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2025-11-05 18:11:12
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https://github.com/huggingface/datasets/pull/7749
7,749
Fix typo in error message for cache directory deletion
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2025-08-26T17:47:22Z
2025-09-12T15:43:08Z
2025-09-12T13:22:18Z
CONTRIBUTOR
false
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This PR fixes a small typo in an error message in `src/datasets/fingerprint.py`: https://github.com/huggingface/datasets/blob/910fab20606893f69b4fccac5fcc883dddf5a14d/src/datasets/fingerprint.py#L63 ```diff - occured + occurred ```
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null
null
null
true
https://github.com/huggingface/datasets/pull/7748
7,748
docs: Streaming best practices
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2025-08-23T00:18:43Z
2025-09-07T02:33:36Z
null
NONE
false
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Add a new 'Streaming best practices' page with practical patterns and pitfalls for large-scale/production use of IterableDataset. Includes examples for batched map with remove_columns, deterministic shuffling with set_epoch, multi-worker sharding, checkpoint/resume, and persistence to Parquet/Hub. Linked from How-to > ...
null
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null
null
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true
https://github.com/huggingface/datasets/pull/7747
7,747
Add wikipedia-2023-redirects dataset
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[ "you should host this dataset on HF with `ds.push_to_hub()` ! we stopped using dataset scripts some time ago" ]
2025-08-22T23:49:53Z
2025-09-12T13:23:34Z
null
NONE
false
{ "diff_url": "https://github.com/huggingface/datasets/pull/7747.diff", "html_url": "https://github.com/huggingface/datasets/pull/7747", "merged_at": null, "patch_url": "https://github.com/huggingface/datasets/pull/7747.patch", "url": "https://api.github.com/repos/huggingface/datasets/pulls/7747" }
Title: Add wikipedia-2023-redirects dataset (redirect resolution + pageviews) Summary - New dataset loader: wikipedia_2023_redirects - Canonical Wikipedia pages enriched with: - redirects (aliases pointing to the page) - 2023 pageviews (aggregated) - Streaming support; robust parsing; license notes included - Test...
null
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true
https://github.com/huggingface/datasets/issues/7746
7,746
Fix: Canonical 'multi_news' dataset is broken and should be updated to a Parquet version
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open
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[ "@sayakpaul @a-r-r-o-w could you verify this issue then i can contribute to solve this issue!😊" ]
2025-08-22T12:52:03Z
2025-08-27T20:23:35Z
null
NONE
null
null
Hi, The canonical `multi_news` dataset is currently broken and fails to load. This is because it points to the [alexfabri/multi_news](https://huggingface.co/datasets/alexfabbri/multi_news) repository, which contains a legacy loading script (`multi_news.py`) that requires the now-removed `trust_remote_code` parameter....
null
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https://github.com/huggingface/datasets/issues/7745
7,745
Audio mono argument no longer supported, despite class documentation
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[ "I want to solve this problem can you please assign it to me\nand also can you please guide whether the mono parameter is required to be re-added or the documentation needs an update?" ]
2025-08-22T12:15:41Z
2025-08-24T18:22:41Z
null
NONE
null
null
### Describe the bug Either update the documentation, or re-introduce the flag (and corresponding logic to convert the audio to mono) ### Steps to reproduce the bug Audio(sampling_rate=16000, mono=True) raises the error TypeError: Audio.__init__() got an unexpected keyword argument 'mono' However, in the class doc...
null
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https://github.com/huggingface/datasets/issues/7744
7,744
dtype: ClassLabel is not parsed correctly in `features.py`
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[ "I think it's \"class_label\"", "> I think it's \"class_label\"\n\nI see -- thank you. This works\n\n```yaml\nlicense: mit\nlanguage:\n- en\ntags:\n- genomics\n- yeast\n- transcription\n- perturbation\n- response\n- overexpression\npretty_name: Hackett, 2020 Overexpression\nsize_categories:\n- 1M<n<10M\ndataset_i...
2025-08-21T23:28:50Z
2025-09-10T15:23:41Z
2025-09-10T15:23:41Z
NONE
null
null
`dtype: ClassLabel` in the README.md yaml metadata is parsed incorrectly and causes the data viewer to fail. This yaml in my metadata ([source](https://huggingface.co/datasets/BrentLab/yeast_genome_resources/blob/main/README.md), though i changed `ClassLabel` to `string` to using different dtype in order to avoid the ...
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https://github.com/huggingface/datasets/pull/7743
7,743
Refactor HDF5 and preserve tree structure
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[ "@lhoestq this is ready for you now!", "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7743). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-08-21T17:28:17Z
2025-08-26T15:28:05Z
2025-08-26T15:28:05Z
CONTRIBUTOR
false
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Closes #7741. Followup to #7690 - Recursive parsing and feature inference, to preserve the tree structure of the file. Note this means we now visit all links in the file. It also means we have to call` combine_chunks` on any large non-root datasets. - Support for `complex64` (two `float32`s, used to be converted to...
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true
https://github.com/huggingface/datasets/issues/7742
7,742
module 'pyarrow' has no attribute 'PyExtensionType'
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open
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[ "Just checked out the files and thishad already been addressed", "For others who find this issue: \n\n`pip install --upgrade \"datasets>=2.20.0\"` \n\nfrom https://github.com/explodinggradients/ragas/issues/2170#issuecomment-3204393672 can fix it." ]
2025-08-20T06:14:33Z
2025-09-09T02:51:46Z
null
NONE
null
null
### Describe the bug When importing certain libraries, users will encounter the following error which can be traced back to the datasets library. module 'pyarrow' has no attribute 'PyExtensionType'. Example issue: https://github.com/explodinggradients/ragas/issues/2170 The issue occurs due to the following. I will ...
null
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https://github.com/huggingface/datasets/issues/7741
7,741
Preserve tree structure when loading HDF5
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closed
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[]
2025-08-19T15:42:05Z
2025-08-26T15:28:06Z
2025-08-26T15:28:06Z
CONTRIBUTOR
null
null
### Feature request https://github.com/huggingface/datasets/pull/7740#discussion_r2285605374 ### Motivation `datasets` has the `Features` class for representing nested features. HDF5 files have groups of datasets which are nested, though in #7690 the keys are flattened. We should preserve that structure for the user...
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https://github.com/huggingface/datasets/pull/7740
7,740
Document HDF5 support
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[ "@lhoestq any guidance on what else to add/feedback on what is there now? It seems a bit minimal, but I don't think it's worth doing an entire page on HDF5?" ]
2025-08-19T14:53:04Z
2025-09-24T14:51:11Z
2025-09-24T14:51:11Z
CONTRIBUTOR
false
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I think these are at least the main places where we should put content. Ideally it is not just repeated in the final version ref #7690 - [x] Wait for #7743 to land
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true
https://github.com/huggingface/datasets/issues/7739
7,739
Replacement of "Sequence" feature with "List" breaks backward compatibility
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[ "Backward compatibility here means 4.0.0 can load datasets saved with older versions.\n\nYou will need 4.0.0 to load datasets saved with 4.0.0" ]
2025-08-18T17:28:38Z
2025-09-10T14:17:50Z
null
NONE
null
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PR #7634 replaced the Sequence feature with List in 4.0.0, so datasets saved with version 4.0.0 with that feature cannot be loaded by earlier versions. There is no clear option in 4.0.0 to use the legacy feature type to preserve backward compatibility. Why is this a problem? I have a complex preprocessing and training...
null
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https://github.com/huggingface/datasets/issues/7738
7,738
Allow saving multi-dimensional ndarray with dynamic shapes
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open
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[ "I agree this would be super valuable.\n\nIt looks like this was discussed a few years ago in https://github.com/huggingface/datasets/issues/5272#issuecomment-1550200824 but there were some issues. Those PRs are merged now and it looks like Arrow [officially supports](https://arrow.apache.org/docs/format/CanonicalE...
2025-08-18T02:23:51Z
2025-08-26T15:25:02Z
null
NONE
null
null
### Feature request I propose adding a dedicated feature to the datasets library that allows for the efficient storage and retrieval of multi-dimensional ndarray with dynamic shapes. Similar to how Image columns handle variable-sized images, this feature would provide a structured way to store array data where the dim...
null
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https://github.com/huggingface/datasets/pull/7737
7,737
docs: Add column overwrite example to batch mapping guide
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closed
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[ "Hi @lhoestq, just a gentle follow-up on this PR." ]
2025-08-13T14:20:19Z
2025-09-04T11:11:37Z
2025-09-04T11:11:37Z
CONTRIBUTOR
false
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This PR adds a complementary example showing the **column-overwriting** pattern, which is both more direct and more flexible for many transformations. ### Proposed Change The original `remove_columns` example remains untouched. Below it, this PR introduces an alternative approach that overwrites an existing colum...
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https://github.com/huggingface/datasets/pull/7736
7,736
Fix type hint `train_test_split`
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7736). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-08-11T20:46:53Z
2025-08-13T13:13:50Z
2025-08-13T13:13:48Z
MEMBER
false
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null
null
null
true
https://github.com/huggingface/datasets/pull/7735
7,735
fix largelist repr
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closed
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7735). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-08-11T15:17:42Z
2025-08-11T15:39:56Z
2025-08-11T15:39:54Z
MEMBER
false
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null
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null
null
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true
https://github.com/huggingface/datasets/pull/7734
7,734
Fixing __getitem__ of datasets which behaves inconsistent to documentation when setting _format_type to None
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closed
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[ "this breaking change is actually expected, happy to help with a fix in sentencetransformers to account for this", "Thank you for the context. I thought this was a mismatch do the documentation. Good to know it was intentional. No worries, can add a PR to sentence transformers." ]
2025-08-09T15:52:54Z
2025-08-17T07:23:00Z
2025-08-17T07:23:00Z
NONE
false
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Setting _format_type to None, should return plain python object but as of 4.0.0 returns Column. This fails in libs such as sentencetransformers (such as in generation of hard negatives) where plain python is expected.
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null
null
null
true
https://github.com/huggingface/datasets/issues/7733
7,733
Dataset Repo Paths to Locally Stored Images Not Being Appended to Image Path
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[ "This is the download issues I come into, about ever other time it fails...\n<img width=\"1719\" height=\"1226\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/2e5b4b3e-7c13-4bad-a77c-34b47a932831\" />", "I’m guessing this is just a feature so I’m going to close this thread. I also altered my load...
2025-08-08T19:10:58Z
2025-10-07T04:47:36Z
2025-10-07T04:32:48Z
NONE
null
null
### Describe the bug I’m not sure if this is a bug or a feature and I just don’t fully understand how dataset loading is to work, but it appears there may be a bug with how locally stored Image() are being accessed. I’ve uploaded a new dataset to hugging face (rmdig/rocky_mountain_snowpack) but I’ve come into a ton of...
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https://github.com/huggingface/datasets/issues/7732
7,732
webdataset: key errors when `field_name` has upper case characters
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2025-08-08T16:56:42Z
2025-08-08T16:56:42Z
null
CONTRIBUTOR
null
null
### Describe the bug When using a webdataset each sample can be a collection of different "fields" like this: ``` images17/image194.left.jpg images17/image194.right.jpg images17/image194.json images17/image12.left.jpg images17/image12.right.jpg images17/image12.json ``` if the field_name contains upper case characte...
null
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https://github.com/huggingface/datasets/issues/7731
7,731
Add the possibility of a backend for audio decoding
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open
false
[ "is there a work around im stuck", "never mind just downgraded" ]
2025-08-08T11:08:56Z
2025-08-20T16:29:33Z
null
NONE
null
null
### Feature request Add the possibility of a backend for audio decoding. Before version 4.0.0, soundfile was used, and now torchcodec is used, but the problem is that torchcodec requires ffmpeg, which is problematic to install on the same colab. Therefore, I suggest adding a decoder selection when loading the dataset....
null
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https://github.com/huggingface/datasets/pull/7730
7,730
Grammar fix: correct "showed" to "shown" in fingerprint.py
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closed
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2025-08-07T21:22:56Z
2025-08-13T18:34:30Z
2025-08-13T13:12:56Z
CONTRIBUTOR
false
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This PR corrects a small grammatical issue in the outputs of fingerprint.py: ```diff - "This warning is only showed once. Subsequent hashing failures won't be showed." + "This warning is only shown once. Subsequent hashing failures won't be shown." ```
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null
null
null
true
https://github.com/huggingface/datasets/issues/7729
7,729
OSError: libcudart.so.11.0: cannot open shared object file: No such file or directory
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open
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[ "Is this related to the \"datasets\" library? @SaleemMalikAI " ]
2025-08-07T14:07:23Z
2025-09-24T02:17:15Z
null
NONE
null
null
> Hi is there any solution for that eror i try to install this one pip install torch==1.12.1+cpu torchaudio==0.12.1+cpu -f https://download.pytorch.org/whl/torch_stable.html this is working fine but tell me how to install pytorch version that is fit for gpu
null
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https://github.com/huggingface/datasets/issues/7728
7,728
NonMatchingSplitsSizesError and ExpectedMoreSplitsError
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[ "To load just one shard without errors, you should use data_files directly with split set to \"train\", but don’t specify \"allenai/c4\", since that points to the full dataset with all shards.\n\nInstead, do this:\n```\nfrom datasets import load_dataset\nfrom datasets import load_dataset\n\n# Load only one shard of...
2025-08-07T04:04:50Z
2025-10-06T21:08:39Z
null
NONE
null
null
### Describe the bug When loading dataset, the info specified by `data_files` did not overwrite the original info. ### Steps to reproduce the bug ```python from datasets import load_dataset traindata = load_dataset( "allenai/c4", "en", data_files={"train": "en/c4-train.00000-of-...
null
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null
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https://github.com/huggingface/datasets/issues/7727
7,727
config paths that start with ./ are not valid as hf:// accessed repos, but are valid when accessed locally
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2025-08-06T08:21:37Z
2025-08-06T08:21:37Z
null
NONE
null
null
### Describe the bug ``` - config_name: some_config data_files: - split: train path: - images/xyz/*.jpg ``` will correctly download but ``` - config_name: some_config data_files: - split: train path: - ./images/xyz/*.jpg ``` will error with `FileNotFoundError` due to improper url joining. `loa...
null
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https://github.com/huggingface/datasets/pull/7726
7,726
fix(webdataset): don't .lower() field_name
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closed
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[ "fixes: https://github.com/huggingface/datasets/issues/7732", "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7726). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.", "CI failures are unrelat...
2025-08-05T16:57:09Z
2025-08-20T16:35:55Z
2025-08-20T16:35:55Z
CONTRIBUTOR
false
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This fixes cases where keys have upper case identifiers
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null
null
null
true
https://github.com/huggingface/datasets/issues/7724
7,724
Can not stepinto load_dataset.py?
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2025-08-05T09:28:51Z
2025-08-05T09:28:51Z
null
NONE
null
null
I set a breakpoint in "load_dataset.py" and try to debug my data load codes, but it does not stop at any breakpoints, so "load_dataset.py" can not be stepped into ? <!-- Failed to upload "截图 2025-08-05 17-25-18.png" -->
null
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https://github.com/huggingface/datasets/issues/7723
7,723
Don't remove `trust_remote_code` arg!!!
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open
false
[]
2025-08-04T15:42:07Z
2025-08-04T15:42:07Z
null
NONE
null
null
### Feature request defaulting it to False is nice balance. we need manully setting it to True in certain scenarios! Add `trust_remote_code` arg back please! ### Motivation defaulting it to False is nice balance. we need manully setting it to True in certain scenarios! ### Your contribution defaulting it to Fals...
null
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https://github.com/huggingface/datasets/issues/7722
7,722
Out of memory even though using load_dataset(..., streaming=True)
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2025-08-04T14:41:55Z
2025-08-04T14:41:55Z
null
NONE
null
null
### Describe the bug I am iterating over a large dataset that I load using streaming=True to avoid running out of memory. Unfortunately, I am observing that memory usage increases over time and I'm finally running in an oom. ### Steps to reproduce the bug ``` ds = load_dataset("openslr/librispeech_asr", split="tra...
null
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null
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false
https://github.com/huggingface/datasets/issues/7721
7,721
Bad split error message when using percentages
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[ "I'd like to work on this: add clearer validation/messages for percent-based splits + tests", "The most basic example is this code:\n`load_dataset(\"openslr/librispeech_asr\", split=\"train[10%:20%]\")`\n\nThis results in this ValueError:\n```\n raise ValueError(f'Unknown split \"{split}\". Should be one of {l...
2025-08-04T13:20:25Z
2025-08-14T14:42:24Z
null
NONE
null
null
### Describe the bug Hi, I'm trying to download a dataset. To not load the entire dataset in memory, I split it as described [here](https://huggingface.co/docs/datasets/v4.0.0/loading#slice-splits) in 10% steps. When doing so, the library returns this error: raise ValueError(f"Bad split: {split}. Available splits...
null
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https://github.com/huggingface/datasets/issues/7720
7,720
Datasets 4.0 map function causing column not found
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[ "Hi, I tried to reproduce this issue on the latest `main` branch but it seems to be working correctly now. My test script (which creates a dummy dataset and applies the `.map()` function) successfully creates and accesses the new column without a `KeyError`.\n\nIt's possible this was fixed by a recent commit. The m...
2025-08-03T12:52:34Z
2025-08-07T19:23:34Z
null
NONE
null
null
### Describe the bug Column returned after mapping is not found in new instance of the dataset. ### Steps to reproduce the bug Code for reproduction. After running get_total_audio_length, it is errored out due to `data` not having `duration` ``` def compute_duration(x): return {"duration": len(x["audio"]["array"...
null
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https://github.com/huggingface/datasets/issues/7719
7,719
Specify dataset columns types in typehint
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open
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2025-08-02T13:22:31Z
2025-08-02T13:22:31Z
null
NONE
null
null
### Feature request Make dataset optionaly generic to datasets usage with type annotations like it was done in `torch.Dataloader` https://github.com/pytorch/pytorch/blob/134179474539648ba7dee1317959529fbd0e7f89/torch/utils/data/dataloader.py#L131 ### Motivation In MTEB we're using a lot of datasets objects, but they...
null
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https://github.com/huggingface/datasets/pull/7718
7,718
add support for pyarrow string view in features
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[ "@lhoestq who do you think would be the best to have a look at this? Any pointers would be appreciated, thanks!", "Hi ! what's the rationale for supporting string view ? I'm afraid it can complexify the typing logic without much value", "Hi @lhoestq ! I mainly want to be able to create features by using `Featur...
2025-08-01T14:58:39Z
2025-09-12T13:14:16Z
2025-09-12T13:13:24Z
CONTRIBUTOR
false
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null
null
null
true
https://github.com/huggingface/datasets/issues/7717
7,717
Cached dataset is not used when explicitly passing the cache_dir parameter
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[ "Hi, I've investigated this issue and can confirm the bug. Here are my findings:\n\n**1. Reproduction:**\nI was able to reproduce the issue on the latest `main` branch. Using the provided code snippet, `snapshot_download` correctly populates the custom `cache_dir`, but `load_dataset` with the same `cache_dir` trigg...
2025-08-01T07:12:41Z
2025-08-05T19:19:36Z
null
NONE
null
null
### Describe the bug Hi, we are pre-downloading a dataset using snapshot_download(). When loading this exact dataset with load_dataset() the cached snapshot is not used. In both calls, I provide the cache_dir parameter. ### Steps to reproduce the bug ``` from datasets import load_dataset, concatenate_datasets from h...
null
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https://github.com/huggingface/datasets/pull/7716
7,716
typo
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7716). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-31T17:14:45Z
2025-07-31T17:17:15Z
2025-07-31T17:14:51Z
MEMBER
false
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true
https://github.com/huggingface/datasets/pull/7715
7,715
Docs: Use Image(mode="F") for PNG/JPEG depth maps
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7715). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-31T17:09:49Z
2025-07-31T17:12:23Z
2025-07-31T17:10:10Z
MEMBER
false
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null
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true
https://github.com/huggingface/datasets/pull/7714
7,714
fix num_proc=1 ci test
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7714). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-31T16:36:32Z
2025-07-31T16:39:03Z
2025-07-31T16:38:03Z
MEMBER
false
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null
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true
https://github.com/huggingface/datasets/pull/7713
7,713
Update cli.mdx to refer to the new "hf" CLI
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7713). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-31T15:06:11Z
2025-07-31T16:37:56Z
2025-07-31T16:37:55Z
CONTRIBUTOR
false
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Update to refer to `hf auth login`
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null
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true
https://github.com/huggingface/datasets/pull/7712
7,712
Retry intermediate commits too
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7712). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-31T14:33:33Z
2025-07-31T14:37:43Z
2025-07-31T14:36:43Z
MEMBER
false
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https://github.com/huggingface/datasets/pull/7711
7,711
Update dataset_dict push_to_hub
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7711). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-31T13:25:03Z
2025-07-31T14:18:55Z
2025-07-31T14:18:53Z
MEMBER
false
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following https://github.com/huggingface/datasets/pull/7708
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true
https://github.com/huggingface/datasets/pull/7710
7,710
Concurrent IterableDataset push_to_hub
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2025-07-31T10:11:31Z
2025-07-31T10:14:00Z
2025-07-31T10:12:52Z
MEMBER
false
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Same as https://github.com/huggingface/datasets/pull/7708 but for `IterableDataset`
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null
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true
https://github.com/huggingface/datasets/issues/7709
7,709
Release 4.0.0 breaks usage patterns of with_format
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[ "This is a breaking change with 4.0 which introduced `Column` objects. To get the numpy array from a `Column` you can `col[i]`, `col[i:j]` or even `col[:]` if you want the full column as a numpy array:\n\n```python\nfrom datasets import load_dataset\ndataset = load_dataset(...)\ndataset = dataset.with_format(\"nump...
2025-07-30T11:34:53Z
2025-08-07T08:27:18Z
2025-08-07T08:27:18Z
NONE
null
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### Describe the bug Previously it was possible to access a whole column that was e.g. in numpy format via `with_format` by indexing the column. Now this possibility seems to be gone with the new Column() class. As far as I see, this makes working on a whole column (in-memory) more complex, i.e. normalizing an in-memo...
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https://github.com/huggingface/datasets/pull/7708
7,708
Concurrent push_to_hub
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7708). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-29T13:14:30Z
2025-07-31T10:00:50Z
2025-07-31T10:00:49Z
MEMBER
false
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Retry the step that (download + update + upload) the README.md using `create_commit(..., parent_commit=...)` if there was a commit in the meantime. This should enable concurrent `push_to_hub()` since it won't overwrite the README.md metadata anymore. Note: we fixed an issue server side to make this work: <details...
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https://github.com/huggingface/datasets/issues/7707
7,707
load_dataset() in 4.0.0 failed when decoding audio
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[ "Hi @lhoestq . Would you please have a look at it? I use the official NV Docker ([NV official docker image](https://catalog.ngc.nvidia.com/orgs/nvidia/containers/pytorch): `nvcr.io/nvidia/pytorch:25.06-py3`) on A100 and encountered this issue, but I don't know how to fix it.", "Use !pip install -U datasets[audio]...
2025-07-29T03:25:03Z
2025-10-05T06:41:38Z
2025-08-01T05:15:45Z
NONE
null
null
### Describe the bug Cannot decode audio data. ### Steps to reproduce the bug ```python from datasets import load_dataset dataset = load_dataset("hf-internal-testing/librispeech_asr_demo", "clean", split="validation") print(dataset[0]["audio"]["array"]) ``` 1st round run, got ``` File "/usr/local/lib/python3.1...
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https://github.com/huggingface/datasets/pull/7706
7,706
Reimplemented partial split download support (revival of #6832)
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[ " Mario’s Patch (in PR #6832):\r\n```\r\ndef _make_split_generators_kwargs(self, prepare_split_kwargs):\r\n # Pass `pipeline` into `_split_generators()` from `prepare_split_kwargs` if\r\n # it's in the call signature of `_split_generators()`.\r\n # This allows for global preprocessing in beam.\r\n split...
2025-07-28T19:40:40Z
2025-10-29T10:20:22Z
null
CONTRIBUTOR
false
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(revival of #6832) https://github.com/huggingface/datasets/pull/7648#issuecomment-3084050130 Close https://github.com/huggingface/datasets/issues/4101, and more --- ### PR under work!!!!
null
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null
null
null
true
https://github.com/huggingface/datasets/issues/7705
7,705
Can Not read installed dataset in dataset.load(.)
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[ "You can download the dataset locally using [huggingface_hub.snapshot_download](https://huggingface.co/docs/huggingface_hub/v0.34.3/en/package_reference/file_download#huggingface_hub.snapshot_download) and then do\n\n```python\ndataset = load_dataset(local_directory_path)\n```", "> You can download the dataset lo...
2025-07-28T09:43:54Z
2025-08-05T01:24:32Z
null
NONE
null
null
Hi, folks, I'm newbie in huggingface dataset api. As title, i'm facing the issue that the dataset.load api can not connect to the installed dataset. code snippet : <img width="572" height="253" alt="Image" src="https://github.com/user-attachments/assets/10f48aaf-d6ca-4239-b1cf-145d74f125d1" /> data path : "/xxx/jose...
null
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https://github.com/huggingface/datasets/pull/7704
7,704
Fix map() example in datasets documentation: define tokenizer before use
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[ "Hi @lhoestq, just a gentle follow-up on this doc fix PR (#7704). Let me know if any changes are needed — happy to update.\r\nHope this improvement helps users run the example without confusion!", "the modified file is the readme of the docs, not about map() specifically" ]
2025-07-26T14:18:17Z
2025-08-13T13:23:18Z
2025-08-13T13:06:37Z
CONTRIBUTOR
false
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## Problem The current datasets.Dataset.map() example in the documentation demonstrates batched processing using a tokenizer object without defining or importing it. This causes a NameError when users copy and run the example as-is, breaking the expected seamless experience. ## Correction This PR fixes the issue b...
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null
null
null
true
https://github.com/huggingface/datasets/issues/7703
7,703
[Docs] map() example uses undefined `tokenizer` — causes NameError
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[ "I've submitted PR #7704 which adds documentation to clarify the behavior of `map()` when returning `None`." ]
2025-07-26T13:35:11Z
2025-07-27T09:44:35Z
null
CONTRIBUTOR
null
null
## Description The current documentation example for `datasets.Dataset.map()` demonstrates batched processing but uses a `tokenizer` object without defining or importing it. This causes an error every time it's copied. Here is the problematic line: ```python # process a batch of examples >>> ds = ds.map(lambda examp...
null
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https://github.com/huggingface/datasets/pull/7702
7,702
num_proc=0 behave like None, num_proc=1 uses one worker (not main process) and clarify num_proc documentation
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[ "I think we can support num_proc=0 and make it equivalent to `None` to make it simpler", "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7702). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",...
2025-07-26T08:19:39Z
2025-07-31T14:52:33Z
2025-07-31T14:52:33Z
CONTRIBUTOR
false
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Fixes issue #7700 This PR makes num_proc=0 behave like None in Dataset.map(), disabling multiprocessing. It improves UX by aligning with DataLoader(num_workers=0) behavior. The num_proc docstring is also updated to clearly explain valid values and behavior. @SunMarc
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null
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true
https://github.com/huggingface/datasets/pull/7701
7,701
Update fsspec max version to current release 2025.7.0
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[ "@lhoestq I ran the test suite locally and while some tests were failing those failures are present on the main branch too. Could you please review and trigger the CI?", "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7701). All of your documentation changes will be reflecte...
2025-07-26T06:47:59Z
2025-08-13T17:32:07Z
2025-07-28T11:58:11Z
CONTRIBUTOR
false
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Diffusers currently asks for a max fsspec version of `2025.3.0`. This change updates it to the current latest version. This change is mainly required to resolve conflicts with other packages in an environment. In my particular case, `aider-chat` which is a part of my environment installs `2025.5.1` which is incompatibl...
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null
null
null
true
https://github.com/huggingface/datasets/issues/7700
7,700
[doc] map.num_proc needs clarification
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2025-07-25T17:35:09Z
2025-07-25T17:39:36Z
null
NONE
null
null
https://huggingface.co/docs/datasets/v4.0.0/en/package_reference/main_classes#datasets.Dataset.map.num_proc ``` num_proc (int, optional, defaults to None) — Max number of processes when generating cache. Already cached shards are loaded sequentially. ``` for batch: ``` num_proc (int, optional, defaults to None): The n...
null
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https://github.com/huggingface/datasets/issues/7699
7,699
Broken link in documentation for "Create a video dataset"
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[ "The URL is ok but it seems the webdataset website is down. There seems to be a related issue here: https://github.com/webdataset/webdataset/issues/155\n\nFeel free to ask the authors there for an update. Otherwise happy to witch the link to the mirror shared in that issue" ]
2025-07-24T19:46:28Z
2025-07-25T15:27:47Z
null
NONE
null
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The link to "the [WebDataset documentation](https://webdataset.github.io/webdataset)." is broken. https://huggingface.co/docs/datasets/main/en/video_dataset#webdataset <img width="2048" height="264" alt="Image" src="https://github.com/user-attachments/assets/975dd10c-aad8-42fc-9fbc-de0e2747a326" />
null
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https://github.com/huggingface/datasets/issues/7698
7,698
NotImplementedError when using streaming=True in Google Colab environment
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[ "Hi, @Aniket17200, try upgrading datasets using '!pip install -U datasets'. I hope this will resolve your issue.", "Thank you @tanuj-rai, it's working great " ]
2025-07-23T08:04:53Z
2025-07-23T15:06:23Z
null
NONE
null
null
### Describe the bug When attempting to load a large dataset (like tiiuae/falcon-refinedweb or allenai/c4) using streaming=True in a standard Google Colab notebook, the process fails with a NotImplementedError: Loading a streaming dataset cached in a LocalFileSystem is not supported yet. This issue persists even after...
null
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https://github.com/huggingface/datasets/issues/7697
7,697
-
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2025-07-23T01:30:32Z
2025-07-25T15:21:39Z
2025-07-25T15:21:39Z
NONE
null
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-
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https://github.com/huggingface/datasets/issues/7696
7,696
load_dataset() in 4.0.0 returns different audio samples compared to earlier versions breaking reproducibility
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[ "Hi ! This is because `datasets` now uses the FFmpeg-based library `torchcodec` instead of the libsndfile-based library `soundfile` to decode audio data. Those two have different decoding implementations", "I’m all for torchcodec, good luck with the migration!" ]
2025-07-22T17:02:17Z
2025-07-30T14:22:21Z
2025-07-30T14:22:21Z
NONE
null
null
### Describe the bug In datasets 4.0.0 release, `load_dataset()` returns different audio samples compared to earlier versions, this breaks integration tests that depend on consistent sample data across different environments (first and second envs specified below). ### Steps to reproduce the bug ```python from dat...
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https://github.com/huggingface/datasets/pull/7695
7,695
Support downloading specific splits in load_dataset
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[ "I’ve completed the following steps to continue the partial split download support (from PR #6832):\r\n\r\nI did changes on top of what has been done by mario. Here are some of those changes: \r\n- Restored support for writing multiple split shards:\r\n\r\n- In _prepare_split_single, we now correctly replace JJJJJ ...
2025-07-22T09:33:54Z
2025-07-28T17:33:30Z
2025-07-28T17:15:45Z
CONTRIBUTOR
false
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This PR builds on #6832 by @mariosasko. May close - #4101, #2538 Discussion - https://github.com/huggingface/datasets/pull/7648#issuecomment-3084050130 --- ### Note - This PR is under work and frequent changes will be pushed.
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null
null
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true
https://github.com/huggingface/datasets/issues/7694
7,694
Dataset.to_json consumes excessive memory, appears to not be a streaming operation
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[ "Hi ! to_json is memory efficient and writes the data by batch:\n\nhttps://github.com/huggingface/datasets/blob/d9861d86be222884dabbd534a2db770c70c9b558/src/datasets/io/json.py#L153-L159\n\nWhat memory are you mesuring ? If you are mesuring RSS, it is likely that it counts the memory mapped data of the dataset. Mem...
2025-07-21T07:51:25Z
2025-07-25T14:42:21Z
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NONE
null
null
### Describe the bug When exporting a Dataset object to a JSON Lines file using the .to_json(lines=True) method, the process consumes a very large amount of memory. The memory usage is proportional to the size of the entire Dataset object being saved, rather than being a low, constant memory operation. This behavior ...
null
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null
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https://github.com/huggingface/datasets/issues/7693
7,693
Dataset scripts are no longer supported, but found superb.py
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[ "I got a pretty similar issue when I try to load bigbio/neurotrial_ner dataset. \n`Dataset scripts are no longer supported, but found neurotrial_ner.py`", "Same here. I was running this tutorial and got a similar error: https://github.com/openai/whisper/discussions/654 (I'm a first-time transformers library user)...
2025-07-20T13:48:06Z
2025-09-04T10:32:12Z
null
NONE
null
null
### Describe the bug Hello, I'm trying to follow the [Hugging Face Pipelines tutorial](https://huggingface.co/docs/transformers/main_classes/pipelines) but the tutorial seems to work only on old datasets versions. I then get the error : ``` -------------------------------------------------------------------------- ...
null
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https://github.com/huggingface/datasets/issues/7692
7,692
xopen: invalid start byte for streaming dataset with trust_remote_code=True
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[]
open
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[ "Hi ! it would be cool to convert this dataset to Parquet. This will make it work for `datasets>=4.0`, enable the Dataset Viewer and make it more reliable to load/stream (currently it uses a loading script in python and those are known for having issues sometimes)\n\nusing `datasets==3.6.0`, here is the command to ...
2025-07-20T11:08:20Z
2025-07-25T14:38:54Z
null
NONE
null
null
### Describe the bug I am trying to load YODAS2 dataset with datasets==3.6.0 ``` from datasets import load_dataset next(iter(load_dataset('espnet/yodas2', name='ru000', split='train', streaming=True, trust_remote_code=True))) ``` And get `UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa8 in position 1: invalid ...
null
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null
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false
https://github.com/huggingface/datasets/issues/7691
7,691
Large WebDataset: pyarrow.lib.ArrowCapacityError on load() even with streaming
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[ "It seems the error occurs right here, as it tries to infer the Features: https://github.com/huggingface/datasets/blob/main/src/datasets/packaged_modules/webdataset/webdataset.py#L78-L90", "It seems to me that if we have something that is so large that it cannot fit in pa.table, the fallback method should be to j...
2025-07-19T18:40:27Z
2025-07-25T08:51:10Z
null
NONE
null
null
### Describe the bug I am creating a large WebDataset-format dataset for sign language processing research, and a number of the videos are over 2GB. The instant I hit one of the shards with one of those videos, I get a ArrowCapacityError, even with streaming. I made a config for the dataset that specifically inclu...
null
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null
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https://github.com/huggingface/datasets/pull/7690
7,690
HDF5 support
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[ "A few to-dos which I think can be left for future PRs (which I am happy to do/help with -- just this one is already huge 😄 ):\r\n- [Enum types](https://docs.h5py.org/en/stable/special.html#enumerated-types)\r\n- HDF5 [io](https://github.com/huggingface/datasets/tree/main/src/datasets/io)\r\n- [dataset-viewer](htt...
2025-07-18T21:09:41Z
2025-08-19T15:18:58Z
2025-08-19T13:28:53Z
CONTRIBUTOR
false
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This PR adds support for tabular HDF5 file(s) by converting each row to an Arrow table. It supports columns with the usual dtypes including up to 5-dimensional arrays as well as support for complex/compound types by using `Features(dict)`. All datasets within the HDF5 file should have rows on the first dimension (group...
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null
null
null
true
https://github.com/huggingface/datasets/issues/7689
7,689
BadRequestError for loading dataset?
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[ "Same here, for `HuggingFaceFW/fineweb`. Code that worked with no issues for the last 2 months suddenly fails today. Tried updating `datasets`, `huggingface_hub`, `fsspec` to newest versions, but the same error occurs.", "I'm also hitting this issue, with `mandarjoshi/trivia_qa`; My dataset loading was working su...
2025-07-18T09:30:04Z
2025-07-18T11:59:51Z
2025-07-18T11:52:29Z
NONE
null
null
### Describe the bug Up until a couple days ago I was having no issues loading `Helsinki-NLP/europarl` and `Helsinki-NLP/un_pc`, but now suddenly I get the following error: ``` huggingface_hub.errors.BadRequestError: (Request ID: ...) Bad request: * Invalid input: expected array, received string * at paths * Invalid...
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https://github.com/huggingface/datasets/issues/7688
7,688
No module named "distributed"
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[ "The error ModuleNotFoundError: No module named 'datasets.distributed' means your installed datasets library is too old or incompatible with the version of Library you are using(in my case it was BEIR). The datasets.distributed module was removed in recent versions of the datasets library.\n\nDowngrade datasets to ...
2025-07-17T09:32:35Z
2025-07-25T15:14:19Z
null
NONE
null
null
### Describe the bug hello, when I run the command "from datasets.distributed import split_dataset_by_node", I always met the bug "No module named 'datasets.distributed" in different version like 4.0.0, 2.21.0 and so on. How can I solve this? ### Steps to reproduce the bug 1. pip install datasets 2. from datasets.di...
null
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https://github.com/huggingface/datasets/issues/7687
7,687
Datasets keeps rebuilding the dataset every time i call the python script
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[ "here is the code to load the dataset form the cache:\n\n```python\ns = load_dataset('databricks/databricks-dolly-15k')['train']\n```\n\nif you pass the location of a local directory it will create a new cache based on that directory content" ]
2025-07-17T09:03:38Z
2025-07-25T15:21:31Z
null
NONE
null
null
### Describe the bug Every time it runs, somehow, samples increase. This can cause a 12mb dataset to have other built versions of 400 mbs+ <img width="363" height="481" alt="Image" src="https://github.com/user-attachments/assets/766ce958-bd2b-41bc-b950-86710259bfdc" /> ### Steps to reproduce the bug `from datasets...
null
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null
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false
https://github.com/huggingface/datasets/issues/7686
7,686
load_dataset does not check .no_exist files in the hub cache
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2025-07-16T20:04:00Z
2025-07-16T20:04:00Z
null
NONE
null
null
### Describe the bug I'm not entirely sure if this should be submitted as a bug in the `datasets` library or the `huggingface_hub` library, given it could be fixed at different levels of the stack. The fundamental issue is that the `load_datasets` api doesn't use the `.no_exist` files in the hub cache unlike other wr...
null
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null
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false
https://github.com/huggingface/datasets/issues/7685
7,685
Inconsistent range request behavior for parquet REST api
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[ "This is a weird bug, is it a range that is supposed to be satisfiable ? I mean, is it on the boundraries ?\n\nLet me know if you'r e still having the issue, in case it was just a transient bug", "@lhoestq yes the ranges are supposed to be satisfiable, and _sometimes_ they are. \n\nThe head requests show that it ...
2025-07-16T18:39:44Z
2025-08-11T08:16:54Z
null
NONE
null
null
### Describe the bug First off, I do apologize if this is not the correct repo for submitting this issue. Please direct me to another one if it's more appropriate elsewhere. The datasets rest api is inconsistently giving `416 Range Not Satisfiable` when using a range request to get portions of the parquet files. Mor...
null
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https://github.com/huggingface/datasets/pull/7684
7,684
fix audio cast storage from array + sampling_rate
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7684). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-15T10:13:42Z
2025-07-15T10:24:08Z
2025-07-15T10:24:07Z
MEMBER
false
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fix https://github.com/huggingface/datasets/issues/7682
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null
null
null
true
https://github.com/huggingface/datasets/pull/7683
7,683
Convert to string when needed + faster .zstd
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7683). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-15T09:37:44Z
2025-07-15T10:13:58Z
2025-07-15T10:13:56Z
MEMBER
false
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for https://huggingface.co/datasets/allenai/olmo-mix-1124
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null
null
null
true
https://github.com/huggingface/datasets/issues/7682
7,682
Fail to cast Audio feature for numpy arrays in datasets 4.0.0
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[ "thanks for reporting, I opened a PR and I'll make a patch release soon ", "> thanks for reporting, I opened a PR and I'll make a patch release soon\n\nThank you very much @lhoestq!" ]
2025-07-14T18:41:02Z
2025-07-15T12:10:39Z
2025-07-15T10:24:08Z
NONE
null
null
### Describe the bug Casting features with Audio for numpy arrays - done here with `ds.map(gen_sine, features=features)` fails in version 4.0.0 but not in version 3.6.0 ### Steps to reproduce the bug The following `uv script` should be able to reproduce the bug in version 4.0.0 and pass in version 3.6.0 on a macOS ...
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https://github.com/huggingface/datasets/issues/7681
7,681
Probabilistic High Memory Usage and Freeze on Python 3.10
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2025-07-14T01:57:16Z
2025-07-14T01:57:16Z
null
NONE
null
null
### Describe the bug A probabilistic issue encountered when processing datasets containing PIL.Image columns using the huggingface/datasets library on Python 3.10. The process occasionally experiences a sudden and significant memory spike, reaching 100% utilization, leading to a complete freeze. During this freeze, th...
null
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https://github.com/huggingface/datasets/issues/7680
7,680
Question about iterable dataset and streaming
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[ "> If we have already loaded the dataset, why doing to_iterable_dataset? Does it go through the dataset faster than map-style dataset?\n\nyes, it makes a faster DataLoader for example (otherwise DataLoader uses `__getitem__` which is slower than iterating)\n\n> load_dataset(streaming=True) is useful for huge datase...
2025-07-12T04:48:30Z
2025-08-01T13:01:48Z
null
NONE
null
null
In the doc, I found the following example: https://github.com/huggingface/datasets/blob/611f5a592359ebac6f858f515c776aa7d99838b2/docs/source/stream.mdx?plain=1#L65-L78 I am confused, 1. If we have already loaded the dataset, why doing `to_iterable_dataset`? Does it go through the dataset faster than map-style datase...
null
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null
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https://github.com/huggingface/datasets/issues/7679
7,679
metric glue breaks with 4.0.0
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[ "I released `evaluate` 0.4.5 yesterday to fix the issue - sorry for the inconvenience:\n\n```\npip install -U evaluate\n```", "Thanks so much, @lhoestq!" ]
2025-07-10T21:39:50Z
2025-07-11T17:42:01Z
2025-07-11T17:42:01Z
CONTRIBUTOR
null
null
### Describe the bug worked fine with 3.6.0, and with 4.0.0 `eval_metric = metric.compute()` in HF Accelerate breaks. The code that fails is: https://huggingface.co/spaces/evaluate-metric/glue/blob/v0.4.0/glue.py#L84 ``` def simple_accuracy(preds, labels): print(preds, labels) print(f"{preds==labels}") r...
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https://github.com/huggingface/datasets/issues/7678
7,678
To support decoding audio data, please install 'torchcodec'.
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[ "Hi ! yes you should `!pip install -U datasets[audio]` to have the required dependencies.\n\n`datasets` 4.0 now relies on `torchcodec` for audio decoding. The `torchcodec` AudioDecoder enables streaming from HF and also allows to decode ranges of audio", "Same issues on Colab.\n\n> !pip install -U datasets[audio]...
2025-07-10T09:43:13Z
2025-07-22T03:46:52Z
2025-07-11T05:05:42Z
NONE
null
null
In the latest version of datasets==4.0.0, i cannot print the audio data on the Colab notebook. But it works on the 3.6.0 version. !pip install -q -U datasets huggingface_hub fsspec from datasets import load_dataset downloaded_dataset = load_dataset("ymoslem/MediaSpeech", "tr", split="train") print(downloaded_datase...
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https://github.com/huggingface/datasets/issues/7677
7,677
Toxicity fails with datasets 4.0.0
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[ "Hi ! You can fix this by upgrading `evaluate`:\n\n```\npip install -U evaluate\n```", "Thanks, verified evaluate 0.4.5 works!" ]
2025-07-10T06:15:22Z
2025-07-11T04:40:59Z
2025-07-11T04:40:59Z
NONE
null
null
### Describe the bug With the latest 4.0.0 release, huggingface toxicity evaluation module fails with error: `ValueError: text input must be of type `str` (single example), `List[str]` (batch or single pretokenized example) or `List[List[str]]` (batch of pretokenized examples).` ### Steps to reproduce the bug Repro:...
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https://github.com/huggingface/datasets/issues/7676
7,676
Many things broken since the new 4.0.0 release
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[ "Happy to take a look, do you have a list of impacted datasets ?", "Thanks @lhoestq , related to lm-eval, at least `winogrande`, `mmlu` and `hellaswag`, based on my tests yesterday. But many others like <a href=\"https://huggingface.co/datasets/lukaemon/bbh\">bbh</a>, most probably others too. ", "Hi @mobicham ...
2025-07-09T18:59:50Z
2025-09-18T16:33:34Z
null
NONE
null
null
### Describe the bug The new changes in 4.0.0 are breaking many datasets, including those from lm-evaluation-harness. I am trying to revert back to older versions, like 3.6.0 to make the eval work but I keep getting: ``` Python File /venv/main/lib/python3.12/site-packages/datasets/features/features.py:1474, in genera...
null
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https://github.com/huggingface/datasets/issues/7675
7,675
common_voice_11_0.py failure in dataset library
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[ "Hi ! This dataset is not in a supported format and `datasets` 4 doesn't support datasets that based on python scripts which are often source of errors. Feel free to ask the dataset authors to convert the dataset to a supported format at https://huggingface.co/datasets/mozilla-foundation/common_voice_11_0/discussio...
2025-07-09T17:47:59Z
2025-07-22T09:35:42Z
null
NONE
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null
### Describe the bug I tried to download dataset but have got this error: from datasets import load_dataset load_dataset("mozilla-foundation/common_voice_11_0", "en", split="test", streaming=True) --------------------------------------------------------------------------- RuntimeError Tr...
null
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https://github.com/huggingface/datasets/pull/7674
7,674
set dev version
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7674). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-09T15:01:25Z
2025-07-09T15:04:01Z
2025-07-09T15:01:33Z
MEMBER
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https://github.com/huggingface/datasets/pull/7673
7,673
Release: 4.0.0
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7673). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-09T14:03:16Z
2025-07-09T14:36:19Z
2025-07-09T14:36:18Z
MEMBER
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https://github.com/huggingface/datasets/pull/7672
7,672
Fix double sequence
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7672). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-09T09:53:39Z
2025-07-09T09:56:29Z
2025-07-09T09:56:28Z
MEMBER
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```python >>> Features({"a": Sequence(Sequence({"c": Value("int64")}))}) {'a': List({'c': List(Value('int64'))})} ``` instead of `{'a': {'c': List(List(Value('int64')))}}`
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https://github.com/huggingface/datasets/issues/7671
7,671
Mapping function not working if the first example is returned as None
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[ "Hi, map() always expect an output.\n\nIf you wish to filter examples, you should use filter(), in your case it could be something like this:\n\n```python\nds = ds.map(my_processing_function).filter(ignore_long_prompts)\n```", "Realized this! Thanks a lot, I will close this issue then." ]
2025-07-08T17:07:47Z
2025-07-09T12:30:32Z
2025-07-09T12:30:32Z
NONE
null
null
### Describe the bug https://github.com/huggingface/datasets/blob/8a19de052e3d79f79cea26821454bbcf0e9dcd68/src/datasets/arrow_dataset.py#L3652C29-L3652C37 Here we can see the writer is initialized on `i==0`. However, there can be cases where in the user mapping function, the first example is filtered out (length cons...
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https://github.com/huggingface/datasets/pull/7670
7,670
Fix audio bytes
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7670). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-07T13:05:15Z
2025-07-07T13:07:47Z
2025-07-07T13:05:33Z
MEMBER
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true
https://github.com/huggingface/datasets/issues/7669
7,669
How can I add my custom data to huggingface datasets
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[ "Hey @xiagod \n\nThe easiest way to add your custom data to Hugging Face Datasets is to use the built-in load_dataset function with your local files. Some examples include:\n\nCSV files:\nfrom datasets import load_dataset\ndataset = load_dataset(\"csv\", data_files=\"my_file.csv\")\n\nJSON or JSONL files:\nfrom dat...
2025-07-04T19:19:54Z
2025-07-05T18:19:37Z
null
NONE
null
null
I want to add my custom dataset in huggingface dataset. Please guide me how to achieve that.
null
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https://github.com/huggingface/datasets/issues/7668
7,668
Broken EXIF crash the whole program
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[ "There are other discussions about error handling for images decoding here : https://github.com/huggingface/datasets/issues/7632 https://github.com/huggingface/datasets/issues/7612\n\nand a PR here: https://github.com/huggingface/datasets/pull/7638 (would love your input on the proposed solution !)" ]
2025-07-03T11:24:15Z
2025-07-03T12:27:16Z
null
NONE
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### Describe the bug When parsing this image in the ImageNet1K dataset, the `datasets` crashs whole training process just because unable to parse an invalid EXIF tag. ![Image](https://github.com/user-attachments/assets/3c840203-ac8c-41a0-9cf7-45f64488037d) ### Steps to reproduce the bug Use the `datasets.Image.decod...
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https://github.com/huggingface/datasets/pull/7667
7,667
Fix infer list of images
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7667). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-02T15:07:58Z
2025-07-02T15:10:28Z
2025-07-02T15:08:03Z
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cc @kashif
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https://github.com/huggingface/datasets/pull/7666
7,666
Backward compat list feature
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2025-07-02T14:58:00Z
2025-07-02T15:00:37Z
2025-07-02T14:59:40Z
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cc @kashif
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https://github.com/huggingface/datasets/issues/7665
7,665
Function load_dataset() misinterprets string field content as part of dataset schema when dealing with `.jsonl` files
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[ "Somehow I created the issue twice🙈 This one is an exact duplicate of #7664." ]
2025-07-01T17:14:53Z
2025-07-01T17:17:48Z
2025-07-01T17:17:48Z
NONE
null
null
### Describe the bug When loading a `.jsonl` file using `load_dataset("json", data_files="data.jsonl", split="train")`, the function misinterprets the content of a string field as if it were part of the dataset schema. In my case there is a field `body:` with a string value ``` "### Describe the bug (...) ,action:...
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duplicate
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https://github.com/huggingface/datasets/issues/7664
7,664
Function load_dataset() misinterprets string field content as part of dataset schema when dealing with `.jsonl` files
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[ "Hey @zdzichukowalski, I was not able to reproduce this on python 3.11.9 and datasets 3.6.0. The contents of \"body\" are correctly parsed as a string and no other fields like timestamps are created. Could you try reproducing this in a fresh environment, or posting the complete code where you encountered that stack...
2025-07-01T17:14:32Z
2025-07-09T13:14:11Z
null
NONE
null
null
### Describe the bug When loading a `.jsonl` file using `load_dataset("json", data_files="data.jsonl", split="train")`, the function misinterprets the content of a string field as if it were part of the dataset schema. In my case there is a field `body:` with a string value ``` "### Describe the bug (...) ,action:...
null
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https://github.com/huggingface/datasets/pull/7663
7,663
Custom metadata filenames
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[ "The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7663). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update." ]
2025-07-01T13:50:36Z
2025-07-01T13:58:41Z
2025-07-01T13:58:39Z
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example: https://huggingface.co/datasets/lhoestq/overlapping-subsets-imagefolder/tree/main To make multiple subsets for an imagefolder (one metadata file per subset), e.g. ```yaml configs: - config_name: default metadata_filenames: - metadata.csv - config_name: other metadata_filenames: ...
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https://github.com/huggingface/datasets/issues/7662
7,662
Applying map after transform with multiprocessing will cause OOM
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[ "Hi ! `add_column` loads the full column data in memory:\n\nhttps://github.com/huggingface/datasets/blob/bfa497b1666f4c58bd231c440d8b92f9859f3a58/src/datasets/arrow_dataset.py#L6021-L6021\n\na workaround to add the new column is to include the new data in the map() function instead, which only loads one batch at a ...
2025-07-01T05:45:57Z
2025-07-10T06:17:40Z
null
NONE
null
null
### Describe the bug I have a 30TB dataset. When I perform add_column and cast_column operations on it and then execute a multiprocessing map, it results in an OOM (Out of Memory) error. However, if I skip the add_column and cast_column steps and directly run the map, there is no OOM. After debugging step by step, I f...
null
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https://github.com/huggingface/datasets/pull/7661
7,661
fix del tqdm lock error
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[ "let's see which solution is found at https://github.com/huggingface/huggingface_hub/pull/3286 and do the same maybe ?" ]
2025-07-01T02:04:02Z
2025-08-13T13:16:44Z
null
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fixes https://github.com/huggingface/datasets/issues/7660
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https://github.com/huggingface/datasets/issues/7660
7,660
AttributeError: type object 'tqdm' has no attribute '_lock'
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[ "Deleting a class (**not instance**) attribute might be invalid in this case, which is `tqdm` doing in `ensure_lock`.\n\n```python\nfrom tqdm import tqdm as old_tqdm\n\nclass tqdm1(old_tqdm):\n def __delattr__(self, attr):\n try:\n super().__delattr__(attr)\n except AttributeError:\n ...
2025-06-30T15:57:16Z
2025-07-03T15:14:27Z
null
NONE
null
null
### Describe the bug `AttributeError: type object 'tqdm' has no attribute '_lock'` It occurs when I'm trying to load datasets in thread pool. Issue https://github.com/huggingface/datasets/issues/6066 and PR https://github.com/huggingface/datasets/pull/6067 https://github.com/huggingface/datasets/pull/6068 tried to f...
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https://github.com/huggingface/datasets/pull/7659
7,659
Update the beans dataset link in Preprocess
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2025-06-30T09:58:44Z
2025-07-07T08:38:19Z
2025-07-01T14:01:42Z
CONTRIBUTOR
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In the Preprocess tutorial, the to "the beans dataset" is incorrect. Fixed.
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https://github.com/huggingface/datasets/pull/7658
7,658
Fix: Prevent loss of info.features and column_names in IterableDatasetDict.map when features is None
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[ "Hi!\r\nI haven’t included a test for this change, as the fix is quite small and targeted.\r\nPlease let me know if you’d like a test for this case or if you’d prefer to handle it during review.\r\nThanks!", "we can't know in advance the `features` after map() (it transforms the data !), so you can reuse the `fea...
2025-06-30T09:31:12Z
2025-07-01T16:26:30Z
2025-07-01T16:26:12Z
CONTRIBUTOR
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This PR fixes a bug where calling `IterableDatasetDict.map()` or `IterableDataset.map()` with the default `features=None` argument would overwrite the existing `info.features` attribute with `None`. This, in turn, caused the resulting dataset to lose its schema, breaking downstream usage of attributes like `column_name...
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https://github.com/huggingface/datasets/pull/7657
7,657
feat: add subset_name as alias for name in load_dataset
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2025-06-29T10:39:00Z
2025-07-18T17:45:41Z
null
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fixes #7637 This PR introduces subset_name as a user-facing alias for the name (previously `config_name`) argument in load_dataset. It aligns terminology with the Hugging Face Hub UI (which shows “Subset”), reducing confusion for new users. Supports `subset_name` in `load_dataset()` Adds `.subset_name` propert...
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true
https://github.com/huggingface/datasets/pull/7656
7,656
fix(iterable): ensure MappedExamplesIterable supports state_dict for resume
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2025-06-29T07:50:13Z
2025-06-29T07:50:13Z
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Fixes #7630 ### Problem When calling `.map()` on an `IterableDataset`, resuming from a checkpoint skips a large number of samples. This is because `MappedExamplesIterable` did not implement `state_dict()` or `load_state_dict()`, so checkpointing was not properly delegated to the underlying iterable. ### What Thi...
null
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true
https://github.com/huggingface/datasets/pull/7655
7,655
Added specific use cases in Improve Performace
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2025-06-28T19:00:32Z
2025-06-28T19:00:32Z
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Fixes #2494
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https://github.com/huggingface/datasets/pull/7654
7,654
fix(load): strip deprecated use_auth_token from config_kwargs
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2025-06-28T09:20:21Z
2025-06-28T09:20:21Z
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Fixes #7504 This PR resolves a compatibility error when loading datasets via `load_dataset()` using outdated arguments like `use_auth_token`. **What was happening:** Users passing `use_auth_token` in `load_dataset(..., use_auth_token=...)` encountered a `ValueError`: BuilderConfig ParquetConfig(...) doesn't have...
null
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true
https://github.com/huggingface/datasets/pull/7653
7,653
feat(load): fallback to `load_from_disk()` when loading a saved dataset directory
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2025-06-28T08:47:36Z
2025-06-28T08:47:36Z
null
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### Related Issue Fixes #7503 Partially addresses #5044 by allowing `load_dataset()` to auto-detect and gracefully delegate to `load_from_disk()` for locally saved datasets. --- ### What does this PR do? This PR introduces a minimal fallback mechanism in `load_dataset()` that detects when the provided `p...
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https://github.com/huggingface/datasets/pull/7652
7,652
Add columns support to JSON loader for selective key filtering
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[ "I need this feature right now. It would be great if it could automatically fill in None for non-existent keys instead of reporting an error.", "> I need this feature right now. It would be great if it could automatically fill in None for non-existent keys instead of reporting an error.\r\n\r\nHi @aihao2000, Just...
2025-06-27T16:18:42Z
2025-09-04T17:35:31Z
2025-09-04T17:35:31Z
CONTRIBUTOR
false
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Fixes #7594 This PR adds support for filtering specific columns when loading datasets from .json or .jsonl files — similar to how the columns=... argument works for Parquet. As suggested, support for the `columns=...` argument (previously available for Parquet) has now been extended to **JSON and JSONL** loading v...
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https://github.com/huggingface/datasets/pull/7651
7,651
fix: Extended metadata file names for folder_based_builder
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2025-06-27T13:12:11Z
2025-06-30T08:19:37Z
null
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Fixes #7650. The metadata files generated by the `DatasetDict.save_to_file` function are not included in the folder_based_builder's metadata list, causing issues when only 1 actual data file is present, as described in issue #7650. This PR adds these filenames to the builder, allowing correct loading.
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https://github.com/huggingface/datasets/issues/7650
7,650
`load_dataset` defaults to json file format for datasets with 1 shard
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2025-06-27T12:54:25Z
2025-06-27T12:54:25Z
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### Describe the bug I currently have multiple datasets (train+validation) saved as 50MB shards. For one dataset the validation pair is small enough to fit into a single shard and this apparently causes problems when loading the dataset. I created the datasets using a DatasetDict, saved them as 50MB arrow files for st...
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https://github.com/huggingface/datasets/pull/7649
7,649
Enable parallel shard upload in push_to_hub() using num_proc
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[ "it was already added in https://github.com/huggingface/datasets/pull/7606 actually ^^'", "Oh sure sure, Closing this one as redundant." ]
2025-06-27T05:59:03Z
2025-07-07T18:13:53Z
2025-07-07T18:13:52Z
CONTRIBUTOR
false
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Fixes #7591 ### Add num_proc support to `push_to_hub()` for parallel shard upload This PR adds support for parallel upload of dataset shards via the `num_proc` argument in `Dataset.push_to_hub()`. 📌 While the `num_proc` parameter was already present in the `push_to_hub()` signature and correctly passed to `_p...
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