "https://github.com/huggingface/datasets/pull/8902", "diff_url": "https://github.com/huggingface/datasets/pull/8902.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8902.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8902/events | value:2026-10-28T12:17:51Z | value:https://api.github.com/repos/huggingface/datasets/issues/8902/labels{/name} | json:[] | value:NONE | value:2026-10-28T12:17:51Z | json:{"login": "Oscar-man-shrestha", "id": 172575019, "node_id": "U_kgDOCklJKw", "avatar_url": "https://avatars.githubusercontent.com/u/172575019?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Oscar-man-shrestha", "html_url": "https://github.com/Oscar-man-shrestha", "followers_url": "https://api.github.c... | value:PR_kwDODunzps8AAAABLQXf4A | true | |||||||||||
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## Bug
When loading JSONL with the default `on_mixed_types="use_json"`, a record with a literal key such as `"a/b"` is misinterpreted: the PyArrow error column name is split into the nested path `["a", "b"]`, even though the record has one literal key `"a/b"`. Re-encoding with that nested path leaves... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8899 | json:[] | value:8899 | value:fix(json): handle literal '/' in field names in mixed-type retry | value:6062954883 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8899/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8899", "html_url": "https://github.com/huggingface/datasets/pull/8899", "diff_url": "https://github.com/huggingface/datasets/pull/8899.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8899.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8899/events | value:2026-10-27T16:03:22Z | value:https://api.github.com/repos/huggingface/datasets/issues/8899/labels{/name} | json:[] | value:NONE | value:2026-11-03T16:51:54Z | json:{"login": "Sailaja-ASB", "id": 83068760, "node_id": "MDQ6VXNlcjgzMDY4NzYw", "avatar_url": "https://avatars.githubusercontent.com/u/83068760?v=4", "gravatar_id": "", "url": "https://api.github.com/users/Sailaja-ASB", "html_url": "https://github.com/Sailaja-ASB", "followers_url": "https://api.github.com/users/Sailaj... | value:PR_kwDODunzps8AAAABLDweqg | true | |||||||||||
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On main `ef61228a5756dcebfff8ee245d89c72822fb6ae6` (`datasets` 5.2.0.dev0), loading a two-row JSONL file with a literal `a/b` field mixing a number and a string does not finish with the default `on_mixed_types="use_json"`.
The same values under a plain field name load as `Json()`. A slash-c... | value:https://api.github.com/repos/huggingface/datasets/issues/8898 | json:[] | value:8898 | value:JSON loading retries indefinitely when a mixed-type field name contains a slash | value:6054912822 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8898/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8898/events | value:2026-10-27T07:34:57Z | value:https://api.github.com/repos/huggingface/datasets/issues/8898/labels{/name} | json:[{"login": "its-amann", "id": 163747435, "node_id": "U_kgDOCcKWaw", "avatar_url": "https://avatars.githubusercontent.com/u/163747435?v=4", "gravatar_id": "", "url": "https://api.github.com/users/its-amann", "html_url": "https://github.com/its-amann", "followers_url": "https://api.github.com/users/its-amann/followe... | value:NONE | value:2026-11-09T17:28:52Z | json:{"login": "bbbbbbbbbbb114", "id": 180641421, "node_id": "U_kgDOCsRejQ", "avatar_url": "https://avatars.githubusercontent.com/u/180641421?v=4", "gravatar_id": "", "url": "https://api.github.com/users/bbbbbbbbbbb114", "html_url": "https://github.com/bbbbbbbbbbb114", "followers_url": "https://api.github.com/users/bbb... | value:I_kwDODunzps8AAAABaOajNg | true | |||||||
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This change includes the absolute path, file... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8897 | json:[] | value:8897 | value:Invalidate extraction caches when source archive metadata changes | value:6030725997 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8897/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8897", "html_url": "https://github.com/huggingface/datasets/pull/8897", "diff_url": "https://github.com/huggingface/datasets/pull/8897.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8897.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8897/events | value:2026-10-25T23:43:53Z | value:https://api.github.com/repos/huggingface/datasets/issues/8897/labels{/name} | json:[] | value:NONE | value:2026-11-03T15:10:07Z | json:{"login": "omarborish", "id": 143956148, "node_id": "U_kgDOCJSYtA", "avatar_url": "https://avatars.githubusercontent.com/u/143956148?v=4", "gravatar_id": "", "url": "https://api.github.com/users/omarborish", "html_url": "https://github.com/omarborish", "followers_url": "https://api.github.com/users/omarborish/foll... | value:PR_kwDODunzps8AAAABKpyD0A | true | |||||||||||
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```python
import numpy as np
from datasets import Dataset, Value
ds = Dataset.from_dict({"id": list(range(5)), "v": np.eye(5, dtype=np.float32).tolist()})
ds.add_faiss_index("v")
ds.cast_column("id", Value("int32"... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8896 | json:[] | value:8896 | value:Fix batched map on a dataset with an index when the function returns a table | value:6028268797 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8896/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8896", "html_url": "https://github.com/huggingface/datasets/pull/8896", "diff_url": "https://github.com/huggingface/datasets/pull/8896.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8896.patch", "merged_at": "2026-11-04T17:57:45Z"} | value:https://api.github.com/repos/huggingface/datasets/issues/8896/events | value:2026-10-25T19:16:31Z | value:https://api.github.com/repos/huggingface/datasets/issues/8896/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-11-04T17:57:45Z | json:{"login": "ViderStar", "id": 95582650, "node_id": "U_kgDOBbJ5ug", "avatar_url": "https://avatars.githubusercontent.com/u/95582650?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ViderStar", "html_url": "https://github.com/ViderStar", "followers_url": "https://api.github.com/users/ViderStar/followers"... | value:PR_kwDODunzps8AAAABKn2lxw | true | |||||||||
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### Behavior
- Paths and bytes are stored uncha... | value:True | value:https://api.github.com/repos/huggingface/datasets/issues/8895 | json:[] | value:8895 | value:feat(features): add AtomicStructure with lazy AtomWorks decoding and preserved source files | value:6027361872 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8895/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8895", "html_url": "https://github.com/huggingface/datasets/pull/8895", "diff_url": "https://github.com/huggingface/datasets/pull/8895.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8895.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8895/events | value:2026-10-25T17:42:56Z | value:https://api.github.com/repos/huggingface/datasets/issues/8895/labels{/name} | json:[] | value:NONE | value:2026-11-09T18:47:37Z | json:{"login": "kierandidi", "id": 58345129, "node_id": "MDQ6VXNlcjU4MzQ1MTI5", "avatar_url": "https://avatars.githubusercontent.com/u/58345129?v=4", "gravatar_id": "", "url": "https://api.github.com/users/kierandidi", "html_url": "https://github.com/kierandidi", "followers_url": "https://api.github.com/users/kierandid... | value:PR_kwDODunzps8AAAABKnJDsQ | true | |||||||||||
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`require_decoding(feature, ignore_decode_attribute=...)` drops `ignore_decode_attribute` when it recurses: the `dict`, `list`/`tuple`, `LargeList` and `List` branches call `require_decoding(f)` without forwarding the flag. Only a top-level feature honours it.
`ignore_decode_attribute=True` is passed by ... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8892 | json:[] | value:8892 | value:Forward ignore_decode_attribute in nested require_decoding calls | value:6018163293 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8892/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8892", "html_url": "https://github.com/huggingface/datasets/pull/8892", "diff_url": "https://github.com/huggingface/datasets/pull/8892.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8892.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8892/events | value:2026-10-24T22:12:46Z | value:https://api.github.com/repos/huggingface/datasets/issues/8892/labels{/name} | json:[] | value:NONE | value:2026-10-24T22:12:46Z | json:{"login": "udsy19", "id": 71968569, "node_id": "MDQ6VXNlcjcxOTY4NTY5", "avatar_url": "https://avatars.githubusercontent.com/u/71968569?v=4", "gravatar_id": "", "url": "https://api.github.com/users/udsy19", "html_url": "https://github.com/udsy19", "followers_url": "https://api.github.com/users/udsy19/followers", "f... | value:PR_kwDODunzps8AAAABKf_y5A | true | |||||||||||
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checked ... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8890 | json:[] | value:8890 | value:keep nullable integers intact in to_pandas | value:6014230128 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8890/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8890", "html_url": "https://github.com/huggingface/datasets/pull/8890", "diff_url": "https://github.com/huggingface/datasets/pull/8890.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8890.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8890/events | value:2026-10-24T14:54:55Z | value:https://api.github.com/repos/huggingface/datasets/issues/8890/labels{/name} | json:[] | value:NONE | value:2026-10-24T14:54:55Z | json:{"login": "chessing234", "id": 134995372, "node_id": "U_kgDOCAvdrA", "avatar_url": "https://avatars.githubusercontent.com/u/134995372?v=4", "gravatar_id": "", "url": "https://api.github.com/users/chessing234", "html_url": "https://github.com/chessing234", "followers_url": "https://api.github.com/users/chessing234/... | value:PR_kwDODunzps8AAAABKc91DA | true | |||||||||||
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`PandasArrayExtensionDtype.__from_arrow__` materialized every fixed-shape ArrayXD column through `ArrayExtensionArray.to_numpy`, which pads the null rows with NaN and promotes the whole column to float64. Two consequences at the pandas boundary: the Arrow row validity was gone (a null row and a legit... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8889 | json:[] | value:8889 | value:Keep row validity and payloads in fixed-shape ArrayXD pandas round trips | value:6008187639 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8889/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8889", "html_url": "https://github.com/huggingface/datasets/pull/8889", "diff_url": "https://github.com/huggingface/datasets/pull/8889.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8889.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8889/events | value:2026-10-24T01:50:23Z | value:https://api.github.com/repos/huggingface/datasets/issues/8889/labels{/name} | json:[] | value:NONE | value:2026-11-02T04:14:52Z | json:{"login": "choksi2212", "id": 162600900, "node_id": "U_kgDOCbEXxA", "avatar_url": "https://avatars.githubusercontent.com/u/162600900?v=4", "gravatar_id": "", "url": "https://api.github.com/users/choksi2212", "html_url": "https://github.com/choksi2212", "followers_url": "https://api.github.com/users/choksi2212/foll... | value:PR_kwDODunzps8AAAABKYT83w | true | |||||||||||
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`Dataset.from_pandas(ds.to_pandas())` loses missing rows in a fixed-shape ArrayXD column. A null row becomes a valid all-NaN array. A legitimate all-NaN array must remain distinct from that missing row.
### Steps to reproduce the bug
Reproduced on main `ef61228a5756dcebfff8ee245d89c72822fb... | value:https://api.github.com/repos/huggingface/datasets/issues/8888 | json:[] | value:8888 | value:Fixed-shape ArrayXD pandas round trips lose row nulls and integer precision | value:6006545971 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8888/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8888/events | value:2026-10-23T22:45:51Z | value:https://api.github.com/repos/huggingface/datasets/issues/8888/labels{/name} | json:[] | value:NONE | value:2026-10-24T01:50:42Z | json:{"login": "sjdoane", "id": 234531224, "node_id": "U_kgDODfqpmA", "avatar_url": "https://avatars.githubusercontent.com/u/234531224?v=4", "gravatar_id": "", "url": "https://api.github.com/users/sjdoane", "html_url": "https://github.com/sjdoane", "followers_url": "https://api.github.com/users/sjdoane/followers", "fol... | value:I_kwDODunzps8AAAABZgSeMw | true | |||||||||||
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Propagate shuffling through vertical concatenation's shard wrappers so the existing skip/take or... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8887 | json:[] | value:8887 | value:Preserve selected streaming rows across concatenated epochs | value:6001922606 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8887/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8887", "html_url": "https://github.com/huggingface/datasets/pull/8887", "diff_url": "https://github.com/huggingface/datasets/pull/8887.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8887.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8887/events | value:2026-10-23T16:51:29Z | value:https://api.github.com/repos/huggingface/datasets/issues/8887/labels{/name} | json:[] | value:NONE | value:2026-10-23T16:51:29Z | json:{"login": "sjdoane", "id": 234531224, "node_id": "U_kgDODfqpmA", "avatar_url": "https://avatars.githubusercontent.com/u/234531224?v=4", "gravatar_id": "", "url": "https://api.github.com/users/sjdoane", "html_url": "https://github.com/sjdoane", "followers_url": "https://api.github.com/users/sjdoane/followers", "fol... | value:PR_kwDODunzps8AAAABKTRcRg | true | |||||||||||
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## What does this PR do?
Fixes #8877
`Dataset.from_sql()` can silently return incorrect cached rows when two SQLAlchemy queries differ only in their bound parameter values. The existing cache identity includes the compiled SQL placeholders but not their values, causing queries with different `WHERE`, `LIMIT/OF... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8886 | json:[] | value:8886 | value:Fix SQLAlchemy query cache collisions for bound parameters | value:5996193964 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8886/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8886", "html_url": "https://github.com/huggingface/datasets/pull/8886", "diff_url": "https://github.com/huggingface/datasets/pull/8886.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8886.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8886/events | value:2026-10-23T10:33:03Z | value:https://api.github.com/repos/huggingface/datasets/issues/8886/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-10-25T10:48:31Z | json:{"login": "gorkadabo1", "id": 106764709, "node_id": "U_kgDOBl0ZpQ", "avatar_url": "https://avatars.githubusercontent.com/u/106764709?v=4", "gravatar_id": "", "url": "https://api.github.com/users/gorkadabo1", "html_url": "https://github.com/gorkadabo1", "followers_url": "https://api.github.com/users/gorkadabo1/foll... | value:PR_kwDODunzps8AAAABKOpggg | true | |||||||||||
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Use `pyarrow.parquet.ParquetWriter` as a context manager so query, batch-write, and metadata failures finalize the writer before the enclosing path-owned file handle closes. Caller-provided binary streams remain open, and the successful byte-count result is unchanged.
This is an alternative to #874... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8885 | json:[] | value:8885 | value:Close Parquet export writers with a context manager | value:5996029451 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8885/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8885", "html_url": "https://github.com/huggingface/datasets/pull/8885", "diff_url": "https://github.com/huggingface/datasets/pull/8885.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8885.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8885/events | value:2026-10-23T10:20:18Z | value:https://api.github.com/repos/huggingface/datasets/issues/8885/labels{/name} | json:[] | value:NONE | value:2026-10-23T10:20:18Z | json:{"login": "wpyaoxueros", "id": 139048865, "node_id": "U_kgDOCEm3oQ", "avatar_url": "https://avatars.githubusercontent.com/u/139048865?v=4", "gravatar_id": "", "url": "https://api.github.com/users/wpyaoxueros", "html_url": "https://github.com/wpyaoxueros", "followers_url": "https://api.github.com/users/wpyaoxueros/... | value:PR_kwDODunzps8AAAABKOhAgA | true | |||||||||||
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```
ERROR tests/packaged_modules/test_spark.py
ModuleNotFoundError: No module named 'pyspark'
```
`tests/packaged_modules/test_spark.py` imports `pyspark` at module level, so collection fails ... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8884 | json:[] | value:8884 | value:Skip the spark tests when pyspark is not installed | value:5995468709 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8884/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8884", "html_url": "https://github.com/huggingface/datasets/pull/8884", "diff_url": "https://github.com/huggingface/datasets/pull/8884.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8884.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8884/events | value:2026-10-23T09:38:47Z | value:https://api.github.com/repos/huggingface/datasets/issues/8884/labels{/name} | json:[] | value:NONE | value:2026-10-24T23:28:21Z | json:{"login": "ege-arhan", "id": 68082325, "node_id": "MDQ6VXNlcjY4MDgyMzI1", "avatar_url": "https://avatars.githubusercontent.com/u/68082325?v=4", "gravatar_id": "", "url": "https://api.github.com/users/ege-arhan", "html_url": "https://github.com/ege-arhan", "followers_url": "https://api.github.com/users/ege-arhan/fo... | value:PR_kwDODunzps8AAAABKOEJ2g | true | |||||||||
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`str(sql.compile())` drops the bound values, so two queries that differ only by a WHERE, LIMIT, or IN parameter reused one cache entry. the key now inlines those binds.
@lhoestq | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8881 | json:[] | value:8881 | value:include bound SQL values in the dataset cache key | value:5992136423 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8881/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8881", "html_url": "https://github.com/huggingface/datasets/pull/8881", "diff_url": "https://github.com/huggingface/datasets/pull/8881.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8881.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8881/events | value:2026-10-23T04:55:34Z | value:https://api.github.com/repos/huggingface/datasets/issues/8881/labels{/name} | json:[] | value:NONE | value:2026-10-24T14:48:30Z | json:{"login": "chessing234", "id": 134995372, "node_id": "U_kgDOCAvdrA", "avatar_url": "https://avatars.githubusercontent.com/u/134995372?v=4", "gravatar_id": "", "url": "https://api.github.com/users/chessing234", "html_url": "https://github.com/chessing234", "followers_url": "https://api.github.com/users/chessing234/... | value:PR_kwDODunzps8AAAABKLaGPQ | true | |||||||||||
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`save_to_disk(num_proc=...)` on an in-memory dataset sends the whole table to every worker, once per shard, instead of just that shard's rows. So it is much slower and uses much more memory than it should.
```python
import pickle
from datasets import Dataset
ds = Dataset.from_dict({"text": ["some t... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8880 | json:[] | value:8880 | value:Fix save_to_disk sending the whole table to every worker for in-memory datasets | value:5991993396 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8880/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8880", "html_url": "https://github.com/huggingface/datasets/pull/8880", "diff_url": "https://github.com/huggingface/datasets/pull/8880.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8880.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8880/events | value:2026-10-23T04:39:59Z | value:https://api.github.com/repos/huggingface/datasets/issues/8880/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-10-23T04:39:59Z | json:{"login": "hzmsh", "id": 35788891, "node_id": "MDQ6VXNlcjM1Nzg4ODkx", "avatar_url": "https://avatars.githubusercontent.com/u/35788891?v=4", "gravatar_id": "", "url": "https://api.github.com/users/hzmsh", "html_url": "https://github.com/hzmsh", "followers_url": "https://api.github.com/users/hzmsh/followers", "follo... | value:PR_kwDODunzps8AAAABKLS0rQ | true | |||||||||||
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Replaces `Pandas._generate_tables()` with an unconditional migration error before file opening or unpickling. Builder construction and compatible prepared Arrow cache reuse remain supported. File ... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8879 | json:[] | value:8879 | value:Fix pickle RCE in pandas dataset builder (CVE-2026-57845) | value:5990221760 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8879/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8879", "html_url": "https://github.com/huggingface/datasets/pull/8879", "diff_url": "https://github.com/huggingface/datasets/pull/8879.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8879.patch", "merged_at": "2026-11-09T16:08:56Z"} | value:https://api.github.com/repos/huggingface/datasets/issues/8879/events | value:2026-10-23T01:26:22Z | value:https://api.github.com/repos/huggingface/datasets/issues/8879/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-11-09T17:27:32Z | json:{"login": "SaiTeja-Erukude", "id": 72928639, "node_id": "MDQ6VXNlcjcyOTI4NjM5", "avatar_url": "https://avatars.githubusercontent.com/u/72928639?v=4", "gravatar_id": "", "url": "https://api.github.com/users/SaiTeja-Erukude", "html_url": "https://github.com/SaiTeja-Erukude", "followers_url": "https://api.github.com/... | value:PR_kwDODunzps8AAAABKJ5kNw | true | |||||||||
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```pyt... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8878 | json:[] | value:8878 | value:Fix decoding a streamed PDF dataset twice after shuffle, take or filter | value:5988140756 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8878/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8878", "html_url": "https://github.com/huggingface/datasets/pull/8878", "diff_url": "https://github.com/huggingface/datasets/pull/8878.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8878.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8878/events | value:2026-10-22T22:01:09Z | value:https://api.github.com/repos/huggingface/datasets/issues/8878/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-10-29T20:21:30Z | json:{"login": "cwklurks", "id": 147788030, "node_id": "U_kgDOCM8Q_g", "avatar_url": "https://avatars.githubusercontent.com/u/147788030?v=4", "gravatar_id": "", "url": "https://api.github.com/users/cwklurks", "html_url": "https://github.com/cwklurks", "followers_url": "https://api.github.com/users/cwklurks/followers", ... | value:PR_kwDODunzps8AAAABKIPsRg | true | |||||||||||
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When `Dataset.from_sql()` receives a SQLAlchemy `Selectable`, queries with different parameter values can use the same cache key. If the first query is cached, the next query can return its rows instead of the correct results, without warning. This affects `WHERE` conditions, `LIMIT`, and ex... | value:https://api.github.com/repos/huggingface/datasets/issues/8877 | json:[] | value:8877 | value:Dataset.from_sql caches different SQLAlchemy queries under the same key when bound values change | value:5987283253 | json:[] | json:{"blocked_by": 0, "total_blocked_by": 0, "blocking": 0, "total_blocking": 0} | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8877/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | value:https://api.github.com/repos/huggingface/datasets/issues/8877/events | value:2026-10-22T20:53:46Z | value:https://api.github.com/repos/huggingface/datasets/issues/8877/labels{/name} | json:[{"login": "gorkadabo1", "id": 106764709, "node_id": "U_kgDOBl0ZpQ", "avatar_url": "https://avatars.githubusercontent.com/u/106764709?v=4", "gravatar_id": "", "url": "https://api.github.com/users/gorkadabo1", "html_url": "https://github.com/gorkadabo1", "followers_url": "https://api.github.com/users/gorkadabo1/fol... | value:CONTRIBUTOR | value:2026-10-22T20:54:04Z | json:{"login": "gorkadabo1", "id": 106764709, "node_id": "U_kgDOBl0ZpQ", "avatar_url": "https://avatars.githubusercontent.com/u/106764709?v=4", "gravatar_id": "", "url": "https://api.github.com/users/gorkadabo1", "html_url": "https://github.com/gorkadabo1", "followers_url": "https://api.github.com/users/gorkadabo1/foll... | value:I_kwDODunzps8AAAABZN6xNQ | true | ||||||||||
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When iterating an `IterableDataset` example by example, rows go through `RebatchedArrowExamplesIterable` with `batch_size=1`, so each row ends up as a 1-row Arrow table that gets cast and formatted on its own. That per-row overhead is why `for ex in ds` is slow, including after `to_iterable_dataset()... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8876 | json:[] | value:8876 | value:Faster IterableDataset iteration | value:5987109741 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8876/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8876", "html_url": "https://github.com/huggingface/datasets/pull/8876", "diff_url": "https://github.com/huggingface/datasets/pull/8876.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8876.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8876/events | value:2026-10-22T20:41:03Z | value:https://api.github.com/repos/huggingface/datasets/issues/8876/labels{/name} | json:[] | value:NONE | value:2026-11-06T11:46:07Z | json:{"login": "vsaraikin", "id": 43279475, "node_id": "MDQ6VXNlcjQzMjc5NDc1", "avatar_url": "https://avatars.githubusercontent.com/u/43279475?v=4", "gravatar_id": "", "url": "https://api.github.com/users/vsaraikin", "html_url": "https://github.com/vsaraikin", "followers_url": "https://api.github.com/users/vsaraikin/fo... | value:PR_kwDODunzps8AAAABKHaeEw | true | |||||||||||
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Write one empty batch through the existing pandas conversion so th... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8875 | json:[] | value:8875 | value:Honor table policies when exporting empty datasets to SQL | value:5983246086 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8875/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8875", "html_url": "https://github.com/huggingface/datasets/pull/8875", "diff_url": "https://github.com/huggingface/datasets/pull/8875.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8875.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8875/events | value:2026-10-22T16:20:36Z | value:https://api.github.com/repos/huggingface/datasets/issues/8875/labels{/name} | json:[] | value:NONE | value:2026-10-22T16:20:36Z | json:{"login": "emme1t", "id": 149944796, "node_id": "U_kgDOCO_53A", "avatar_url": "https://avatars.githubusercontent.com/u/149944796?v=4", "gravatar_id": "", "url": "https://api.github.com/users/emme1t", "html_url": "https://github.com/emme1t", "followers_url": "https://api.github.com/users/emme1t/followers", "followi... | value:PR_kwDODunzps8AAAABKEVyyg | true | |||||||||||
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Preserve unrestricted extension filters when calling `DataFilesPatternsList.filter_extensions`.
`DataFilesPatternsList.from_patterns(["*"])` stores `allowed_extensions=[None]`, where `None` means unrestricted. Calling `.filter_extensions([".json"])` on unchanged main attempts `None + [".json"]` and r... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8874 | json:[] | value:8874 | value:Preserve unrestricted filters when extending data-file patterns | value:5979277226 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8874/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8874", "html_url": "https://github.com/huggingface/datasets/pull/8874", "diff_url": "https://github.com/huggingface/datasets/pull/8874.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8874.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8874/events | value:2026-10-22T12:27:16Z | value:https://api.github.com/repos/huggingface/datasets/issues/8874/labels{/name} | json:[] | value:NONE | value:2026-11-03T07:55:39Z | json:{"login": "nawaaaaaAaar", "id": 198336470, "node_id": "U_kgDOC9Jf1g", "avatar_url": "https://avatars.githubusercontent.com/u/198336470?v=4", "gravatar_id": "", "url": "https://api.github.com/users/nawaaaaaAaar", "html_url": "https://github.com/nawaaaaaAaar", "followers_url": "https://api.github.com/users/nawaaaaaA... | value:PR_kwDODunzps8AAAABKBN9VQ | true | |||||||||||
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Removed a duplicated 'a' in a load.py docstring ('of a a Storage Bucket') and a duplicated 'to' in docs/source/process.mdx ('save it to to push_to_hub').
## Why
A small, objectively-verifiable improvement (typo) found during a
daily open-source maintenance pass (2026-10-22).
## How verified
Found both w... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8873 | json:[] | value:8873 | value:Fix doubled words in load.py docstring and process docs | value:5977320000 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8873/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8873", "html_url": "https://github.com/huggingface/datasets/pull/8873", "diff_url": "https://github.com/huggingface/datasets/pull/8873.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8873.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8873/events | value:2026-10-22T10:10:32Z | value:https://api.github.com/repos/huggingface/datasets/issues/8873/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-10-22T10:10:32Z | json:{"login": "aarushkandukoori", "id": 66923736, "node_id": "MDQ6VXNlcjY2OTIzNzM2", "avatar_url": "https://avatars.githubusercontent.com/u/66923736?v=4", "gravatar_id": "", "url": "https://api.github.com/users/aarushkandukoori", "html_url": "https://github.com/aarushkandukoori", "followers_url": "https://api.github.c... | value:PR_kwDODunzps8AAAABJ_o3Mw | true | |||||||||||
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The grouping callback... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8872 | json:[] | value:8872 | value:Preserve grouped streaming batches when resuming checkpoints | value:5975371876 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8872/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8872", "html_url": "https://github.com/huggingface/datasets/pull/8872", "diff_url": "https://github.com/huggingface/datasets/pull/8872.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8872.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8872/events | value:2026-10-22T07:55:50Z | value:https://api.github.com/repos/huggingface/datasets/issues/8872/labels{/name} | json:[] | value:NONE | value:2026-10-22T07:55:50Z | json:{"login": "liangqianxing", "id": 113435208, "node_id": "U_kgDOBsLiSA", "avatar_url": "https://avatars.githubusercontent.com/u/113435208?v=4", "gravatar_id": "", "url": "https://api.github.com/users/liangqianxing", "html_url": "https://github.com/liangqianxing", "followers_url": "https://api.github.com/users/liangq... | value:PR_kwDODunzps8AAAABJ-EYoA | true | |||||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8871/timeline | value:0 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8871 | value:https://api.github.com/repos/huggingface/datasets/issues/8871/comments | value:`IterableDataset.to_parquet(..., batch_size=2)` currently ignores the requested batch size: exporting seven rows creates a single seven-row Parquet row group, while `Dataset.to_parquet` creates row groups of `[2, 2, 2, 1]`. This prevents callers from controlling the row groups used when exporting streaming traini... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8871 | json:[] | value:8871 | value:Honor batch_size when exporting an IterableDataset to Parquet | value:5974424182 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8871/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8871", "html_url": "https://github.com/huggingface/datasets/pull/8871", "diff_url": "https://github.com/huggingface/datasets/pull/8871.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8871.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8871/events | value:2026-10-22T06:41:18Z | value:https://api.github.com/repos/huggingface/datasets/issues/8871/labels{/name} | json:[] | value:NONE | value:2026-10-22T06:41:18Z | json:{"login": "liangqianxing", "id": 113435208, "node_id": "U_kgDOBsLiSA", "avatar_url": "https://avatars.githubusercontent.com/u/113435208?v=4", "gravatar_id": "", "url": "https://api.github.com/users/liangqianxing", "html_url": "https://github.com/liangqianxing", "followers_url": "https://api.github.com/users/liangq... | value:PR_kwDODunzps8AAAABJ9Ty0g | true | |||||||||||
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Use empty byte strings only in the temporary examples passed to schema inference. Th... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8870 | json:[] | value:8870 | value:Avoid copying WebDataset binary payloads during schema inference | value:5972833087 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8870/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8870", "html_url": "https://github.com/huggingface/datasets/pull/8870", "diff_url": "https://github.com/huggingface/datasets/pull/8870.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8870.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8870/events | value:2026-10-22T04:04:04Z | value:https://api.github.com/repos/huggingface/datasets/issues/8870/labels{/name} | json:[] | value:NONE | value:2026-10-22T04:04:04Z | json:{"login": "cola1917", "id": 58059908, "node_id": "MDQ6VXNlcjU4MDU5OTA4", "avatar_url": "https://avatars.githubusercontent.com/u/58059908?v=4", "gravatar_id": "", "url": "https://api.github.com/users/cola1917", "html_url": "https://github.com/cola1917", "followers_url": "https://api.github.com/users/cola1917/follow... | value:PR_kwDODunzps8AAAABJ8DYIQ | true | |||||||||||
value:2026-10-22T10:43:33Z | value:https://api.github.com/repos/huggingface/datasets/issues/8869/timeline | value:1 | value:https://api.github.com/repos/huggingface/datasets | 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:closed | value:https://github.com/huggingface/datasets/pull/8869 | value:https://api.github.com/repos/huggingface/datasets/issues/8869/comments | value:The GenBank loader keeps the `""` escape inside quoted qualifier values. A wrapped line that ends in an escaped `""` also closes the value early, and a stray `"` lands at the end. The INSDC feature table (section 3.3.3.1) escapes each quotation mark in free text by doubling it. Its own example is `/note="This is ... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8869 | json:[] | value:8869 | value:Unescape doubled quotes in GenBank qualifier values | value:5972157921 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8869/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8869", "html_url": "https://github.com/huggingface/datasets/pull/8869", "diff_url": "https://github.com/huggingface/datasets/pull/8869.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8869.patch", "merged_at": "2026-10-22T10:43:32Z"} | value:https://api.github.com/repos/huggingface/datasets/issues/8869/events | value:2026-10-22T02:52:20Z | value:https://api.github.com/repos/huggingface/datasets/issues/8869/labels{/name} | json:[] | value:CONTRIBUTOR | value:2026-10-22T10:43:33Z | json:{"login": "chrikrah", "id": 48338417, "node_id": "MDQ6VXNlcjQ4MzM4NDE3", "avatar_url": "https://avatars.githubusercontent.com/u/48338417?v=4", "gravatar_id": "", "url": "https://api.github.com/users/chrikrah", "html_url": "https://github.com/chrikrah", "followers_url": "https://api.github.com/users/chrikrah/follow... | value:PR_kwDODunzps8AAAABJ7hj3Q | true | |||||||||
value:https://api.github.com/repos/huggingface/datasets/issues/8868/timeline | value:0 | value:https://api.github.com/repos/huggingface/datasets | value:open | value:https://github.com/huggingface/datasets/pull/8868 | value:https://api.github.com/repos/huggingface/datasets/issues/8868/comments | value:`Dataset.select_columns` accepts a list with repeated names and returns a dataset that looks fine but breaks on first use:
```python
from datasets import Dataset
ds = Dataset.from_dict({"a": [1, 2], "b": [3, 4]})
sel = ds.select_columns(["a", "a"])
print(sel.column_names, len(sel.features)) # ['a', 'a'] 1
sel[... | value:False | value:https://api.github.com/repos/huggingface/datasets/issues/8868 | json:[] | value:8868 | value:Raise on duplicate column names in Dataset.select_columns | value:5970386363 | json:[] | value:False | json:{"url": "https://api.github.com/repos/huggingface/datasets/issues/8868/reactions", "total_count": 0, "+1": 0, "-1": 0, "laugh": 0, "hooray": 0, "confused": 0, "heart": 0, "rocket": 0, "eyes": 0} | json:{"url": "https://api.github.com/repos/huggingface/datasets/pulls/8868", "html_url": "https://github.com/huggingface/datasets/pull/8868", "diff_url": "https://github.com/huggingface/datasets/pull/8868.diff", "patch_url": "https://github.com/huggingface/datasets/pull/8868.patch", "merged_at": null} | value:https://api.github.com/repos/huggingface/datasets/issues/8868/events | value:2026-10-21T23:50:02Z | value:https://api.github.com/repos/huggingface/datasets/issues/8868/labels{/name} | json:[] | value:NONE | value:2026-10-21T23:50:02Z | json:{"login": "astroknot-sheep", "id": 105595392, "node_id": "U_kgDOBktCAA", "avatar_url": "https://avatars.githubusercontent.com/u/105595392?v=4", "gravatar_id": "", "url": "https://api.github.com/users/astroknot-sheep", "html_url": "https://github.com/astroknot-sheep", "followers_url": "https://api.github.com/users/... | value:PR_kwDODunzps8AAAABJ6IhkA | true |
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