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https://api.github.com/repos/huggingface/datasets/issues/8049 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8049/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8049/comments | https://api.github.com/repos/huggingface/datasets/issues/8049/events | https://github.com/huggingface/datasets/pull/8049 | 4,032,135,159 | PR_kwDODunzps7IZR_m | 8,049 | Fix typos in iterable_dataset.py | {
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https://api.github.com/repos/huggingface/datasets/issues/8048 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8048/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8048/comments | https://api.github.com/repos/huggingface/datasets/issues/8048/events | https://github.com/huggingface/datasets/issues/8048 | 4,031,613,102 | I_kwDODunzps7wTYiu | 8,048 | Support 3D Datasets | {
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] | open | false | [] | null | [] | 2026-03-06T01:23:08 | 2026-03-06T11:57:06 | null | null | NONE | null | null | null | null | ### Feature request
In `datasets` library we have options to load `image` and `audio` datasets which can be viewed in the Dataset Viewer.
LIKE:
```bash
from datasets import load_dataset, Image
from datasets import load_dataset, Audio
```
> https://huggingface.co/docs/datasets/en/image_load & https://huggingface.co/do... | null | {
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} | When using `Dataset.map()` with `num_proc > 1`, shards containing only empty lists get their features inferred as `List(Value('null'))`, which is incompatible with `List(Struct({...}))` from shards with actual data.
The existing `_check_if_features_can_be_aligned` and `_align_features` only handled top-level `Value(... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8046 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8046/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8046/comments | https://api.github.com/repos/huggingface/datasets/issues/8046/events | https://github.com/huggingface/datasets/issues/8046 | 4,030,348,328 | I_kwDODunzps7wOjwo | 8,046 | `Dataset.map()` with `num_proc > 1` fails when some shards produce `List(Value('null'))` (empty lists) | {
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"\n### Root cause\n\nIn `src/datasets/features/features.py`, both `_check_if_features_can_be_aligned` and `_align_features` use:\n\n```python\nisinstance(v, Value) and v.dtype == \"null\"\n```\n\nto check for null compatibility. However, `List(Value('null'))` is **not** an instance of `Value` — it's an instance of ... | 2026-03-05T20:12:13 | 2026-03-05T20:12:35 | null | null | NONE | null | null | null | null | ### Describe the bug
When using `Dataset.map()` with `num_proc > 1`, if the map function produces a list column where some shards contain only empty lists `[]` and other shards contain non-empty lists of structs, the feature type inference is inconsistent across shards:
- Shards with only empty lists → `List(Value('n... | null | {
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"I've tested this change along with the changes from my other PRs (https://github.com/HaukurPall/datasets/tree/all-fixes) and this change **dramatically** reduces the memory requirement per process.\r\n\r\nContext:\r\n\r\nI'm working with audio datasets, the audio is embedded in the parquet. When loading a 1GB shar... | 2026-03-05T15:13:53 | 2026-03-06T11:47:00 | null | null | NONE | null | null | false | {
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`pa.concat_tables(list(...))` before writing. For datasets with large shards and multiprocessing (push_to_hub with num_proc > 0) the memory requirements can be really large.
This PR writes parquet incrementally by iterating Arrow batches a... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8044 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8044/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8044/comments | https://api.github.com/repos/huggingface/datasets/issues/8044/events | https://github.com/huggingface/datasets/pull/8044 | 4,028,042,275 | PR_kwDODunzps7IMNl4 | 8,044 | Fix silent data loss in push_to_hub when num_proc > num_shards | {
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} | ## Summary
When `num_proc` exceeds the number of output shards in `Dataset.push_to_hub`, workers
without assigned output shards silently drop their data. The metadata still reports the
correct dataset length (using `len(self[split])`), masking the data loss.
This fix caps `num_jobs` at `num_shards` in `_push_pa... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8042 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8042/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8042/comments | https://api.github.com/repos/huggingface/datasets/issues/8042/events | https://github.com/huggingface/datasets/pull/8042 | 4,027,903,841 | PR_kwDODunzps7ILwT5 | 8,042 | Fix schema enforcement in streaming _convert_to_arrow | {
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https://api.github.com/repos/huggingface/datasets/issues/8040 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8040/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8040/comments | https://api.github.com/repos/huggingface/datasets/issues/8040/events | https://github.com/huggingface/datasets/pull/8040 | 4,025,912,223 | PR_kwDODunzps7IFFnG | 8,040 | Fix the logic for allowed extensions when creating build configurations (#8034) | {
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https://api.github.com/repos/huggingface/datasets/issues/8039 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8039/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8039/comments | https://api.github.com/repos/huggingface/datasets/issues/8039/events | https://github.com/huggingface/datasets/pull/8039 | 4,025,811,123 | PR_kwDODunzps7IEv9Z | 8,039 | Fix non-deterministic by sorting metadata extensions (#8034) | {
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https://api.github.com/repos/huggingface/datasets/issues/8038 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8038/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8038/comments | https://api.github.com/repos/huggingface/datasets/issues/8038/events | https://github.com/huggingface/datasets/issues/8038 | 4,020,184,168 | I_kwDODunzps7vnyRo | 8,038 | Typo in iterable_dataset.py | {
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`streaming=True**kwargs,` should be `streaming=True, **kwargs,`
https://github.com/huggingface/datasets/blob/81027be09d5cd9f06a6d64ef1a8a3e9ebd0f86fd/src/datasets/iterable_dataset.py#L2950
### Steps to reproduce the bug
```
from Datasets import Dataset
IterableDataset.from_csv("file.csv")
```
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https://api.github.com/repos/huggingface/datasets/issues/8037 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8037/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8037/comments | https://api.github.com/repos/huggingface/datasets/issues/8037/events | https://github.com/huggingface/datasets/issues/8037 | 4,008,928,790 | I_kwDODunzps7u82YW | 8,037 | IterableDataset.filter() chaining fails due to features being lost when is_typed=True | {
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Chaining multiple .filter() calls on an IterableDataset raises a TypeError: 'NoneType' object is not a mapping on the second .filter() call.
In `IterableDataset.filter()`, the internal `ex_iterable` is wrapped with FormattedExamplesIterable:
```python
ex_iterable = FormattedExamplesIterable(
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https://api.github.com/repos/huggingface/datasets/issues/8036 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8036/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8036/comments | https://api.github.com/repos/huggingface/datasets/issues/8036/events | https://github.com/huggingface/datasets/pull/8036 | 4,006,914,206 | PR_kwDODunzps7HHMKn | 8,036 | follow `cache_dir` in download option when loading datasets | {
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https://api.github.com/repos/huggingface/datasets/issues/8035 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8035/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8035/comments | https://api.github.com/repos/huggingface/datasets/issues/8035/events | https://github.com/huggingface/datasets/pull/8035 | 4,005,673,675 | PR_kwDODunzps7HDPtk | 8,035 | Update links in README to use markdown format | {
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https://api.github.com/repos/huggingface/datasets/issues/8034 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8034/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8034/comments | https://api.github.com/repos/huggingface/datasets/issues/8034/events | https://github.com/huggingface/datasets/issues/8034 | 4,004,188,523 | I_kwDODunzps7uqxFr | 8,034 | [BUG] load_datasets() cannot use the generated Arrow cache correctly | {
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"PYTHONHASHSEED=1 uv run python -c\n \"\nfrom datasets.load import LocalDatasetModuleFactory\nmod = LocalDatasetModuleFactory('/cache/datasets/imagenet-1k')\ndm = mod.get_module()\nprint('Hash:', dm.hash)\n\"\nResolving data files: 100%|█████████| 294/294 [00:00<00:00, 20584.68it/s]\nResolving data files: 100%|████... | 2026-02-28T08:11:23 | 2026-03-04T13:50:08 | null | null | NONE | null | null | null | null | ### Describe the bug
The datasets library cannot use the generated Arrow cache correctly, seemingly due to a flaw in the internal hash symbol calculation logic.
The following code provides verification.
I am trying to locate the specific code position, and if there are further developments, I will update here.
### S... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8033 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8033/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8033/comments | https://api.github.com/repos/huggingface/datasets/issues/8033/events | https://github.com/huggingface/datasets/pull/8033 | 4,003,917,950 | PR_kwDODunzps7G-QP1 | 8,033 | perf: use deque for async map task/index queues | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_8033). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"Friendly ping — CI is green and this is ready for review. Happy to address any feedback... | 2026-02-28T05:07:00 | 2026-02-28T21:32:44 | null | null | NONE | null | null | false | {
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} | ## Problem
`arrow_dataset.py` and `iterable_dataset.py` drain `indices` and `tasks` lists front-to-back via `.pop(0)` during parallel async map operations. With `MAX_NUM_RUNNING_ASYNC_MAP_FUNCTIONS_IN_PARALLEL` items in flight, each `.pop(0)` is **O(n)** making the drain loop **O(n²)**.
## Solution
Switch both `indi... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8032 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8032/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8032/comments | https://api.github.com/repos/huggingface/datasets/issues/8032/events | https://github.com/huggingface/datasets/pull/8032 | 4,003,285,460 | PR_kwDODunzps7G8PQ8 | 8,032 | set dev version | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_8032). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
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https://api.github.com/repos/huggingface/datasets/issues/8031 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8031/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8031/comments | https://api.github.com/repos/huggingface/datasets/issues/8031/events | https://github.com/huggingface/datasets/pull/8031 | 4,003,278,631 | PR_kwDODunzps7G8N4w | 8,031 | release: 4.6.1 | {
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https://api.github.com/repos/huggingface/datasets/issues/8030 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8030/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8030/comments | https://api.github.com/repos/huggingface/datasets/issues/8030/events | https://github.com/huggingface/datasets/pull/8030 | 4,003,238,887 | PR_kwDODunzps7G8F4x | 8,030 | Remove tmp file in push to hub | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_8030). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
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https://api.github.com/repos/huggingface/datasets/issues/8029 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8029/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8029/comments | https://api.github.com/repos/huggingface/datasets/issues/8029/events | https://github.com/huggingface/datasets/issues/8029 | 4,001,742,455 | I_kwDODunzps7uhb53 | 8,029 | `cache_dir` option in `download_config` in `load_dataset` is not respected | {
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"Actually, I used debugger to step into the code of `datasets`, and found `load_dataset` calls into `cached_path`, where it calls into `hf_hub_download` method for `hf://` links:\nhttps://github.com/huggingface/datasets/blob/6e8eaeed4d202b72eff44ba1a9ec5b7d81d2d3e6/src/datasets/utils/file_utils.py#L182-L195\n\nSome... | 2026-02-27T16:05:30 | 2026-02-27T23:34:28 | null | null | NONE | null | null | null | null | ### Describe the bug
Downloaded files still go to `~/.cache/huggingface/hub/` even if I specified `cache_dir` option in `download_config` in `load_dataset`.
### Steps to reproduce the bug
Run my freshly written script and found that downloaded files did not go where I want.
```python
'''
下载OpenWebText数据集，允许使用代理
'''
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https://api.github.com/repos/huggingface/datasets/issues/8028 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8028/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8028/comments | https://api.github.com/repos/huggingface/datasets/issues/8028/events | https://github.com/huggingface/datasets/pull/8028 | 4,000,313,779 | PR_kwDODunzps7GybfA | 8,028 | Fix torchcodec audio decoding to respect 'num_channels' | {
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} | Fixes torchcodec audio decoding when `num_channels` is set on `Audio`.
Before this change, `AudioDecoder["array"]` reduced multi-channel audio to mono by averaging channels, so the requested channel behavior was not respected.
With this PR:
- multi-channel decoded arrays are preserved by default;
- mono output ... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8027 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8027/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8027/comments | https://api.github.com/repos/huggingface/datasets/issues/8027/events | https://github.com/huggingface/datasets/pull/8027 | 3,997,153,282 | PR_kwDODunzps7GoGjP | 8,027 | Add `Json()` type | {
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} | `Json()` type is needed when some fields don't have fixed types, e.g. "tools" and "tool_calls" types in conversation + tool calling datasets like [dataclaw](https://huggingface.co/datasets?other=dataclaw) datasets. Cc @peteromallet and @woctordho @Nanbeige for viz
Examples of supported tool-calling / dataclaw datase... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8026 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8026/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8026/comments | https://api.github.com/repos/huggingface/datasets/issues/8026/events | https://github.com/huggingface/datasets/pull/8026 | 3,989,139,119 | PR_kwDODunzps7GNnFC | 8,026 | set dev version | {
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https://api.github.com/repos/huggingface/datasets/issues/8025 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8025/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8025/comments | https://api.github.com/repos/huggingface/datasets/issues/8025/events | https://github.com/huggingface/datasets/pull/8025 | 3,989,040,394 | PR_kwDODunzps7GNSUF | 8,025 | release: 4.6.0 | {
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https://api.github.com/repos/huggingface/datasets/issues/8024 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8024/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8024/comments | https://api.github.com/repos/huggingface/datasets/issues/8024/events | https://github.com/huggingface/datasets/pull/8024 | 3,983,877,502 | PR_kwDODunzps7F8QeB | 8,024 | Allow import polars in map() | {
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https://api.github.com/repos/huggingface/datasets/issues/8023 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8023/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8023/comments | https://api.github.com/repos/huggingface/datasets/issues/8023/events | https://github.com/huggingface/datasets/pull/8023 | 3,983,829,205 | PR_kwDODunzps7F8GUT | 8,023 | Support empty shard in from_generator | {
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https://api.github.com/repos/huggingface/datasets/issues/8022 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8022/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8022/comments | https://api.github.com/repos/huggingface/datasets/issues/8022/events | https://github.com/huggingface/datasets/pull/8022 | 3,983,057,516 | PR_kwDODunzps7F5eYs | 8,022 | fix: resolve base_path conflict between builder_kwargs and config_kwargs | {
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} | ## What does this PR fix?
This PR fixes a bug where passing `base_path` to `load_dataset_builder()` or `load_dataset()` causes a TypeError because both `builder_kwargs` and `config_kwargs` can contain the same key.
## Problem
When users call:
```python
from datasets import load_dataset
load_dataset("rotten_tomatoes"... | {
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https://api.github.com/repos/huggingface/datasets/issues/8021 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8021/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8021/comments | https://api.github.com/repos/huggingface/datasets/issues/8021/events | https://github.com/huggingface/datasets/pull/8021 | 3,981,426,772 | PR_kwDODunzps7F0FmV | 8,021 | progress bar optional manual control | {
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"Hi @lhoestq ,\r\nCan you please trigger the CI CD pipeline ?",
"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_8021). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"@lhoestq I have appli... | 2026-02-24T04:22:17 | 2026-03-02T05:08:37 | null | null | CONTRIBUTOR | null | null | false | {
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} | Fix: https://github.com/huggingface/datasets/issues/7939
Summary
The default behavior for the progress bar has been adjusted based on dataset size. It remains enabled for small datasets and is automatically disabled for larger datasets to improve performance. Users retain full control and can explicitly enable or... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8020 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8020/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8020/comments | https://api.github.com/repos/huggingface/datasets/issues/8020/events | https://github.com/huggingface/datasets/pull/8020 | 3,977,114,662 | PR_kwDODunzps7Fl8mj | 8,020 | feat: add return_file_name support to Parquet packaged builder | {
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} | Part of #5806. Extends the `return_file_name` feature (implemented for JSON in #7948 and CSV in #8019) to the Parquet packaged builder. When `return_file_name=True`, a `file_name` column containing the source file basename is appended to each batch. | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8019 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8019/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8019/comments | https://api.github.com/repos/huggingface/datasets/issues/8019/events | https://github.com/huggingface/datasets/pull/8019 | 3,977,073,546 | PR_kwDODunzps7Flz15 | 8,019 | feat: add return_file_name support to CSV packaged builder | {
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} | ## Summary
- Adds an optional `return_file_name: bool = False` parameter to `CsvConfig`
- When `return_file_name=True`, a `file_name` column is appended to every batch in `_generate_tables`, containing the basename of the source CSV file for each row
- Default is `False`, preserving full backward compatibility
## Mot... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8017 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8017/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8017/comments | https://api.github.com/repos/huggingface/datasets/issues/8017/events | https://github.com/huggingface/datasets/pull/8017 | 3,975,274,092 | PR_kwDODunzps7FgERR | 8,017 | Improve error message for deprecated dataset scripts with migration guidance | {
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"Hi team! I’m just checking in on this PR to see if there is any additional information or documentation I can provide to help with the review process. Thanks for your time!"
] | 2026-02-22T19:31:34 | 2026-02-28T14:24:11 | null | null | NONE | null | null | false | {
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} | Summary
This PR improves the RuntimeError message raised when deprecated local dataset scripts are detected.
Previously, the error message:
"Dataset scripts are no longer supported"
did not provide actionable migration guidance.
Improvements
- Clarifies the new architecture
- Provides explicit migration step... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8016 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8016/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8016/comments | https://api.github.com/repos/huggingface/datasets/issues/8016/events | https://github.com/huggingface/datasets/pull/8016 | 3,974,759,572 | PR_kwDODunzps7FecuC | 8,016 | Remove legacy Sphinx roles from docstrings | {
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} | ## Summary
Replace all remaining `:obj:`, `:class:`, `:func:`, and `:meth:` Sphinx cross-reference roles with plain backtick references, aligning with the project's current documentation conventions.
**14 files, 71 replacements. No logic changes.**
## Context
As noted in #5324, the codebase had a mix of old Sphinx ... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8015 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8015/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8015/comments | https://api.github.com/repos/huggingface/datasets/issues/8015/events | https://github.com/huggingface/datasets/issues/8015 | 3,974,281,900 | I_kwDODunzps7s4rqs | 8,015 | Iterating a streaming dataset correctly in random order | {
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"Hi, reshuffling is actually pretty easy:\n\n```python\n\"\"\" shuffle.py \"\"\"\nfrom datasets import load_dataset\n\nnum_proc = 8 # tweak it here depending on your machine\nseed = 42\nds = load_dataset(\"jackyhate/text-to-image-2M\", num_proc=num_proc)\nds = ds.shuffle(seed=seed)\nds.push_to_hub(\"my-username/te... | 2026-02-22T11:34:06 | 2026-02-26T18:09:27 | null | null | NONE | null | null | null | null | ### Describe the bug
For training to work properly it is considered good practice in machine learning to sample the dataset randomly (uniformly). I am not sure how the user is expected to do it correctly when the creator of the dataset did a bad job.
https://huggingface.co/docs/hub/datasets-webdataset
```
**Shuffle*... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8014 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8014/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8014/comments | https://api.github.com/repos/huggingface/datasets/issues/8014/events | https://github.com/huggingface/datasets/pull/8014 | 3,972,099,737 | PR_kwDODunzps7FV93G | 8,014 | Speed up local 'get_data_patterns' by avoiding repeated recursive scans | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_8014). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"> lgtm ! can you run `make style` to fix the CI before we merge ?\r\n\r\ndone. All good... | 2026-02-21T14:11:40 | 2026-02-25T20:07:50 | null | null | NONE | null | null | false | {
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} | This PR speeds up `get_data_patterns` for local paths.
### Problem
For `load_dataset("imagefolder", data_dir=...)`, `get_data_patterns` was repeatedly scanning the same local directory tree for many split patterns (`train`, `test`, etc.).
With large folders, this became very slow. This has also been reported b... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8013 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8013/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8013/comments | https://api.github.com/repos/huggingface/datasets/issues/8013/events | https://github.com/huggingface/datasets/pull/8013 | 3,964,156,070 | PR_kwDODunzps7E8Ovb | 8,013 | Add space between sentences 'operation.To debug' | {
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} | Previously the exception message would read "...abruptly died during map _operation.To_ debug the error...".
The `operation.To` part would actually render as a hyperlink when printed to Slack. | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8012 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8012/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8012/comments | https://api.github.com/repos/huggingface/datasets/issues/8012/events | https://github.com/huggingface/datasets/issues/8012 | 3,963,855,875 | I_kwDODunzps7sQ6QD | 8,012 | HC3 dataset fails to load with datasets>=3 due to legacy script (HC3.py) | {
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"This is not a bug. This is intended behaviour. The only ways to resolve this are\n1. use the old `datasets` versions\n2. load the dataset and upload it to your own repo without a script\n3. raise an issue in the dataset and wait for the owner to update it."
] | 2026-02-19T16:27:51 | 2026-02-20T11:58:20 | 2026-02-20T11:58:20 | null | NONE | null | null | null | null | ### Describe the bug
It looks like the current documentation suggests loading the dataset like this:
`load_dataset("Hello-SimpleAI/HC3", split="train")
`
But with datasets>=3.x, this raises:
RuntimeError: Dataset scripts are no longer supported, but found HC3.py
The dataset loads correctly if we specify the parqu... | {
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https://api.github.com/repos/huggingface/datasets/issues/8011 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8011/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8011/comments | https://api.github.com/repos/huggingface/datasets/issues/8011/events | https://github.com/huggingface/datasets/pull/8011 | 3,963,479,811 | PR_kwDODunzps7E59Pn | 8,011 | fix: condition for file_name feature check | {
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"Hi @lhoestq, have proposed a fix for [#8010](https://github.com/huggingface/datasets/issues/8010)"
] | 2026-02-19T15:12:31 | 2026-02-19T15:29:29 | 2026-02-19T15:29:29 | null | NONE | null | null | false | {
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} | ## Description
Accept `Value("large_string")` in addition to `Value("string")` for the `file_name` (or `*_file_name`) metadata key in folder-based builders (e.g. `audiofolder`).
## Problem
When loading a dataset with `load_dataset("audiofolder", data_dir=...)` and a `metadata.csv` file, the metadata schema is infe... | {
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https://api.github.com/repos/huggingface/datasets/issues/8010 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8010/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8010/comments | https://api.github.com/repos/huggingface/datasets/issues/8010/events | https://github.com/huggingface/datasets/issues/8010 | 3,963,448,558 | I_kwDODunzps7sPWzu | 8,010 | audiofolder / folder-based loader rejects metadata.csv when file_name column is inferred as large_string | {
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"Proposing a PR for this [here](https://github.com/huggingface/datasets/pull/8011)\n\nPS: I didn't find a contributing documentation. Please recommend any changes in issue or PR if any. Thank you!"
] | 2026-02-19T15:06:09 | 2026-02-19T15:29:41 | 2026-02-19T15:29:41 | null | NONE | null | null | null | null | ### Describe the bug
When loading a dataset with load_dataset("audiofolder", data_dir=...) and a metadata.csv (with a file_name column), loading can fail with:
`ValueError: file_name or *_file_name must be present as dictionary key (with type string) in metadata files`
even when the CSV clearly has a file_name colum... | {
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https://api.github.com/repos/huggingface/datasets/issues/8009 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8009/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8009/comments | https://api.github.com/repos/huggingface/datasets/issues/8009/events | https://github.com/huggingface/datasets/pull/8009 | 3,958,228,652 | PR_kwDODunzps7Eo7KV | 8,009 | More IterableDataset.from_x methods and docs and polars.Lazyframe support | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_8009). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-02-18T14:48:39 | 2026-02-18T15:18:17 | 2026-02-18T15:18:14 | null | MEMBER | null | null | false | {
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https://api.github.com/repos/huggingface/datasets/issues/8007 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8007/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8007/comments | https://api.github.com/repos/huggingface/datasets/issues/8007/events | https://github.com/huggingface/datasets/issues/8007 | 3,946,695,329 | I_kwDODunzps7rPcqh | 8,007 | Add option for loading audio with video | {
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"Hi,\nI’m interested in working on this issue.\n\nFrom what I understand, audio decoding would involve an AudioDecoder, and previous discussions have suggested handling it separately. I’d like to explore whether integrating audio extraction in relation to the current video decoding workflow would be appropriate, or... | 2026-02-16T09:11:02 | 2026-02-16T15:56:21 | null | null | NONE | null | null | null | null | ### Describe the bug
Currently, `torchcodec` don't allow extracting `Audio` from `Video` https://github.com/meta-pytorch/torchcodec/issues/1158, but when I upload videos with audio to hub using `videofolder`, then this is not possible to retrieve audio from it. Probably `VideoDecoder` can be extended with `audio` para... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8006 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8006/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8006/comments | https://api.github.com/repos/huggingface/datasets/issues/8006/events | https://github.com/huggingface/datasets/issues/8006 | 3,944,394,074 | I_kwDODunzps7rGq1a | 8,006 | Regression: from_generator crashes if one generator call returns no results | {
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Dataset.from_generator splits any list kwarg to the generator and makes a separate call to the generator for each member of the list even in the num_proc=1 case.
I have a generator that processes a number of files, filtering them and producing examples. It used to be the case that things worked fi... | {
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https://api.github.com/repos/huggingface/datasets/issues/8005 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8005/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8005/comments | https://api.github.com/repos/huggingface/datasets/issues/8005/events | https://github.com/huggingface/datasets/issues/8005 | 3,941,908,297 | I_kwDODunzps7q9L9J | 8,005 | Multi-channel audio is automatically cast to mono, num_channels is ignored | {
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"**Workaround**\nDirectly load audio using torchcodec, this is what datasets does under the hood (but doesn't maintain multi-channel)\n\n```python\nimport torchcodec\n\ndecoder = torchcodec.decoders.AudioDecoder(audio[\"bytes\"])\naudio_samples = decoder.get_all_samples()\n\naudio = audio_samples.data.numpy()\nsamp... | 2026-02-14T17:28:03 | 2026-02-25T15:17:18 | null | null | NONE | null | null | null | null | ### Describe the bug
The `num_channels` parameter in `datasets.Audio()` is documented to preserve stereo channels when set to `None` (preserve original) or `2` (explicit stereo), but it currently downmixes all audio to mono regardless of this setting.
### Steps to reproduce the bug
```python
import numpy as np
impor... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8004 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8004/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8004/comments | https://api.github.com/repos/huggingface/datasets/issues/8004/events | https://github.com/huggingface/datasets/pull/8004 | 3,939,675,475 | PR_kwDODunzps7DsCBM | 8,004 | fix save_to_disk/load_from_disk with pathlib.Path input | {
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} | Since #6704, `save_to_disk` and `load_from_disk` use `fsspec.core.url_to_fs` which expects a `str`, but both methods accept `PathLike` (which includes `pathlib.Path`). Passing a `Path` object raises a `TypeError` because `url_to_fs` can't handle it.
Fixed by converting the path argument with `os.fspath()` before handi... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8003 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8003/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8003/comments | https://api.github.com/repos/huggingface/datasets/issues/8003/events | https://github.com/huggingface/datasets/pull/8003 | 3,938,501,557 | PR_kwDODunzps7DoBmp | 8,003 | very basic support for more hf urls | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_8003). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-02-13T18:30:56 | 2026-02-13T18:47:58 | 2026-02-13T18:47:57 | null | MEMBER | null | null | false | {
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https://api.github.com/repos/huggingface/datasets/issues/8002 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8002/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8002/comments | https://api.github.com/repos/huggingface/datasets/issues/8002/events | https://github.com/huggingface/datasets/issues/8002 | 3,937,013,814 | I_kwDODunzps7qqhA2 | 8,002 | The `Sequence` class in features do not have "dtype" | {
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**I'm not sure if this is a bug.**
I see that a `FeatureType` object contains an attribute called `self.dtype` that is not covered when this feature is a `Sequence` or a `List`.
When I try to run a multilabel classification with this example script from the transformers library:
https://github.... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/8000 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/8000/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/8000/comments | https://api.github.com/repos/huggingface/datasets/issues/8000/events | https://github.com/huggingface/datasets/pull/8000 | 3,919,504,253 | PR_kwDODunzps7CpK9i | 8,000 | Fix: make environment variable naming consistent (issue #7998) | {
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"Hi @lhoestq ,\r\nI’ve addressed the inconsistent environment variable name HF_DATASETS_DISABLE_PROGRESS_BARS in docstrings and warning messages. Please review the changes and let me know if there’s anything else I should update to complete this issue fix."
] | 2026-02-10T05:19:53 | 2026-02-16T15:29:49 | 2026-02-16T15:29:49 | null | CONTRIBUTOR | null | null | false | {
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"merged_at": "2026-02-16T15:29... | Fix: https://github.com/huggingface/datasets/issues/7998
**Summary**
Addressed the inconsistent environment variable name HF_DATASETS_DISABLE_PROGRESS_BARS used for toggling progress bars, particularly in docstrings and warning messages.
**Changes**
Updated function docstrings to use the correct environment... | {
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https://api.github.com/repos/huggingface/datasets/issues/7999 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7999/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7999/comments | https://api.github.com/repos/huggingface/datasets/issues/7999/events | https://github.com/huggingface/datasets/issues/7999 | 3,915,367,642 | I_kwDODunzps7pX8Ta | 7,999 | Too many dataloader workers: 4 (max is dataset.num_shards=3). Stopping 1 dataloader workers. | {
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"Hi, thanks for the clear question and code snippet!\n\nFrom my understanding, **hf_dataset.num_shards** represents the number of actual iterable partitions that the streaming dataset can be read from in parallel. This is not the same as the number of underlying Parquet files—many files can be grouped into a much s... | 2026-02-09T09:26:37 | 2026-02-15T14:25:56 | null | null | NONE | null | null | null | null | Hi !
I’m working on training with a large-scale dataset (100+ Parquet files) using lazy loading, and I’m struggling to understand/optimize the num_shards setting— in the lerobot repo: streaming_datasets.py:
```
from datasets import load_dataset
self.hf_dataset: datasets.IterableDataset = load_dataset(
self.... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7998 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7998/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7998/comments | https://api.github.com/repos/huggingface/datasets/issues/7998/events | https://github.com/huggingface/datasets/issues/7998 | 3,912,624,238 | I_kwDODunzps7pNehu | 7,998 | [doc] Inconsistant ENV VAR Name for Progress Bar Toggle | {
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https://github.com/huggingface/datasets/blob/025593f2f0722f31fc136e0ae45da4ff44d4416a/src/datasets/config.py#L221-L226
Docstrings and warnings report env var name `HF_DATASETS_DISABLE_PROGRESS_BAR` without the ending `S`.
https://github.com/huggingface/data... | {
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https://api.github.com/repos/huggingface/datasets/issues/7997 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7997/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7997/comments | https://api.github.com/repos/huggingface/datasets/issues/7997/events | https://github.com/huggingface/datasets/pull/7997 | 3,912,160,109 | PR_kwDODunzps7CRNIl | 7,997 | fix: Dataset.map writer initialization when first examples return None | {
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"Closing in favor of #7996 which addresses the same issue with the same fix."
] | 2026-02-08T07:02:00 | 2026-02-11T08:23:06 | 2026-02-11T08:23:06 | null | NONE | null | null | false | {
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} | Fixes #7990
## Summary
When Dataset.map is called and the first examples processed return None, the writer is never properly initialized, causing a ValueError.
## Changes
- Modified _map_single to initialize the writer early if the first batch returns empty results
- Ensures writer is set before the first call to w... | {
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https://api.github.com/repos/huggingface/datasets/issues/7996 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7996/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7996/comments | https://api.github.com/repos/huggingface/datasets/issues/7996/events | https://github.com/huggingface/datasets/pull/7996 | 3,912,066,322 | PR_kwDODunzps7CQ6GC | 7,996 | Fix Dataset.map writer initialization when early examples return None | {
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"Friendly ping - any chance someone could take a look at this when they get a chance? Happy to make any changes if needed."
] | 2026-02-08T05:52:45 | 2026-02-19T04:58:58 | null | null | NONE | null | null | false | {
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} | ## Summary
Fixes #7990
This PR fixes a bug in `Dataset.map()` where the writer initialization was incorrectly tied to the index being 0, causing crashes when the map function returns `None` for the first few examples and later returns a dict.
### Changes
- **Non-batched mode** (line 3676): Changed from `if i == 0:... | null | {
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"Apologize for the ping @lhoestq but I wanted to know whether this is something you could look into? And more generally whether you have a policy to regularly bump fsspec? Thanks 🙏",
"thanks for opening a PR, I'm triggering the CI and I'll merge if it's all green :)",
"The docs for this PR live [here](https://... | 2026-02-08T05:43:15 | 2026-02-16T15:28:59 | 2026-02-16T15:28:59 | null | CONTRIBUTOR | null | null | false | {
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https://api.github.com/repos/huggingface/datasets/issues/7994 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7994/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7994/comments | https://api.github.com/repos/huggingface/datasets/issues/7994/events | https://github.com/huggingface/datasets/issues/7994 | 3,906,330,806 | I_kwDODunzps7o1eC2 | 7,994 | Bump fsspec upper bound constraint | {
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I saw you had some API compat issues in the past (https://github.com/huggingface/datasets/issues/7326) and I understand the need for an upper bound.
But I wonder if you think your CI and tests are a good proxy to catch fsspec API breakage? If t... | {
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https://api.github.com/repos/huggingface/datasets/issues/7993 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7993/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7993/comments | https://api.github.com/repos/huggingface/datasets/issues/7993/events | https://github.com/huggingface/datasets/pull/7993 | 3,898,606,021 | PR_kwDODunzps7Bkr3F | 7,993 | :sparkles: Add 'SparseCsv' builder and 'sparse_collate_fn' for efficient high-dimensional sparse data loading | {
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} | This PR introduces a new dataset builder, SparseCsv, designed to handle "wide" tabular datasets (e.g., 100k+ columns common in transcriptomics, sparse NLP features, or recommender systems) that are typically too large to load into memory as dense Arrow tables.
It also adds a utility function, `sparse_collate_fn`, to... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7992 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7992/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7992/comments | https://api.github.com/repos/huggingface/datasets/issues/7992/events | https://github.com/huggingface/datasets/pull/7992 | 3,897,848,157 | PR_kwDODunzps7BiJps | 7,992 | Add `IterableDataset.reshard()` | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7992). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-02-04T18:24:41 | 2026-02-04T18:55:38 | 2026-02-04T18:55:35 | null | MEMBER | null | null | false | {
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"merged_at": "2026-02-04T18:55... | To increase the number of shards of a dataset, you can use [`IterableDataset.reshard`]:
```py
>>> dataset
IterableDataset({
features: ['label', 'title', 'content'],
num_shards: 4
})
>>> dataset.reshard()
IterableDataset({
features: ['label', 'title', 'content'],
num_shards: 3600
})
```
... | {
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https://api.github.com/repos/huggingface/datasets/issues/7991 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7991/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7991/comments | https://api.github.com/repos/huggingface/datasets/issues/7991/events | https://github.com/huggingface/datasets/issues/7991 | 3,896,884,513 | I_kwDODunzps7oRb0h | 7,991 | list(api.list_datasets()) giving jsondecode error | {
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```
from huggingface_hub import HfApi
a... | {
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https://api.github.com/repos/huggingface/datasets/issues/7990 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7990/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7990/comments | https://api.github.com/repos/huggingface/datasets/issues/7990/events | https://github.com/huggingface/datasets/issues/7990 | 3,895,870,826 | I_kwDODunzps7oNkVq | 7,990 | Dataset.map crashes when first examples return None and later examples return dict — writer not initialized | {
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I detected a serious [bug from datasets/arrow_dataset.py](https://github.com/huggingface/datasets/blob/main/src/datasets/arrow_dataset.py#L3676)
---
**Description of the bug**
`Dataset.map` crashes with `writer is None` when the map function returns `None` for the first few examples and a diction... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7989 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7989/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7989/comments | https://api.github.com/repos/huggingface/datasets/issues/7989/events | https://github.com/huggingface/datasets/pull/7989 | 3,895,613,949 | PR_kwDODunzps7BaxDx | 7,989 | Remove pre-release workaround in CI for `transformers v5` and `huggingface_hub v1` | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7989). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-02-04T09:42:49 | 2026-02-04T15:20:04 | 2026-02-04T15:20:02 | null | CONTRIBUTOR | null | null | false | {
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"merged_at": "2026-02-04T15:20... | This PR removes workaround for pre-release `transformers v5.*` / `huggingface_hub v1.*` in `test_py314_future` job since they are now officially released.
cc @Wauplin just for viz since you introduced this in https://github.com/huggingface/datasets/pull/7783. | {
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https://api.github.com/repos/huggingface/datasets/issues/7988 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7988/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7988/comments | https://api.github.com/repos/huggingface/datasets/issues/7988/events | https://github.com/huggingface/datasets/issues/7988 | 3,895,353,435 | I_kwDODunzps7oLmBb | 7,988 | `Dataset.map()` breaks when `function` calls `import polars as pl` and `num_proc`>1: "UnboundLocalError: cannot access local variable 'pl' where it is not associated with a value" | {
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# Repro
These two conditions seem to consistently reproduce the issue:
- function passed to `Dataset.map()` explicitly or implicitly calls `import polars as pl`
- `num_proc` > 1
# Trace
```
RemoteTraceback Traceback (most recent call last)
RemoteTraceback:
"""
Traceback... | {
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https://api.github.com/repos/huggingface/datasets/issues/7987 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7987/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7987/comments | https://api.github.com/repos/huggingface/datasets/issues/7987/events | https://github.com/huggingface/datasets/pull/7987 | 3,894,713,494 | PR_kwDODunzps7BX0pY | 7,987 | Fix index out of bound error with original_shard_lengths. | {
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} | I have gotten the following error
```
original_shard_lengths[original_shard_id] += 1
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
IndexError: list index out of range
```
Not sure what causes it, but this fixes the error. This may not be the proper fix for the root cause though. | null | {
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"I suggest metion this in docs specifically for attention with use, tell users explicitly to pass arguments with `fn_kwargs` param or using `functools.partial` to create a pure funcion."
] | 2026-02-03T19:16:49 | 2026-02-06T08:38:13 | null | null | NONE | null | null | null | null | ### Describe the bug
When using `.map()` with a function defined inside a **class (of which has any non-deterministic states)** method (a closure), if that function captures `self` to access a configuration variable (e.g., self.foo), the fingerprint mechanism serializes the entire class instance state.
If the class i... | null | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7985). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
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e.g. the lance dataset at https://huggingface.co/datasets/davanstrien/encyclopaedia-britannica-lance has > 200 metadata files
those optims are not used anymore, they come from a time we were dealing with slow data files iterators instead of lists | {
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https://api.github.com/repos/huggingface/datasets/issues/7983 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7983/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7983/comments | https://api.github.com/repos/huggingface/datasets/issues/7983/events | https://github.com/huggingface/datasets/pull/7983 | 3,888,225,779 | PR_kwDODunzps7BCJgV | 7,983 | Add Zarr streaming support (POC) | {
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"Hi! It looks like the GitHub Actions check suites for this PR are in `action_required` (no workflows actually ran). This is usually due to fork workflow approval.\n\nCould a maintainer please approve/run the workflows so CI can execute? Happy to address anything CI flags once it runs.",
"The docs for this PR liv... | 2026-02-03T00:06:46 | 2026-03-03T09:39:30 | null | null | NONE | null | null | false | {
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} | Add initial Zarr streaming support (POC).
This introduces a `zarr` packaged module and docs/tests to validate basic loading.
Note: I pushed a follow-up commit to fix an accidental duplication in `benchmarks/benchmark_zarr_streaming.py` (file now contains a single benchmark script). | null | {
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"Hi! It looks like the GitHub Actions check suites for this PR are in `action_required` (no workflows actually ran). This is usually due to fork workflow approval.\n\nCould a maintainer please approve/run the workflows so CI can execute? Happy to address anything CI flags once it runs.",
"Quick ping on this one. ... | 2026-02-02T23:34:51 | 2026-03-03T09:39:40 | null | null | NONE | null | null | false | {
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} | Fix unstable dataset fingerprinting when hashing `PreTrainedTokenizerFast`.
Some tokenizers backed by `tokenizers.Tokenizer` mutate runtime settings (padding/truncation) when called, which can change the serialized state and make dataset fingerprints unstable. That prevents `.map(load_from_cache_file=True)` from reusi... | null | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7981). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-02-02T17:16:37 | 2026-02-02T17:34:25 | 2026-02-02T17:34:22 | null | MEMBER | null | null | false | {
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https://api.github.com/repos/huggingface/datasets/issues/7980 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7980/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7980/comments | https://api.github.com/repos/huggingface/datasets/issues/7980/events | https://github.com/huggingface/datasets/pull/7980 | 3,886,785,042 | PR_kwDODunzps7A9Wrj | 7,980 | Drop python 3.9 | {
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https://api.github.com/repos/huggingface/datasets/issues/7979 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7979/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7979/comments | https://api.github.com/repos/huggingface/datasets/issues/7979/events | https://github.com/huggingface/datasets/pull/7979 | 3,886,772,007 | PR_kwDODunzps7A9T06 | 7,979 | Use temp files in push_to_hub to save memory | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7979). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"And they are never deleted?",
"Just to be clear @lhoestq, by not deleting the files o... | 2026-02-02T16:10:38 | 2026-02-27T23:28:51 | 2026-02-02T16:26:14 | null | MEMBER | null | null | false | {
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this is enabled for for datasets loaded using streaming=True/False | {
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} | Fix #4910 : Merge duplicate kwargs in `load_dataset_builder()`
Problem: load_dataset("dataset", base_path="./data")` gives TypeError("multiple values for keyword 'base_path')
Fix: {**builder_kwargs, **config_kwargs} to user kwargs override dataset defaults
Repro : python
Before: TypeError
load_dataset("r... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7977 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7977/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7977/comments | https://api.github.com/repos/huggingface/datasets/issues/7977/events | https://github.com/huggingface/datasets/pull/7977 | 3,879,142,697 | PR_kwDODunzps7AkMoM | 7,977 | Updated get_dataset_config_names returning default in offline mode | {
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https://api.github.com/repos/huggingface/datasets/issues/7976 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7976/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7976/comments | https://api.github.com/repos/huggingface/datasets/issues/7976/events | https://github.com/huggingface/datasets/pull/7976 | 3,879,038,987 | PR_kwDODunzps7Aj2hP | 7,976 | Write image/audio/video blobs as is in parquet (PLAIN) | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7976). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-01-31T11:49:39 | 2026-02-03T20:03:48 | 2026-01-31T11:50:33 | null | MEMBER | null | null | false | {
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https://api.github.com/repos/huggingface/datasets/issues/7975 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7975/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7975/comments | https://api.github.com/repos/huggingface/datasets/issues/7975/events | https://github.com/huggingface/datasets/pull/7975 | 3,878,625,407 | PR_kwDODunzps7AikAO | 7,975 | Docs: add Dataset.from_dict example | {
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"Quick ping on this one. Happy to update anything if you want changes."
] | 2026-01-31T07:00:43 | 2026-03-03T09:39:47 | null | null | NONE | null | null | false | {
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} | Docs: add a minimal `Dataset.from_dict` example.
This helps new users discover the most direct way to build a small dataset from in-memory Python data.
Docs-only change. | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7974 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7974/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7974/comments | https://api.github.com/repos/huggingface/datasets/issues/7974/events | https://github.com/huggingface/datasets/pull/7974 | 3,878,625,349 | PR_kwDODunzps7Aij_g | 7,974 | Fix duplicate kwargs in load_dataset_builder | {
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"Quick ping on this one. Happy to update anything if you want changes."
] | 2026-01-31T07:00:39 | 2026-03-03T09:39:50 | null | null | NONE | null | null | false | {
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} | Avoid passing duplicate keyword arguments to `load_dataset_builder`.
Some module factories provide values in `builder_kwargs` (e.g. `base_path`), and users can also pass the same keys via `config_kwargs`, which raises:
`TypeError: ... got multiple values for keyword argument ...`.
Fix: if `config_kwargs` is provided,... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7973 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7973/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7973/comments | https://api.github.com/repos/huggingface/datasets/issues/7973/events | https://github.com/huggingface/datasets/pull/7973 | 3,878,514,101 | PR_kwDODunzps7AiMd8 | 7,973 | Fix resolve_pattern for local symlinked files | {
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"Hi! It looks like the GitHub Actions check suites for this PR are in `action_required` (no workflows actually ran). This is usually due to fork workflow approval.\n\nCould a maintainer please approve/run the workflows so CI can execute? Happy to address anything CI flags once it runs.",
"The docs for this PR liv... | 2026-01-31T06:04:51 | 2026-03-03T09:39:33 | null | null | NONE | null | null | false | {
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} | Fix `resolve_pattern` for *local symlinked files*.
Problem: on the local `file://` filesystem, `fsspec` can report symlinks as `type=="other"` and omit the `islink` flag, so symlinked files are skipped.
Fix: when `protocol=="file"`, treat `os.path.islink(filepath)` as a link candidate and include it if it resolves to... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7972 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7972/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7972/comments | https://api.github.com/repos/huggingface/datasets/issues/7972/events | https://github.com/huggingface/datasets/pull/7972 | 3,874,083,781 | PR_kwDODunzps7AT07I | 7,972 | feat: implement iter_arrow for skip, take and step iterables | {
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} | This commit optimizes streaming operations by implementing [_iter_arrow](cci:1://file:///c:/Users/ASUS/Desktop/datasets/src/datasets/iterable_dataset.py:377:4-391:57) for [SkipExamplesIterable](cci:2://file:///c:/Users/ASUS/Desktop/datasets/src/datasets/iterable_dataset.py:1798:0-1892:42), [TakeExamplesIterable](cci:2:... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7971 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7971/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7971/comments | https://api.github.com/repos/huggingface/datasets/issues/7971/events | https://github.com/huggingface/datasets/pull/7971 | 3,871,984,311 | PR_kwDODunzps7AMzLl | 7,971 | push_to_hub() for videos | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7971). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-01-29T18:16:58 | 2026-01-31T11:50:25 | 2026-01-29T18:56:04 | null | MEMBER | null | null | false | {
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"merged_at": "2026-01-29T18:56... | possible now that row group sizes are auto-determined based on the content size after https://github.com/huggingface/datasets/pull/7589
Videos are uploaded as PLAIN in Parquet to make sure they can be seeked remotely and with random access to frames in https://github.com/huggingface/datasets/pull/7976
In the futu... | {
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https://api.github.com/repos/huggingface/datasets/issues/7970 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7970/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7970/comments | https://api.github.com/repos/huggingface/datasets/issues/7970/events | https://github.com/huggingface/datasets/issues/7970 | 3,869,700,866 | I_kwDODunzps7mpvMC | 7,970 | cast_column(..., Audio) fails with load_dataset("csv",) | {
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"The following code *does* work:\n```py\nfrom datasets import load_dataset,Audio,Features\n\ndataset = load_dataset(\"csv\",data_files=\"audio.csv\",features=Features({\"audio\": Audio()}))\nprint(dataset[\"train\"][0][\"audio\"])\n```",
"Thanks for reporing ! Are you using pandas v3 by any chance ? The CSV loade... | 2026-01-29T09:33:35 | 2026-01-29T22:24:14 | null | null | NONE | null | null | null | null | ### Describe the bug
Attempt to load a dataset from a csv with a single `audio` column with a single row with a path to an audio file fails when casting the column to Audio, but the exact same dataset created from a dictionary succeeds.
### Steps to reproduce the bug
1. Have any valid audio file `audio.wav`
2. Have ... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7969 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7969/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7969/comments | https://api.github.com/repos/huggingface/datasets/issues/7969/events | https://github.com/huggingface/datasets/pull/7969 | 3,865,100,307 | PR_kwDODunzps6_1p9H | 7,969 | Count examples in lance | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7969). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-01-28T12:00:37 | 2026-01-28T13:00:26 | 2026-01-28T13:00:23 | null | MEMBER | null | null | false | {
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"merged_at": "2026-01-28T13:00... | ```python
In [1]: from datasets import load_dataset_builder, StreamingDownloadManager
In [2]: b = load_dataset_builder("lance-format/openvid-lance")
Resolving data files: 100%|█| 240/240 [00:00<00:00, 42675.64it/s
In [3]: b.count_examples(StreamingDownloadManager())
Out[3]: {'train': 937957}
``` | {
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https://api.github.com/repos/huggingface/datasets/issues/7968 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7968/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7968/comments | https://api.github.com/repos/huggingface/datasets/issues/7968/events | https://github.com/huggingface/datasets/issues/7968 | 3,864,988,355 | I_kwDODunzps7mXwrD | 7,968 | Potential conflicting type checks and dead code in `/src/datasets/table.py` | {
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"ConcatenationTable is a subclass of datasets.table.Table but not pa.Table, so it should be fine"
] | 2026-01-28T11:34:53 | 2026-01-28T13:05:28 | null | null | NONE | null | null | null | null | When statically analyzing and manually reviewing the code, I noticed a potential logic conflicting in `/src/datasets/table.py` as follows:
```
def to_blocks(table: Union[pa.Table, Table]) -> list[list[TableBlock]]:
if isinstance(table, pa.Table):
return [[InMemoryTable(table)]]
elif isinstance(ta... | null | {
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Detects bad multiprocessing start_method, fallback happens.
https://github.com/huggingface/datasets/issues/7756 | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7966 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7966/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7966/comments | https://api.github.com/repos/huggingface/datasets/issues/7966/events | https://github.com/huggingface/datasets/pull/7966 | 3,861,774,379 | PR_kwDODunzps6_qp_e | 7,966 | Infer types from lance blobs | {
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```python
from datasets import load_dataset
ds = load_dataset("lance-format/laion-1m", streaming=True, split="train")
print(ds.feature["image"])
# Image... | {
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https://api.github.com/repos/huggingface/datasets/issues/7965 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7965/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7965/comments | https://api.github.com/repos/huggingface/datasets/issues/7965/events | https://github.com/huggingface/datasets/issues/7965 | 3,858,483,549 | I_kwDODunzps7l-8ld | 7,965 | `huggingface_hub.errors.HfHubHTTPError: 404 Client Error: Not Found for url` when fetching a dataset with `datasets.load_dataset` | {
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"Hi ! Yes you should use `cornell-movie-review-data/rotten_tomatoes` instead of `rotten_tomatoes`, which is the legacy name. Those datasets have been moved under their actual owners accounts some time ago (but we were keeping the old names as aliases)\n\nSome other impacted names are:\n- `imdb` -> `stanfordnlp/imdb... | 2026-01-27T02:20:31 | 2026-01-28T15:14:50 | 2026-01-28T15:14:50 | null | NONE | null | null | null | null | Not a bug but a question. We started getting the following error:
https://github.com/mlflow/mlflow/actions/runs/21368603305/job/61506951617
```
ests/data/test_huggingface_dataset_and_source.py::test_from_huggingface_dataset_constructs_expected_dataset_with_revision - huggingface_hub.errors.HfHubHTTPError: 404 Client ... | {
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https://api.github.com/repos/huggingface/datasets/issues/7963 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7963/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7963/comments | https://api.github.com/repos/huggingface/datasets/issues/7963/events | https://github.com/huggingface/datasets/pull/7963 | 3,856,921,322 | PR_kwDODunzps6_ajTD | 7,963 | Support null in json string cols | {
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https://api.github.com/repos/huggingface/datasets/issues/7962 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7962/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7962/comments | https://api.github.com/repos/huggingface/datasets/issues/7962/events | https://github.com/huggingface/datasets/pull/7962 | 3,856,811,005 | PR_kwDODunzps6_aM71 | 7,962 | Use Sequence instead of list in Dataset.from_parquet type hints | {
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"Thank you for the review!\r\n\r\nI’ve updated the implementation to:\r\n- Use Sequence from collections.abc as per project conventions\r\n- Restore backward compatibility with Union[PathLike, Sequence[PathLike]]\r\n- Keep the columns annotation as Optional[Sequence[str]]\r\n\r\nThe fixes are pushed. Please let me ... | 2026-01-26T17:01:47 | 2026-02-04T06:47:52 | null | null | NONE | null | null | false | {
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https://api.github.com/repos/huggingface/datasets/issues/7961 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7961/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7961/comments | https://api.github.com/repos/huggingface/datasets/issues/7961/events | https://github.com/huggingface/datasets/pull/7961 | 3,847,883,164 | PR_kwDODunzps6-9GHz | 7,961 | Revert "feat: avoid some copies in torch formatter (#7787)" | {
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https://api.github.com/repos/huggingface/datasets/issues/7960 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7960/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7960/comments | https://api.github.com/repos/huggingface/datasets/issues/7960/events | https://github.com/huggingface/datasets/pull/7960 | 3,847,601,199 | PR_kwDODunzps6-8Iak | 7,960 | docs: fix grammar and add type hints in splits.py | {
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src/datasets/splits.py
by:
Fixing pluralization/grammar errors in docstrings (Lines 62, 73, 403).
Adding Python type hints to the
NamedSplit
constructor for better code quality.
Verified with ruff format and ruff check. | {
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https://api.github.com/repos/huggingface/datasets/issues/7959 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7959/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7959/comments | https://api.github.com/repos/huggingface/datasets/issues/7959/events | https://github.com/huggingface/datasets/pull/7959 | 3,847,579,785 | PR_kwDODunzps6-8DsQ | 7,959 | docs: fix typo in arrow_dataset.py comment | {
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"@lhoestq tagging you here as you were on the previous issue, hope that's fine. ",
"Thanks for reporting, let me take a look",
"I reverted this change which caused the issue #7961 , I'll do a new release soon but in the meantime feel free to install `datasets` from source",
"@lhoestq thanks a lot. I am actual... | 2026-01-23T12:06:48 | 2026-03-04T13:17:28 | 2026-03-04T13:17:28 | null | NONE | null | null | null | null | ### Describe the bug
The problem is that when calling:
```ds.set_format(type="torch", columns = ["input", "labels"], device="cuda")```
The device type of the individual datapoints is now: `cpu` as opposed to `cuda:0`.
With `v4.0.0` it still works. With `v4.5.0` it doesn't work anymore.
Related Issue:
https://github... | {
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"Hi maintainers 👋 \r\nThis PR fixes `all_exhausted_without_replacement` to ensure all samples are emitted exactly once, \r\nand adds a regression test reproducing the reported issue.\r\n\r\nHappy to adjust the implementation or split changes if you’d prefer.\r\nThanks!\r\n",
"We just merged https://github.com/... | 2026-01-21T18:47:32 | 2026-01-23T16:09:28 | 2026-01-23T16:09:28 | null | NONE | null | null | false | {
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} | Fix interleave_datasets "all_exhausted_without_replacement" stopping strategy
- Corrected logic to ensure each sample is picked exactly once when using
stopping_strategy="all_exhausted_without_replacement".
- Adjusted boolean stopping condition to properly track dataset exhaustion.
- Added test to verify the l... | {
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"Yes, that's a hard limit. Can you split your files into different folders? Or we'll probably have a new repo type in the near to mid future that will relax this limit a bit. ",
"Thanks! Working around this with a different sharding parameter to have fewer overall fragments (and therefore fewer files in `*.lance/... | 2026-01-21T16:37:38 | 2026-01-22T09:38:38 | null | null | NONE | null | null | null | null | ### Feature request
Can the hard limit of 10k files per folder be extended with acceptable loss in performance?
### Motivation
I'm uploading a lance dataset to huggingface hub and have a folder inside lance internals (`data/*.lance/_transactions`) that has > 20k atomic transaction records and my commits are being re... | null | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7955). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-01-21T08:10:45 | 2026-01-24T02:55:56 | 2026-01-23T16:08:39 | null | CONTRIBUTOR | null | null | false | {
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This fix adds a specific branch to handle t... | {
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] | 2026-01-21T07:50:31 | 2026-01-21T08:13:00 | null | null | CONTRIBUTOR | null | null | null | null | ### Describe the bug
>>> from datasets import Dataset, interleave_datasets
>>> d1 = Dataset.from_dict({"a": [0, 1, 2]})
>>> d2 = Dataset.from_dict({"a": [10, 11, 12, 13]})
>>> d3 = Dataset.from_dict({"a": [20, 21, 22]})
>>> dataset = interleave_datasets([d1, d2, d3], stopping_strategy="all_exhausted_without_replacemen... | null | {
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} | \This PR replaces `list` type hints with `Sequence` in `from_parquet` to improve type checking.
Note: Local pytest errors on Python 3.13 due to removal of `distutils` are unrelated to this change.
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} | This PR replaces `list` type hints with `Sequence` in `from_parquet` to improve type checking.
Note: Local pytest errors on Python 3.13 due to removal of `distutils` are unrelated to this change.
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} | ## Summary
Add native support for loading GenBank (.gb, .gbk, .genbank) files, a standard format for biological sequence data with annotations maintained by NCBI.
## Changes
- Add `genbank` packaged module with pure Python state machine parser
- Register GenBank extensions in `_PACKAGED_DATASETS_MODULES` and `_EXTENSI... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7950 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7950/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7950/comments | https://api.github.com/repos/huggingface/datasets/issues/7950/events | https://github.com/huggingface/datasets/pull/7950 | 3,825,689,242 | PR_kwDODunzps69zsW1 | 7,950 | Add examples for Lance datasets | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7950). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"Hi @prrao87 ! All the main examples with pylance should be in their dedicated documenta... | 2026-01-17T19:33:31 | 2026-01-23T16:40:20 | 2026-01-23T16:16:43 | null | CONTRIBUTOR | null | null | false | {
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"merged_at": "2026-01-23T16:16... | ## Summary
Updated the Lance integration docs to match the official dataset cards and expand coverage of multimodal workflows in `use_with_lance.mdx`.
## Details
- Added a Lance format-focused guidance page for multimodal examples:
- Stream from the Hub via `datasets` API
- Use Lance's dataset API to p... | {
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"This PR clarifies the documentation build instructions by improving wording and adding clarity for local builds."
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} | This PR adds an optional `return_file_name` parameter to the JSON dataset loader.
When enabled, a new `file_name` column is added containing the source file name
for each row. Default behavior is unchanged.
Changes:
- Add `return_file_name` to JsonConfig
- Append file name during JSON table generation
- Add t... | null | {
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