url stringlengths 58 61 | repository_url stringclasses 1
value | labels_url stringlengths 72 75 | comments_url stringlengths 67 70 | events_url stringlengths 65 68 | html_url stringlengths 48 51 | id int64 600M 5.54B | node_id stringlengths 18 24 | number int64 2 8.66k | title stringlengths 1 290 | user dict | labels listlengths 0 4 | state stringclasses 2
values | locked bool 1
class | assignees listlengths 0 4 | milestone dict | comments listlengths 0 30 | created_at stringdate 2020-04-14 18:18:51 2026-09-22 08:39:29 | updated_at stringdate 2020-04-29 09:23:05 2026-09-22 08:41:52 | closed_at stringlengths 19 19 ⌀ | assignee dict | author_association stringclasses 4
values | issue_field_values listlengths 0 0 | type stringclasses 0
values | active_lock_reason stringclasses 0
values | draft bool 0
classes | pull_request dict | body stringlengths 0 228k ⌀ | closed_by dict | reactions dict | timeline_url stringlengths 67 70 | performed_via_github_app dict | state_reason stringclasses 4
values | sub_issues_summary stringclasses 1
value | issue_dependencies_summary stringclasses 1
value | pinned_comment stringclasses 0
values | is_pull_request bool 1
class |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
https://api.github.com/repos/huggingface/datasets/issues/8663 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8663/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8663/comments | https://api.github.com/repos/huggingface/datasets/issues/8663/events | https://github.com/huggingface/datasets/issues/8663 | 5,537,226,391 | I_kwDODunzps8AAAABSgtelw | 8,663 | IterableDataset numpy format returns object instead of the declared dtype | {
"login": "Yonghui-Lee",
"id": 49152905,
"node_id": "MDQ6VXNlcjQ5MTUyOTA1",
"avatar_url": "https://avatars.githubusercontent.com/u/49152905?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/Yonghui-Lee",
"html_url": "https://github.com/Yonghui-Lee",
"followers_url": "https://api.github.com/... | [] | open | false | [] | null | [] | 2026-09-22 08:39:29 | 2026-09-22 08:41:52 | null | null | NONE | [] | null | null | null | null | ### Describe the bug
`NumpyFormatter._consolidate` builds a typed array only when every element is an `np.ndarray`. numpy **scalars** are `np.number`, not `np.ndarray`.
### Face 1 — `IterableDataset.batch()` on an arrow-backed dataset
`.batch()` regroups via a Python transpose
(`_batch_fn = lambda unbatched: {k: [v]... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8663/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8663/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8659 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8659/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8659/comments | https://api.github.com/repos/huggingface/datasets/issues/8659/events | https://github.com/huggingface/datasets/issues/8659 | 5,529,142,676 | I_kwDODunzps8AAAABSZAFlA | 8,659 | TranslationVariableLanguages crashes on empty translations with declared languages | {
"login": "HuaTNA",
"id": 126794161,
"node_id": "U_kgDOB465sQ",
"avatar_url": "https://avatars.githubusercontent.com/u/126794161?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/HuaTNA",
"html_url": "https://github.com/HuaTNA",
"followers_url": "https://api.github.com/users/HuaTNA/follower... | [] | open | false | [] | null | [] | 2026-09-21 15:38:25 | 2026-09-21 15:38:25 | null | null | NONE | [] | null | null | null | null | ## Describe the bug
With an explicit language list, `TranslationVariableLanguages.encode_example()`
raises `ValueError: not enough values to unpack (expected 2, got 0)` for `{}`,
`{"en": []}`, or `{"en": [], "fr": []}`. The same inputs also prevent
`Dataset.from_dict()` from constructing a dataset.
The equivalent alr... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8659/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8659/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8653 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8653/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8653/comments | https://api.github.com/repos/huggingface/datasets/issues/8653/events | https://github.com/huggingface/datasets/issues/8653 | 5,526,093,910 | I_kwDODunzps8AAAABSWGAVg | 8,653 | Long lock filenames do not provide mutual exclusion across Python processes | {
"login": "Yang1107-wzy",
"id": 193335484,
"node_id": "U_kgDOC4YQvA",
"avatar_url": "https://avatars.githubusercontent.com/u/193335484?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/Yang1107-wzy",
"html_url": "https://github.com/Yang1107-wzy",
"followers_url": "https://api.github.com/use... | [] | open | false | [] | null | [] | 2026-09-21 11:02:34 | 2026-09-21 11:02:34 | null | null | NONE | [] | null | null | null | null | ### Describe the bug
`FileLock.hash_filename_if_too_long()` uses Python's `hash(filename)` to shorten long lock filenames. String hashes vary between independently started Python processes, so two processes given the same long lock path can lock different files and both enter the protected section.
This affects paths... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8653/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8653/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8637 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8637/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8637/comments | https://api.github.com/repos/huggingface/datasets/issues/8637/events | https://github.com/huggingface/datasets/issues/8637 | 5,492,155,234 | I_kwDODunzps8AAAABR1ujYg | 8,637 | FileLock wrapper drops timeout and every other constructor argument | {
"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": "ht... | [] | open | false | [] | null | [
"Correction to the environment section above, found while testing a change that touches this wrapper.\n\nThis is filelock-version dependent, and filelock 4.0.0 already fixes it. Same probe, same `datasets` commit, only the filelock version differing:\n\n| filelock | `FileLock(p, timeout=5).timeout` | second `FileLo... | 2026-09-17 20:04:06 | 2026-09-17 21:04:15 | null | null | CONTRIBUTOR | [] | null | null | null | null | ### Describe the bug
`datasets.utils._filelock.FileLock` silently discards every keyword argument except `lock_file`. Passing `timeout=` has no effect, and `is_singleton=True` raises instead of returning the cached lock.
The wrapper declares a variadic signature:
```python
# src/datasets/utils/_filelock.py
def __ini... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8637/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8637/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8626 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8626/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8626/comments | https://api.github.com/repos/huggingface/datasets/issues/8626/events | https://github.com/huggingface/datasets/issues/8626 | 5,458,588,402 | I_kwDODunzps8AAAABRVty8g | 8,626 | Probabilistic interleave without replacement samples empty datasets | {
"login": "HaokaiDing",
"id": 226810271,
"node_id": "U_kgDODYTZnw",
"avatar_url": "https://avatars.githubusercontent.com/u/226810271?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/HaokaiDing",
"html_url": "https://github.com/HaokaiDing",
"followers_url": "https://api.github.com/users/Hao... | [] | open | false | [] | null | [] | 2026-09-15 06:48:36 | 2026-09-15 06:48:36 | null | null | NONE | [] | null | null | null | null | ### Describe the bug
With probabilities and `stopping_strategy="all_exhausted_without_replacement"`, an empty map-style input can add a duplicate row from another source or cause an out-of-range index. This can happen when filtering one of the datasets before mixing them.
### Steps to reproduce
```python
from datase... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8626/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8626/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8618 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8618/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8618/comments | https://api.github.com/repos/huggingface/datasets/issues/8618/events | https://github.com/huggingface/datasets/issues/8618 | 5,448,559,733 | I_kwDODunzps8AAAABRMJsdQ | 8,618 | `DataFilesList.filter()` leaves `origin_metadata` misaligned with the filtered files | {
"login": "betacatsling",
"id": 113584199,
"node_id": "U_kgDOBsUoRw",
"avatar_url": "https://avatars.githubusercontent.com/u/113584199?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/betacatsling",
"html_url": "https://github.com/betacatsling",
"followers_url": "https://api.github.com/use... | [] | open | false | [] | null | [] | 2026-09-14 11:12:17 | 2026-09-14 11:12:17 | null | null | NONE | [] | null | null | null | null | ## Description
`DataFilesList` keeps `origin_metadata`, a list parallel to the file list where
each entry describes the origin of the file at the same index (e.g. the data
files pattern it was resolved from). After `filter()` removes some files, the
returned `DataFilesList` keeps the *unfiltered* `origin_metadata`, so... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8618/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8618/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8617 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8617/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8617/comments | https://api.github.com/repos/huggingface/datasets/issues/8617/events | https://github.com/huggingface/datasets/issues/8617 | 5,448,559,498 | I_kwDODunzps8AAAABRMJrig | 8,617 | `SplitDict.copy()` crashes when `dataset_name` is not set | {
"login": "betacatsling",
"id": 113584199,
"node_id": "U_kgDOBsUoRw",
"avatar_url": "https://avatars.githubusercontent.com/u/113584199?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/betacatsling",
"html_url": "https://github.com/betacatsling",
"followers_url": "https://api.github.com/use... | [] | open | false | [] | null | [] | 2026-09-14 11:12:15 | 2026-09-14 11:12:15 | null | null | NONE | [] | null | null | null | null | ## Description
`SplitDict.copy()` (and `SplitDict.from_split_dict`) crashes with
`AttributeError: 'SplitInfo' object has no attribute 'get'` whenever the split
dict contains `SplitInfo` objects and `dataset_name` is `None`.
## Reproduction
```python
from datasets import SplitDict, SplitInfo
split_dict = SplitDict({... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8617/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8617/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8612 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8612/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8612/comments | https://api.github.com/repos/huggingface/datasets/issues/8612/events | https://github.com/huggingface/datasets/issues/8612 | 5,433,977,361 | I_kwDODunzps8AAAABQ-PqEQ | 8,612 | load_dataset on a dataset name with no namespace raises HfUriError | {
"login": "ebarkhordar",
"id": 22658149,
"node_id": "MDQ6VXNlcjIyNjU4MTQ5",
"avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/ebarkhordar",
"html_url": "https://github.com/ebarkhordar",
"followers_url": "https://api.github.com/... | [] | open | false | [] | null | [] | 2026-09-12 14:43:32 | 2026-09-12 14:43:32 | null | null | CONTRIBUTOR | [] | null | null | null | null | `load_dataset` on a dataset name with no namespace fails at HEAD and on 5.0.1:
```python
>>> from datasets import load_dataset
>>> load_dataset("imdb", split="train[:5]")
...
File "src/datasets/load.py", line 609, in get_module
standalone_yaml_path = cached_path(
File "src/datasets/utils/file_utils.py", line 1... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8612/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8612/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8608 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8608/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8608/comments | https://api.github.com/repos/huggingface/datasets/issues/8608/events | https://github.com/huggingface/datasets/issues/8608 | 5,430,588,518 | I_kwDODunzps8AAAABQ7A0Zg | 8,608 | `push_to_hub()` keeps stale `dataset_info.features` when re-pushing a single split with different columns | {
"login": "belambert",
"id": 641648,
"node_id": "MDQ6VXNlcjY0MTY0OA==",
"avatar_url": "https://avatars.githubusercontent.com/u/641648?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/belambert",
"html_url": "https://github.com/belambert",
"followers_url": "https://api.github.com/users/bela... | [] | open | false | [] | null | [] | 2026-09-12 02:13:53 | 2026-09-12 02:21:13 | null | null | NONE | [] | null | null | null | null | ### Describe the bug
Re-pushing a dataset's only split with different columns updates the shards and the split
sizes in the README, but silently keeps the **old** `dataset_info.features`. The card then
declares a schema the parquet files no longer have, and the dataset viewer fails on the
first batch with `CastError: ... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8608/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8608/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8596 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8596/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8596/comments | https://api.github.com/repos/huggingface/datasets/issues/8596/events | https://github.com/huggingface/datasets/issues/8596 | 5,413,314,229 | I_kwDODunzps8AAAABQqietQ | 8,596 | load_dataset silently accepts out-of-range ClassLabel indices when the source dtype already matches | {
"login": "caiotheodoro",
"id": 48462974,
"node_id": "MDQ6VXNlcjQ4NDYyOTc0",
"avatar_url": "https://avatars.githubusercontent.com/u/48462974?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/caiotheodoro",
"html_url": "https://github.com/caiotheodoro",
"followers_url": "https://api.github.c... | [] | open | false | [] | null | [
"Hi! I’d like to work on this issue.\n\nI can reproduce the inconsistent behavior between `from_dict()` and `from_json()` / `from_parquet()`, and I’d like to add regression coverage for out-of-range `ClassLabel` indices while keeping the existing fast path intact where possible.\n\nWould you be okay with me working... | 2026-09-10 14:15:14 | 2026-09-16 08:05:39 | null | null | NONE | [] | null | null | null | null | ### Describe the bug
Loading a file whose parsed Arrow dtype already matches a declared `ClassLabel`'s storage type (`int64`) skips the range check entirely. Out-of-range indices load with no error and no warning, and only surface later at `int2str` time or as silently wrong labels during training.
```python
from dat... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8596/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8596/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8595 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8595/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8595/comments | https://api.github.com/repos/huggingface/datasets/issues/8595/events | https://github.com/huggingface/datasets/issues/8595 | 5,413,236,409 | I_kwDODunzps8AAAABQqduuQ | 8,595 | IterableDataset.decode(num_threads) busy-polls its ThreadPool futures, starving the decode threads — 0 rows on remote audio; callback-based bridging restores the intended 20x | {
"login": "HaukurPall",
"id": 9451463,
"node_id": "MDQ6VXNlcjk0NTE0NjM=",
"avatar_url": "https://avatars.githubusercontent.com/u/9451463?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/HaukurPall",
"html_url": "https://github.com/HaukurPall",
"followers_url": "https://api.github.com/users... | [] | open | false | [] | null | [] | 2026-09-10 14:08:03 | 2026-09-10 14:10:28 | null | null | CONTRIBUTOR | [] | null | null | null | null |
### Describe the bug
`decode(num_threads=N)` (added in #7450, "speeds up streaming up to 20 times") schedules the sync `decode_example` calls onto a `multiprocessing.pool.ThreadPool` and bridges them into the async map machinery with a busy-poll (`iterable_dataset.py`):
```python
async def _apply_async(pool, func, x... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8595/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8595/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8590 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8590/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8590/comments | https://api.github.com/repos/huggingface/datasets/issues/8590/events | https://github.com/huggingface/datasets/issues/8590 | 5,391,094,167 | I_kwDODunzps8AAAABQVWRlw | 8,590 | record_checksums default changed True -> False in 4.8.5, not in the release notes | {
"login": "arian-gogani",
"id": 264840462,
"node_id": "U_kgDOD8klDg",
"avatar_url": "https://avatars.githubusercontent.com/u/264840462?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/arian-gogani",
"html_url": "https://github.com/arian-gogani",
"followers_url": "https://api.github.com/use... | [] | open | false | [] | null | [
"I'm adding it to the release notes, thx !",
"Looks like the default for `record_checksums` was switched from True to False in 4.8.5, but it wasn't mentioned in the release notes. This could impact users relying on checksums for data verification.\n"
] | 2026-09-08 19:36:25 | 2026-09-16 23:00:38 | null | null | NONE | [] | null | null | null | null | ### What changed
Between 4.8.4 and 4.8.5, checksum recording flipped from on to off by default in two places. From the sdists:
```
4.8.4 src/datasets/download/download_manager.py:80 record_checksums=True
4.8.5 src/datasets/download/download_manager.py:80 record_checksums=False
4.8.4 src/datasets/utils/info_ut... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8590/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8590/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8572 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8572/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8572/comments | https://api.github.com/repos/huggingface/datasets/issues/8572/events | https://github.com/huggingface/datasets/issues/8572 | 5,368,291,669 | I_kwDODunzps8AAAABP_mhVQ | 8,572 | concatenate_datasets(axis=1) drops the columns of a source with no rows instead of raising | {
"login": "caiotheodoro",
"id": 48462974,
"node_id": "MDQ6VXNlcjQ4NDYyOTc0",
"avatar_url": "https://avatars.githubusercontent.com/u/48462974?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/caiotheodoro",
"html_url": "https://github.com/caiotheodoro",
"followers_url": "https://api.github.c... | [] | open | false | [] | null | [] | 2026-09-06 23:22:23 | 2026-09-06 23:22:23 | null | null | NONE | [] | null | null | null | null |
`concatenate_datasets([ds1, ds2], axis=1)` returns a dataset without `ds2`'s columns when `ds2` has 0 rows, and raises nothing. The row-count check that rejects every other length mismatch never runs.
### Steps to reproduce
```python
from datasets import Dataset, Features, Value, concatenate_datasets
ds1 = Dataset.... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8572/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8572/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8570 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8570/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8570/comments | https://api.github.com/repos/huggingface/datasets/issues/8570/events | https://github.com/huggingface/datasets/issues/8570 | 5,362,996,612 | I_kwDODunzps8AAAABP6jVhA | 8,570 | [zh] Add Simplified Chinese translation for README | {
"login": "JasonYeYuhe",
"id": 69640321,
"node_id": "MDQ6VXNlcjY5NjQwMzIx",
"avatar_url": "https://avatars.githubusercontent.com/u/69640321?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/JasonYeYuhe",
"html_url": "https://github.com/JasonYeYuhe",
"followers_url": "https://api.github.com/... | [] | open | false | [] | null | [] | 2026-09-06 05:02:49 | 2026-09-06 05:02:49 | null | null | NONE | [] | null | null | null | null | ### Motivation
🤗 Datasets is a fundamental library widely used by researchers, data scientists, and developers worldwide, with a large and active Chinese-speaking developer and research community.
Providing an accurate, idiomatic Simplified Chinese translation (`README.zh.md`) along with a language switcher will gre... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8570/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8570/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8568 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8568/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8568/comments | https://api.github.com/repos/huggingface/datasets/issues/8568/events | https://github.com/huggingface/datasets/issues/8568 | 5,362,814,486 | I_kwDODunzps8AAAABP6YOFg | 8,568 | skip() after split_dataset_by_node gives every rank the whole dataset | {
"login": "ebarkhordar",
"id": 22658149,
"node_id": "MDQ6VXNlcjIyNjU4MTQ5",
"avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/ebarkhordar",
"html_url": "https://github.com/ebarkhordar",
"followers_url": "https://api.github.com/... | [] | closed | false | [] | null | [] | 2026-09-06 04:19:57 | 2026-09-10 13:35:11 | 2026-09-10 13:35:11 | null | CONTRIBUTOR | [] | null | null | null | null | ### Describe the bug
Calling `.skip()` on an iterable dataset that already went through `split_dataset_by_node` cancels the node split. Each rank then iterates every shard, so a distributed run sees each example `world_size` times.
`SkipExamplesIterable.shard_data_sources` returns `self` when `split_when_sharding` is... | {
"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/lhoest... | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8568/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8568/timeline | null | completed | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8663 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8663/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8663/comments | https://api.github.com/repos/huggingface/datasets/issues/8663/events | https://github.com/huggingface/datasets/issues/8663 | 5,537,226,391 | I_kwDODunzps8AAAABSgtelw | 8,663 | IterableDataset numpy format returns object instead of the declared dtype | {
"login": "Yonghui-Lee",
"id": 49152905,
"node_id": "MDQ6VXNlcjQ5MTUyOTA1",
"avatar_url": "https://avatars.githubusercontent.com/u/49152905?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/Yonghui-Lee",
"html_url": "https://github.com/Yonghui-Lee",
"followers_url": "https://api.github.com/... | [] | open | false | [] | null | [] | 2026-09-22 08:39:29 | 2026-09-22 08:41:52 | null | null | NONE | [] | null | null | null | null | ### Describe the bug
`NumpyFormatter._consolidate` builds a typed array only when every element is an `np.ndarray`. numpy **scalars** are `np.number`, not `np.ndarray`.
### Face 1 — `IterableDataset.batch()` on an arrow-backed dataset
`.batch()` regroups via a Python transpose
(`_batch_fn = lambda unbatched: {k: [v]... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8663/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8663/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8659 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8659/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8659/comments | https://api.github.com/repos/huggingface/datasets/issues/8659/events | https://github.com/huggingface/datasets/issues/8659 | 5,529,142,676 | I_kwDODunzps8AAAABSZAFlA | 8,659 | TranslationVariableLanguages crashes on empty translations with declared languages | {
"login": "HuaTNA",
"id": 126794161,
"node_id": "U_kgDOB465sQ",
"avatar_url": "https://avatars.githubusercontent.com/u/126794161?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/HuaTNA",
"html_url": "https://github.com/HuaTNA",
"followers_url": "https://api.github.com/users/HuaTNA/follower... | [] | open | false | [] | null | [] | 2026-09-21 15:38:25 | 2026-09-21 15:38:25 | null | null | NONE | [] | null | null | null | null | ## Describe the bug
With an explicit language list, `TranslationVariableLanguages.encode_example()`
raises `ValueError: not enough values to unpack (expected 2, got 0)` for `{}`,
`{"en": []}`, or `{"en": [], "fr": []}`. The same inputs also prevent
`Dataset.from_dict()` from constructing a dataset.
The equivalent alr... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8659/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8659/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8653 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8653/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8653/comments | https://api.github.com/repos/huggingface/datasets/issues/8653/events | https://github.com/huggingface/datasets/issues/8653 | 5,526,093,910 | I_kwDODunzps8AAAABSWGAVg | 8,653 | Long lock filenames do not provide mutual exclusion across Python processes | {
"login": "Yang1107-wzy",
"id": 193335484,
"node_id": "U_kgDOC4YQvA",
"avatar_url": "https://avatars.githubusercontent.com/u/193335484?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/Yang1107-wzy",
"html_url": "https://github.com/Yang1107-wzy",
"followers_url": "https://api.github.com/use... | [] | open | false | [] | null | [] | 2026-09-21 11:02:34 | 2026-09-21 11:02:34 | null | null | NONE | [] | null | null | null | null | ### Describe the bug
`FileLock.hash_filename_if_too_long()` uses Python's `hash(filename)` to shorten long lock filenames. String hashes vary between independently started Python processes, so two processes given the same long lock path can lock different files and both enter the protected section.
This affects paths... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8653/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8653/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8637 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8637/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8637/comments | https://api.github.com/repos/huggingface/datasets/issues/8637/events | https://github.com/huggingface/datasets/issues/8637 | 5,492,155,234 | I_kwDODunzps8AAAABR1ujYg | 8,637 | FileLock wrapper drops timeout and every other constructor argument | {
"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": "ht... | [] | open | false | [] | null | [
"Correction to the environment section above, found while testing a change that touches this wrapper.\n\nThis is filelock-version dependent, and filelock 4.0.0 already fixes it. Same probe, same `datasets` commit, only the filelock version differing:\n\n| filelock | `FileLock(p, timeout=5).timeout` | second `FileLo... | 2026-09-17 20:04:06 | 2026-09-17 21:04:15 | null | null | CONTRIBUTOR | [] | null | null | null | null | ### Describe the bug
`datasets.utils._filelock.FileLock` silently discards every keyword argument except `lock_file`. Passing `timeout=` has no effect, and `is_singleton=True` raises instead of returning the cached lock.
The wrapper declares a variadic signature:
```python
# src/datasets/utils/_filelock.py
def __ini... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8637/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8637/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8626 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8626/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8626/comments | https://api.github.com/repos/huggingface/datasets/issues/8626/events | https://github.com/huggingface/datasets/issues/8626 | 5,458,588,402 | I_kwDODunzps8AAAABRVty8g | 8,626 | Probabilistic interleave without replacement samples empty datasets | {
"login": "HaokaiDing",
"id": 226810271,
"node_id": "U_kgDODYTZnw",
"avatar_url": "https://avatars.githubusercontent.com/u/226810271?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/HaokaiDing",
"html_url": "https://github.com/HaokaiDing",
"followers_url": "https://api.github.com/users/Hao... | [] | open | false | [] | null | [] | 2026-09-15 06:48:36 | 2026-09-15 06:48:36 | null | null | NONE | [] | null | null | null | null | ### Describe the bug
With probabilities and `stopping_strategy="all_exhausted_without_replacement"`, an empty map-style input can add a duplicate row from another source or cause an out-of-range index. This can happen when filtering one of the datasets before mixing them.
### Steps to reproduce
```python
from datase... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8626/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8626/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8618 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8618/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8618/comments | https://api.github.com/repos/huggingface/datasets/issues/8618/events | https://github.com/huggingface/datasets/issues/8618 | 5,448,559,733 | I_kwDODunzps8AAAABRMJsdQ | 8,618 | `DataFilesList.filter()` leaves `origin_metadata` misaligned with the filtered files | {
"login": "betacatsling",
"id": 113584199,
"node_id": "U_kgDOBsUoRw",
"avatar_url": "https://avatars.githubusercontent.com/u/113584199?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/betacatsling",
"html_url": "https://github.com/betacatsling",
"followers_url": "https://api.github.com/use... | [] | open | false | [] | null | [] | 2026-09-14 11:12:17 | 2026-09-14 11:12:17 | null | null | NONE | [] | null | null | null | null | ## Description
`DataFilesList` keeps `origin_metadata`, a list parallel to the file list where
each entry describes the origin of the file at the same index (e.g. the data
files pattern it was resolved from). After `filter()` removes some files, the
returned `DataFilesList` keeps the *unfiltered* `origin_metadata`, so... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8618/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8618/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8617 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8617/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8617/comments | https://api.github.com/repos/huggingface/datasets/issues/8617/events | https://github.com/huggingface/datasets/issues/8617 | 5,448,559,498 | I_kwDODunzps8AAAABRMJrig | 8,617 | `SplitDict.copy()` crashes when `dataset_name` is not set | {
"login": "betacatsling",
"id": 113584199,
"node_id": "U_kgDOBsUoRw",
"avatar_url": "https://avatars.githubusercontent.com/u/113584199?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/betacatsling",
"html_url": "https://github.com/betacatsling",
"followers_url": "https://api.github.com/use... | [] | open | false | [] | null | [] | 2026-09-14 11:12:15 | 2026-09-14 11:12:15 | null | null | NONE | [] | null | null | null | null | ## Description
`SplitDict.copy()` (and `SplitDict.from_split_dict`) crashes with
`AttributeError: 'SplitInfo' object has no attribute 'get'` whenever the split
dict contains `SplitInfo` objects and `dataset_name` is `None`.
## Reproduction
```python
from datasets import SplitDict, SplitInfo
split_dict = SplitDict({... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8617/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8617/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8612 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8612/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8612/comments | https://api.github.com/repos/huggingface/datasets/issues/8612/events | https://github.com/huggingface/datasets/issues/8612 | 5,433,977,361 | I_kwDODunzps8AAAABQ-PqEQ | 8,612 | load_dataset on a dataset name with no namespace raises HfUriError | {
"login": "ebarkhordar",
"id": 22658149,
"node_id": "MDQ6VXNlcjIyNjU4MTQ5",
"avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/ebarkhordar",
"html_url": "https://github.com/ebarkhordar",
"followers_url": "https://api.github.com/... | [] | open | false | [] | null | [] | 2026-09-12 14:43:32 | 2026-09-12 14:43:32 | null | null | CONTRIBUTOR | [] | null | null | null | null | `load_dataset` on a dataset name with no namespace fails at HEAD and on 5.0.1:
```python
>>> from datasets import load_dataset
>>> load_dataset("imdb", split="train[:5]")
...
File "src/datasets/load.py", line 609, in get_module
standalone_yaml_path = cached_path(
File "src/datasets/utils/file_utils.py", line 1... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8612/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8612/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8608 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8608/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8608/comments | https://api.github.com/repos/huggingface/datasets/issues/8608/events | https://github.com/huggingface/datasets/issues/8608 | 5,430,588,518 | I_kwDODunzps8AAAABQ7A0Zg | 8,608 | `push_to_hub()` keeps stale `dataset_info.features` when re-pushing a single split with different columns | {
"login": "belambert",
"id": 641648,
"node_id": "MDQ6VXNlcjY0MTY0OA==",
"avatar_url": "https://avatars.githubusercontent.com/u/641648?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/belambert",
"html_url": "https://github.com/belambert",
"followers_url": "https://api.github.com/users/bela... | [] | open | false | [] | null | [] | 2026-09-12 02:13:53 | 2026-09-12 02:21:13 | null | null | NONE | [] | null | null | null | null | ### Describe the bug
Re-pushing a dataset's only split with different columns updates the shards and the split
sizes in the README, but silently keeps the **old** `dataset_info.features`. The card then
declares a schema the parquet files no longer have, and the dataset viewer fails on the
first batch with `CastError: ... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8608/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8608/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8596 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8596/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8596/comments | https://api.github.com/repos/huggingface/datasets/issues/8596/events | https://github.com/huggingface/datasets/issues/8596 | 5,413,314,229 | I_kwDODunzps8AAAABQqietQ | 8,596 | load_dataset silently accepts out-of-range ClassLabel indices when the source dtype already matches | {
"login": "caiotheodoro",
"id": 48462974,
"node_id": "MDQ6VXNlcjQ4NDYyOTc0",
"avatar_url": "https://avatars.githubusercontent.com/u/48462974?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/caiotheodoro",
"html_url": "https://github.com/caiotheodoro",
"followers_url": "https://api.github.c... | [] | open | false | [] | null | [
"Hi! I’d like to work on this issue.\n\nI can reproduce the inconsistent behavior between `from_dict()` and `from_json()` / `from_parquet()`, and I’d like to add regression coverage for out-of-range `ClassLabel` indices while keeping the existing fast path intact where possible.\n\nWould you be okay with me working... | 2026-09-10 14:15:14 | 2026-09-16 08:05:39 | null | null | NONE | [] | null | null | null | null | ### Describe the bug
Loading a file whose parsed Arrow dtype already matches a declared `ClassLabel`'s storage type (`int64`) skips the range check entirely. Out-of-range indices load with no error and no warning, and only surface later at `int2str` time or as silently wrong labels during training.
```python
from dat... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8596/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8596/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8595 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8595/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8595/comments | https://api.github.com/repos/huggingface/datasets/issues/8595/events | https://github.com/huggingface/datasets/issues/8595 | 5,413,236,409 | I_kwDODunzps8AAAABQqduuQ | 8,595 | IterableDataset.decode(num_threads) busy-polls its ThreadPool futures, starving the decode threads — 0 rows on remote audio; callback-based bridging restores the intended 20x | {
"login": "HaukurPall",
"id": 9451463,
"node_id": "MDQ6VXNlcjk0NTE0NjM=",
"avatar_url": "https://avatars.githubusercontent.com/u/9451463?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/HaukurPall",
"html_url": "https://github.com/HaukurPall",
"followers_url": "https://api.github.com/users... | [] | open | false | [] | null | [] | 2026-09-10 14:08:03 | 2026-09-10 14:10:28 | null | null | CONTRIBUTOR | [] | null | null | null | null |
### Describe the bug
`decode(num_threads=N)` (added in #7450, "speeds up streaming up to 20 times") schedules the sync `decode_example` calls onto a `multiprocessing.pool.ThreadPool` and bridges them into the async map machinery with a busy-poll (`iterable_dataset.py`):
```python
async def _apply_async(pool, func, x... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8595/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8595/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8590 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8590/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8590/comments | https://api.github.com/repos/huggingface/datasets/issues/8590/events | https://github.com/huggingface/datasets/issues/8590 | 5,391,094,167 | I_kwDODunzps8AAAABQVWRlw | 8,590 | record_checksums default changed True -> False in 4.8.5, not in the release notes | {
"login": "arian-gogani",
"id": 264840462,
"node_id": "U_kgDOD8klDg",
"avatar_url": "https://avatars.githubusercontent.com/u/264840462?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/arian-gogani",
"html_url": "https://github.com/arian-gogani",
"followers_url": "https://api.github.com/use... | [] | open | false | [] | null | [
"I'm adding it to the release notes, thx !",
"Looks like the default for `record_checksums` was switched from True to False in 4.8.5, but it wasn't mentioned in the release notes. This could impact users relying on checksums for data verification.\n"
] | 2026-09-08 19:36:25 | 2026-09-16 23:00:38 | null | null | NONE | [] | null | null | null | null | ### What changed
Between 4.8.4 and 4.8.5, checksum recording flipped from on to off by default in two places. From the sdists:
```
4.8.4 src/datasets/download/download_manager.py:80 record_checksums=True
4.8.5 src/datasets/download/download_manager.py:80 record_checksums=False
4.8.4 src/datasets/utils/info_ut... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8590/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8590/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8572 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8572/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8572/comments | https://api.github.com/repos/huggingface/datasets/issues/8572/events | https://github.com/huggingface/datasets/issues/8572 | 5,368,291,669 | I_kwDODunzps8AAAABP_mhVQ | 8,572 | concatenate_datasets(axis=1) drops the columns of a source with no rows instead of raising | {
"login": "caiotheodoro",
"id": 48462974,
"node_id": "MDQ6VXNlcjQ4NDYyOTc0",
"avatar_url": "https://avatars.githubusercontent.com/u/48462974?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/caiotheodoro",
"html_url": "https://github.com/caiotheodoro",
"followers_url": "https://api.github.c... | [] | open | false | [] | null | [] | 2026-09-06 23:22:23 | 2026-09-06 23:22:23 | null | null | NONE | [] | null | null | null | null |
`concatenate_datasets([ds1, ds2], axis=1)` returns a dataset without `ds2`'s columns when `ds2` has 0 rows, and raises nothing. The row-count check that rejects every other length mismatch never runs.
### Steps to reproduce
```python
from datasets import Dataset, Features, Value, concatenate_datasets
ds1 = Dataset.... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8572/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8572/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8570 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8570/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8570/comments | https://api.github.com/repos/huggingface/datasets/issues/8570/events | https://github.com/huggingface/datasets/issues/8570 | 5,362,996,612 | I_kwDODunzps8AAAABP6jVhA | 8,570 | [zh] Add Simplified Chinese translation for README | {
"login": "JasonYeYuhe",
"id": 69640321,
"node_id": "MDQ6VXNlcjY5NjQwMzIx",
"avatar_url": "https://avatars.githubusercontent.com/u/69640321?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/JasonYeYuhe",
"html_url": "https://github.com/JasonYeYuhe",
"followers_url": "https://api.github.com/... | [] | open | false | [] | null | [] | 2026-09-06 05:02:49 | 2026-09-06 05:02:49 | null | null | NONE | [] | null | null | null | null | ### Motivation
🤗 Datasets is a fundamental library widely used by researchers, data scientists, and developers worldwide, with a large and active Chinese-speaking developer and research community.
Providing an accurate, idiomatic Simplified Chinese translation (`README.zh.md`) along with a language switcher will gre... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8570/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8570/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8568 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8568/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8568/comments | https://api.github.com/repos/huggingface/datasets/issues/8568/events | https://github.com/huggingface/datasets/issues/8568 | 5,362,814,486 | I_kwDODunzps8AAAABP6YOFg | 8,568 | skip() after split_dataset_by_node gives every rank the whole dataset | {
"login": "ebarkhordar",
"id": 22658149,
"node_id": "MDQ6VXNlcjIyNjU4MTQ5",
"avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/ebarkhordar",
"html_url": "https://github.com/ebarkhordar",
"followers_url": "https://api.github.com/... | [] | closed | false | [] | null | [] | 2026-09-06 04:19:57 | 2026-09-10 13:35:11 | 2026-09-10 13:35:11 | null | CONTRIBUTOR | [] | null | null | null | null | ### Describe the bug
Calling `.skip()` on an iterable dataset that already went through `split_dataset_by_node` cancels the node split. Each rank then iterates every shard, so a distributed run sees each example `world_size` times.
`SkipExamplesIterable.shard_data_sources` returns `self` when `split_when_sharding` is... | {
"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/lhoest... | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8568/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8568/timeline | null | completed | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8560 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8560/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8560/comments | https://api.github.com/repos/huggingface/datasets/issues/8560/events | https://github.com/huggingface/datasets/issues/8560 | 5,341,909,251 | I_kwDODunzps8AAAABPmcRAw | 8,560 | Bump fsspec to 2026.7.0 | {
"login": "roshanjrajan",
"id": 13341160,
"node_id": "MDQ6VXNlcjEzMzQxMTYw",
"avatar_url": "https://avatars.githubusercontent.com/u/13341160?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/roshanjrajan",
"html_url": "https://github.com/roshanjrajan",
"followers_url": "https://api.github.c... | [] | closed | false | [] | null | [] | 2026-09-03 22:02:32 | 2026-09-10 13:34:43 | 2026-09-10 13:34:43 | null | CONTRIBUTOR | [] | null | null | null | null | Would it be possible to bump fsspec upper bound to 2026.7.0?
Can open a PR! | {
"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/lhoest... | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8560/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8560/timeline | null | completed | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8543 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8543/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8543/comments | https://api.github.com/repos/huggingface/datasets/issues/8543/events | https://github.com/huggingface/datasets/issues/8543 | 5,308,784,806 | I_kwDODunzps8AAAABPG2gpg | 8,543 | xPath.glob passes double-wrapped storage options to url_to_fs | {
"login": "ebarkhordar",
"id": 22658149,
"node_id": "MDQ6VXNlcjIyNjU4MTQ5",
"avatar_url": "https://avatars.githubusercontent.com/u/22658149?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/ebarkhordar",
"html_url": "https://github.com/ebarkhordar",
"followers_url": "https://api.github.com/... | [] | open | false | [] | null | [
"#self-assign\n",
"#self-assign"
] | 2026-09-01 06:58:36 | 2026-09-01 08:48:03 | null | null | CONTRIBUTOR | [] | null | null | null | null | ### Describe the bug
`xPath.glob` adds a second protocol key to the storage options before passing them to `url_to_fs`, so fsspec receives `https={'https': {...}}` instead of `https={...}`.
`_prepare_path_and_storage_options` already returns them protocol keyed, and the docstring of `_prepare_single_hop_path_and_stor... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8543/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8543/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8537 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8537/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8537/comments | https://api.github.com/repos/huggingface/datasets/issues/8537/events | https://github.com/huggingface/datasets/issues/8537 | 5,291,992,964 | I_kwDODunzps8AAAABO21nhA | 8,537 | JPEG XL support | {
"login": "StableLlama",
"id": 155108577,
"node_id": "U_kgDOCT7E4Q",
"avatar_url": "https://avatars.githubusercontent.com/u/155108577?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/StableLlama",
"html_url": "https://github.com/StableLlama",
"followers_url": "https://api.github.com/users/... | [] | open | false | [] | null | [
"I think we just need to make sure Pillow can load such images, and if we need a plugin of some sort or no.\n\nIn the Viewer images will appear on browsers that support JXL",
"For Pillow you have e.g. https://pypi.org/project/pillow-jxl-plugin/\n\nFor the Dataset Viewer and the Data Studio I don't see any images,... | 2026-08-30 12:13:56 | 2026-09-02 18:34:32 | null | null | NONE | [] | null | null | null | null | It seems that the dataset don't support JXL natively in the same ways as e.g. PNG and JPEG are supported. A JPEG XL is supported by an international ISO standard, gives great compression ratios, finally supports lossless for JPEG and the browser support is now starting to get wide spread (safari has it for some time ->... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8537/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8537/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8522 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8522/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8522/comments | https://api.github.com/repos/huggingface/datasets/issues/8522/events | https://github.com/huggingface/datasets/issues/8522 | 5,277,366,650 | I_kwDODunzps8AAAABOo45eg | 8,522 | Docs proposal: relabel left/right segmentation classes during horizontal flips | {
"login": "ternaus",
"id": 5481618,
"node_id": "MDQ6VXNlcjU0ODE2MTg=",
"avatar_url": "https://avatars.githubusercontent.com/u/5481618?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/ternaus",
"html_url": "https://github.com/ternaus",
"followers_url": "https://api.github.com/users/ternaus/... | [] | open | false | [] | null | [
"Hi! Opening a PR for this docs request.\n\nAdded a section that flips image/mask together and swaps the directional label pairs on the human parsing dataset, plus an optional AlbumentationsX mapping for folks who already use that stack.\n\n#self-assign"
] | 2026-08-28 10:39:42 | 2026-09-02 03:48:31 | null | null | CONTRIBUTOR | [] | null | null | null | null | ### Feature request
Would you be open to a self-contained documentation recipe showing how to relabel directional semantic classes during a horizontal flip? It could be a separate section in [`docs/source/semantic_segmentation.mdx`](https://github.com/huggingface/datasets/blob/main/docs/source/semantic_segmentation.md... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8522/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8522/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
https://api.github.com/repos/huggingface/datasets/issues/8511 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8511/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8511/comments | https://api.github.com/repos/huggingface/datasets/issues/8511/events | https://github.com/huggingface/datasets/issues/8511 | 5,233,130,028 | I_kwDODunzps8AAAABN-s6LA | 8,511 | `Image.cast_storage` warns about downcasting int64 to uint8 for storage that is already uint8 | {
"login": "albertvillanova",
"id": 8515462,
"node_id": "MDQ6VXNlcjg1MTU0NjI=",
"avatar_url": "https://avatars.githubusercontent.com/u/8515462?v=4",
"gravatar_id": "",
"url": "https://api.github.com/users/albertvillanova",
"html_url": "https://github.com/albertvillanova",
"followers_url": "https://api.g... | [] | open | false | [] | null | [] | 2026-08-24 09:23:22 | 2026-08-24 09:23:22 | null | null | MEMBER | [] | null | null | null | null | ### Describe the bug
Casting a nested-list column whose Arrow value type is already `uint8` to `Image()` emits a spurious warning:
```
UserWarning: Downcasting array dtype int64 to uint8 to be compatible with 'Pillow'
```
No downcast is actually needed. The Arrow storage type is `list<item: list<item: list<item: uin... | null | {
"url": "https://api.github.com/repos/huggingface/datasets/issues/8511/reactions",
"total_count": 0,
"+1": 0,
"-1": 0,
"laugh": 0,
"hooray": 0,
"confused": 0,
"heart": 0,
"rocket": 0,
"eyes": 0
} | https://api.github.com/repos/huggingface/datasets/issues/8511/timeline | null | null | {"total":0,"completed":0,"percent_completed":0} | {"blocked_by":0,"total_blocked_by":0,"blocking":0,"total_blocking":0} | null | false |
End of preview. Expand in Data Studio
README.md exists but content is empty.
- Downloads last month
- 33