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https://api.github.com/repos/huggingface/datasets/issues/7943 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7943/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7943/comments | https://api.github.com/repos/huggingface/datasets/issues/7943/events | https://github.com/huggingface/datasets/pull/7943 | 3,809,778,662 | PR_kwDODunzps68-rLO | 7,943 | Add _generate_shards | {
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] | 2026-01-13T17:10:03Z | 2026-01-14T16:46:53Z | 2026-01-14T16:46:51Z | null | MEMBER | [] | null | null | null | null | Useful to list a dataset's shards:
```python
from datasets import load_dataset_builder, StreamingDownloadManager
dlm = StreamingDownloadManager()
def get_shards(dataset_name, *args, **kwargs):
b = load_dataset_builder(dataset_name, *args, **kwargs)
splits = b._split_generators(dlm)
return list(... | {
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https://api.github.com/repos/huggingface/datasets/issues/7942 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7942/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7942/comments | https://api.github.com/repos/huggingface/datasets/issues/7942/events | https://github.com/huggingface/datasets/pull/7942 | 3,808,890,451 | PR_kwDODunzps687sR_ | 7,942 | add _OverridableIOWrapper | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7942). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-01-13T13:37:09Z | 2026-01-13T13:40:21Z | 2026-01-13T13:38:02Z | null | MEMBER | [] | null | null | null | null | fix https://github.com/huggingface/datasets/issues/7936 | {
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https://api.github.com/repos/huggingface/datasets/issues/7941 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7941/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7941/comments | https://api.github.com/repos/huggingface/datasets/issues/7941/events | https://github.com/huggingface/datasets/pull/7941 | 3,807,800,603 | PR_kwDODunzps684EZa | 7,941 | Remove Python 3.7 and Python 2 code paths from _dill.py | {
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Datasets requires Python 3.9+ (since PR #7474).
There's some dill specific code branches checking for earlier versions of python which can be removed. | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7940 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7940/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7940/comments | https://api.github.com/repos/huggingface/datasets/issues/7940/events | https://github.com/huggingface/datasets/pull/7940 | 3,807,386,503 | PR_kwDODunzps682sBj | 7,940 | Improve readability and documentation of indexing integration tests | {
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This PR improves the readability and maintainability of the indexing integration tests by adding clear, detailed comments throughout the test suite.
### Motivation
The indexing tests cover multiple backends (FAISS and Elasticsearch) and involve non-trivial workflows such as vector creation, indexing, q... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7939 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7939/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7939/comments | https://api.github.com/repos/huggingface/datasets/issues/7939/events | https://github.com/huggingface/datasets/issues/7939 | 3,806,889,870 | I_kwDODunzps7i6IeO | 7,939 | datasets.load_from_disk progress bar optional manual control | {
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} | ### Feature request
This is tangentially related to [https://github.com/huggingface/datasets/issues/7918](https://github.com/huggingface/datasets/issues/7918).
When loading a dataset with > 16 files a progress bar is shown (unless stdout is redirected or [https://github.com/huggingface/datasets/pull/7919](https://git... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7938 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7938/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7938/comments | https://api.github.com/repos/huggingface/datasets/issues/7938/events | https://github.com/huggingface/datasets/pull/7938 | 3,804,486,642 | PR_kwDODunzps68tYX1 | 7,938 | Fix method to retrieve attributes from file object | {
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] | 2026-01-12T14:08:31Z | 2026-01-12T14:13:12Z | 2026-01-12T14:10:12Z | null | MEMBER | [] | null | null | null | null | fix http://github.com/huggingface/datasets/issues/7936 | {
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https://api.github.com/repos/huggingface/datasets/issues/7937 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7937/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7937/comments | https://api.github.com/repos/huggingface/datasets/issues/7937/events | https://github.com/huggingface/datasets/pull/7937 | 3,803,185,984 | PR_kwDODunzps68pBId | 7,937 | Fix duplicate log messages by disabling log propagation by default | {
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```python
import logging
logging.basicConfig(level=logging.WARNING)
from datasets.utils.logging import get_logger
get_logger("datasets.load").warning("This appears twice")
```
Outputs:
```
This appears ... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7936 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7936/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7936/comments | https://api.github.com/repos/huggingface/datasets/issues/7936/events | https://github.com/huggingface/datasets/issues/7936 | 3,795,750,271 | I_kwDODunzps7iPo1_ | 7,936 | _add_retries_to_file_obj_read_method makes file_obj invalid for pyarrow | {
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"hmm not sure how to fix this, I believe `file_obj.__getattr__ = lambda _, attr: getattr(orig_file_obj, attr)` would make all the methods point to the original file_obj",
"> hmm not sure how to fix this, I believe `file_obj.__getattr__ = lambda _, attr: getattr(orig_file_obj, attr)` would make all the methods poi... | 2026-01-09T07:05:25Z | 2026-01-14T13:47:50Z | 2026-01-13T13:38:03Z | null | NONE | [] | null | null | {
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} | ### Describe the bug
I'm trying to use `load_dataset` to construct a dataset that read parquet data on HDFS streamingly, like
```python
ds = load_dataset(
"parquet",
data_files={
"train": "hdfs://xxx/train*.parquet",
"test": "hdfs://xxx/test*.parquet"
},
streaming=True,
)
```
I encounte... | {
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https://api.github.com/repos/huggingface/datasets/issues/7935 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7935/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7935/comments | https://api.github.com/repos/huggingface/datasets/issues/7935/events | https://github.com/huggingface/datasets/pull/7935 | 3,795,376,274 | PR_kwDODunzps68QDVY | 7,935 | Bug fix: Add HDFS hostname to protocol prefix | {
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"Hi ! is it related to https://github.com/huggingface/datasets/issues/7934 ?\r\n\r\nIt's not clear to me why the protocol would need this, given hostname should be present in `pattern` already\r\n\r\n```python\r\nresolve_pattern(\"hdfs://hostname/user/xxx\", ...)\r\n```",
"> Hi ! is it related to #7934 ?\r\n> \r\... | 2026-01-09T03:59:45Z | 2026-01-15T04:06:17Z | null | null | NONE | [] | null | null | null | null | For HDFS url with hostname like `hdfs://hostname/user/xxx`, the function `resolve_pattern` would drop the hostname, and outputs `hdfs:///user/xxx`. This may break later file operations by trying to connect to wrong HDFS cluster. | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7934 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7934/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7934/comments | https://api.github.com/repos/huggingface/datasets/issues/7934/events | https://github.com/huggingface/datasets/issues/7934 | 3,792,642,445 | I_kwDODunzps7iDyGN | 7,934 | xPath cannot handle hdfs:///xxxx properly | {
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} | ### Describe the bug
_as_str('hdfs:///xxxx') would return hdfs://xxxx. Removing one / and making the path invalid.
For the use case like
```
ds = load_dataset(
"parquet",
data_files={
"train": "hdfs:///user/path/to/data/train*.parquet",
},
streaming=True,
storage_options={
"host": ... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7933 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7933/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7933/comments | https://api.github.com/repos/huggingface/datasets/issues/7933/events | https://github.com/huggingface/datasets/pull/7933 | 3,780,607,384 | PR_kwDODunzps67fNaP | 7,933 | feat: Add Apache TsFile format support | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7933). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2026-01-05T08:28:12Z | 2026-01-06T10:26:51Z | null | null | NONE | [] | null | null | null | null | # Add Apache TsFile format support
Adds support for loading `.tsfile` datasets. Closes #7922.
## What's TsFile?
[Apache TsFile](https://tsfile.apache.org/) is a columnar time-series format popular in IoT. The TsFile community requested this integration and offered to help maintain it.
## What I did
Creat... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7932 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7932/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7932/comments | https://api.github.com/repos/huggingface/datasets/issues/7932/events | https://github.com/huggingface/datasets/pull/7932 | 3,777,725,050 | PR_kwDODunzps67WqhL | 7,932 | Fix duplicate keyword conflict in load_dataset_builder | {
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"Hi HuggingFace team\r\nThis PR fixes issue #4910 by safely merging builder_kwargs and config_kwargs to avoid duplicate keyword errors. \r\nA regression test is included to ensure this does not happen again. \r\n\r\nPlease let me know if you’d like any changes. Thanks!\r\n"
] | 2026-01-03T05:49:06Z | 2026-01-03T05:52:02Z | null | null | NONE | [] | null | null | null | null | Fixes #4910
This PR fixes a bug where passing the same keyword in builder_kwargs and
config_kwargs caused a TypeError in load_dataset_builder.
The kwargs are now merged safely so config_kwargs override builder_kwargs
without duplication. A regression test is added to prevent this from
happening again.
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https://api.github.com/repos/huggingface/datasets/issues/7931 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7931/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7931/comments | https://api.github.com/repos/huggingface/datasets/issues/7931/events | https://github.com/huggingface/datasets/issues/7931 | 3,777,662,799 | I_kwDODunzps7hKo9P | 7,931 | Enable CORS + HTTP Range support for browser partial reads on cas-bridge.xethub.hf.co (Parquet row-group access) | {
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"Cc @assafvayner maybe ? or @cfahlgren1 @severo if you've already encountered this ?",
"OK, reproduced with hyparquet on https://huggingface.co/spaces/hyperparam/hyperparam, see https://huggingface.co/spaces/hyperparam/hyperparam?url=https%3A%2F%2Fhuggingface.co%2Fdatasets%2Ffacebook%2Fresearch-plan-gen%2Fblob%2F... | 2026-01-03T04:23:54Z | 2026-02-24T21:31:37Z | 2026-02-24T16:35:44Z | null | NONE | [] | null | null | {
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} | ### Feature request
## Summary
Browser-based data tools need Range requests to read Parquet efficiently (footer + selected row groups). Downloads from the Hub redirect to cas-bridge.xethub.hf.co (Xet bridge). The redirected host fails CORS preflight for Range/HEAD workflows, blocking partial reads. ([Hugging Face](htt... | {
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https://api.github.com/repos/huggingface/datasets/issues/7930 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7930/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7930/comments | https://api.github.com/repos/huggingface/datasets/issues/7930/events | https://github.com/huggingface/datasets/pull/7930 | 3,777,628,848 | PR_kwDODunzps67WYwc | 7,930 | Proposal: Protein 3D Structure Visualization for Dataset Viewer | {
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"cc @georgia-hf - Following up on your question about protein visualization for the Dataset Viewer. This proposal recommends 3Dmol.js (~150KB gzipped) as a lightweight alternative to Mol* (~1.3MB gzipped).\n\nLooking forward to your feedback!",
"Exciting ! cc @cfahlgren1 @severo for the Viewer part\r\n\r\nFor the... | 2026-01-03T03:30:01Z | 2026-02-10T17:57:17Z | null | null | NONE | [] | null | null | null | null | # Proposal: Protein 3D Structure Visualization for HuggingFace Dataset Viewer
## Executive Summary
This proposal outlines adding 3D protein structure visualization to the HuggingFace Dataset Viewer, enabling users to interactively view PDB and mmCIF molecular structures directly within the dataset preview interface.
... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7929 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7929/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7929/comments | https://api.github.com/repos/huggingface/datasets/issues/7929/events | https://github.com/huggingface/datasets/pull/7929 | 3,776,098,655 | PR_kwDODunzps67Rayd | 7,929 | Raise early for invalid `revision` in `load_dataset` | {
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"Passes\r\n```sh\r\npytest -k \"LoadTest and test_load_dataset_invalid_revision_with_cache\"\r\n```\r\n\r\nFails\r\n```sh\r\ngit checkout cc2399019a3a547ebc31ec68a1ff99abd4ec93ce\r\npytest -k \"LoadTest and test_load_dataset_invalid_revision_with_cache\"\r\n```\r\n\r\nRan `make test`, but failures look unrelated to... | 2026-01-02T10:40:49Z | 2026-01-09T11:08:44Z | 2026-01-09T11:08:43Z | null | CONTRIBUTOR | [] | null | null | null | null | Solves https://github.com/huggingface/datasets/issues/7928
Raise early for invalid revisions
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https://api.github.com/repos/huggingface/datasets/issues/7928 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7928/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7928/comments | https://api.github.com/repos/huggingface/datasets/issues/7928/events | https://github.com/huggingface/datasets/issues/7928 | 3,775,842,185 | I_kwDODunzps7hDseJ | 7,928 | `load_dataset` `revision` param not respected when fetching from cache | {
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"This might be better placed as a feature request not a bug, since the logging `Using the latest cached version of the dataset since sentientfutures/ahb couldn't be found on the Hugging Face Hub` is clear.",
"https://github.com/huggingface/datasets/pull/7929 This only solves the case of invalid revisions. Fetchin... | 2026-01-02T08:20:47Z | 2026-04-17T16:01:16Z | null | null | CONTRIBUTOR | [] | null | null | {
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} | ### Describe the bug
`datasets.load_dataset` `revision` semantics are a bit inconsistent when the dataset is not found on the huggingface hub. When fetching the latest cached version of the dataset, the `revision` argument is ignored, so long as any cached versions of the dataset already exist in the HF cache.
### St... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7927 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7927/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7927/comments | https://api.github.com/repos/huggingface/datasets/issues/7927/events | https://github.com/huggingface/datasets/issues/7927 | 3,775,302,438 | I_kwDODunzps7hBosm | 7,927 | Using Stateful Dataloader with Split Dataset By Node and DCP for DDP | {
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"Does it need to be pickled?\n\n```python\n def load_state_dict(self, state_dict):\n hf_state = pickle.loads(state_dict[\"data\"])\n self.train_dataset.load_state_dict(hf_state)\n\n def state_dict(self):\n return {\"data\": pickle.dumps(self.train_dataset.state_dict())}\n```",
"Pickling... | 2026-01-01T22:27:07Z | 2026-02-01T06:13:30Z | null | null | NONE | [] | null | null | {
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} | ### Describe the bug
I am trying to determine how to save and load the Stateful Dataloader State with DCP and Split Dataset by Node for DDP.
Currently, I am running into the issue where I am receiving a slow resume.
```
Neither dataset nor iter(dataset) defines state_dict/load_state_dict so we are naively fast-forwar... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7926 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7926/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7926/comments | https://api.github.com/repos/huggingface/datasets/issues/7926/events | https://github.com/huggingface/datasets/pull/7926 | 3,773,696,472 | PR_kwDODunzps67Jxxz | 7,926 | Add lightweight PDB (Protein Data Bank) file support | {
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This PR adds support for loading PDB (Protein Data Bank) files with `load_dataset()`, following the **ImageFolder pattern** where **one row = one structure**.
Based on feedback from @lhoestq in #7930, this approach makes datasets more practical for ML workflows:
- Each row is independent, enabling train/te... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7925 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7925/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7925/comments | https://api.github.com/repos/huggingface/datasets/issues/7925/events | https://github.com/huggingface/datasets/pull/7925 | 3,773,577,850 | PR_kwDODunzps67JW3g | 7,925 | feat: Add mmCIF file support for macromolecular structures | {
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This PR adds support for loading mmCIF (macromolecular Crystallographic Information File) files with `load_dataset()`, following the **ImageFolder pattern** where **one row = one structure**.
Based on feedback from @lhoestq in #7930, this approach makes datasets more practical for ML workflows:
- Each row ... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7924 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7924/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7924/comments | https://api.github.com/repos/huggingface/datasets/issues/7924/events | https://github.com/huggingface/datasets/pull/7924 | 3,773,509,771 | PR_kwDODunzps67JHNF | 7,924 | Add lightweight FASTQ file format support | {
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This PR adds support for loading FASTQ files directly with `load_dataset()`.
FASTQ is an extension of FASTA that includes quality scores for each base, widely used for storing output from high-throughput sequencing instruments.
### Key Features
- **Zero external dependencies** - Pure Python parser based o... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7923 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7923/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7923/comments | https://api.github.com/repos/huggingface/datasets/issues/7923/events | https://github.com/huggingface/datasets/pull/7923 | 3,773,472,998 | PR_kwDODunzps67I-y3 | 7,923 | feat(fasta): add lightweight FASTA file format support | {
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This PR adds support for loading FASTA files directly with `load_dataset()`, addressing feedback from #7851.
FASTA is a text-based format for representing nucleotide sequences (DNA/RNA) or peptide sequences (proteins), widely used in bioinformatics.
## Key Features
- **Zero external dependencies** - Uses... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7922 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7922/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7922/comments | https://api.github.com/repos/huggingface/datasets/issues/7922/events | https://github.com/huggingface/datasets/issues/7922 | 3,772,247,021 | I_kwDODunzps7g1-vt | 7,922 | Support Apache TsFile Datasets | {
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"A large quantity of industrial timeseries data has been stored as TsFile, and I have been constantly hearing about AI fellows complaining about the lack of data or the insufficiency of data quality.\n\nI like the ambition that uses TsFile as the bridge between AI research and industrial analysis requirements. This... | 2025-12-31T08:07:51Z | 2026-04-29T09:23:49Z | null | null | NONE | [] | null | null | {
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} | ### Feature request
I would love to use Hugging Face datasets library to directly load datasets composed of .tsfile files, for example:
`ds = load_dataset("username/dataset-with-tsfile-files")`
This feature would allow researchers working on time-series tasks to seamlessly integrate datasets stored in the Apache TsF... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7921 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7921/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7921/comments | https://api.github.com/repos/huggingface/datasets/issues/7921/events | https://github.com/huggingface/datasets/pull/7921 | 3,766,879,197 | PR_kwDODunzps66zE_q | 7,921 | Add beginner-friendly quick installation verification tip in README | {
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This improves onboarding experience for first-time users and reduces confusion for beginners.
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https://api.github.com/repos/huggingface/datasets/issues/7920 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7920/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7920/comments | https://api.github.com/repos/huggingface/datasets/issues/7920/events | https://github.com/huggingface/datasets/pull/7920 | 3,766,070,566 | PR_kwDODunzps66wgLx | 7,920 | Add progress_format support for machine-readable progress output | {
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Adds support to , enabling machine-readable JSON progress output similar to [huggingface/tokenizers#1921](https://github.com/huggingface/tokenizers/pull/1921).
## Motivation
When using `datasets` in automated pipelines or UI applications, it's useful to emit machine-readable progress instead of ANSI prog... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7919 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7919/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7919/comments | https://api.github.com/repos/huggingface/datasets/issues/7919/events | https://github.com/huggingface/datasets/pull/7919 | 3,765,768,457 | PR_kwDODunzps66vmQC | 7,919 | Fix load_from_disk progress bar with redirected stdout | {
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"this seems to contradict the comment that says \r\n\r\n> set `disable=None` rather than `disable=False` by default to disable progress bar when no TTY attached\r\n\r\nI believe the right approach is to do the same as in https://github.com/huggingface/huggingface_hub/pull/2698",
"> this seems to contradict the co... | 2025-12-28T15:39:31Z | 2026-01-16T14:44:49Z | 2026-01-16T14:44:49Z | null | CONTRIBUTOR | [] | null | null | null | null | Fixes #7918
## Problem
When using `load_from_disk()` with `contextlib.redirect_stdout()`, the progress bar was not showing even for datasets with >16 files.
## Root Cause
The `disable` parameter was set to `None` which triggers TTY auto-detection. This fails when stdout is redirected, causing the progress ba... | {
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https://api.github.com/repos/huggingface/datasets/issues/7918 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7918/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7918/comments | https://api.github.com/repos/huggingface/datasets/issues/7918/events | https://github.com/huggingface/datasets/issues/7918 | 3,765,489,462 | I_kwDODunzps7gcM82 | 7,918 | datasets.load_from_disk doesn't show progress bar | {
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} | ### Describe the bug
This is the inverse of the bug at [https://github.com/huggingface/datasets/issues/7030](https://github.com/huggingface/datasets/issues/7030), i.e. that `datasets.load_from_disk(path)` displays no progress bar. My dataset has > 16 files in it.
I am redirecting stdout as I capture the log, could th... | {
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https://api.github.com/repos/huggingface/datasets/issues/7917 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7917/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7917/comments | https://api.github.com/repos/huggingface/datasets/issues/7917/events | https://github.com/huggingface/datasets/issues/7917 | 3,764,913,807 | I_kwDODunzps7gaAaP | 7,917 | IterableDataset supports automatic sharding | {
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"You can already use `.shard()` instead like this:\n\n```python\ndataset = dataset.shard(index=rank, num_shards=world_size)\n```\n\nnote that it requires that `dataset.num_shards >= world_size`, and that it may result in nodes having the same number of shards +- 1",
"> You can already use `.shard()` instead like ... | 2025-12-27T16:48:29Z | 2025-12-29T16:06:52Z | null | null | NONE | [] | null | null | {
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Added sharding function support to the streaming IterableDataset, allowing users to adjust the number of shards according to their training resources. For example:
```
dataset = load_dataset(*, stream=True)
dataset = dataset.shard(num_shards=num_shards, num_samples=num_samples) #We may need to know... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7915 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7915/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7915/comments | https://api.github.com/repos/huggingface/datasets/issues/7915/events | https://github.com/huggingface/datasets/issues/7915 | 3,762,042,396 | I_kwDODunzps7gPDYc | 7,915 | GDPval dataset Word docs corrupted | {
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"tentatively tagging @simonpfish ^\n\n(if it's an option you could enable PRs/Discussions on your dataset on HF)"
] | 2025-12-25T13:56:55Z | 2025-12-26T09:06:13Z | null | null | NONE | [] | null | null | {
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} | The [openai/gdpval](https://huggingface.co/datasets/openai/gdpval) dataset on Hugging Face contains Word .docx files with two types of corruption that cause Microsoft Word to display an "unreadable content" error.
### Root Causes
1. **Corrupted settings.xml**: The `word/settings.xml` file uses incorrect namespace pre... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7914 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7914/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7914/comments | https://api.github.com/repos/huggingface/datasets/issues/7914/events | https://github.com/huggingface/datasets/issues/7914 | 3,760,894,100 | I_kwDODunzps7gKrCU | 7,914 | [ROCm] please install 'torchcodec' | {
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"I was able to install torchcodec by building it from source and have put together a PR: https://github.com/vllm-project/vllm/pull/31323\n\nStill I think it would make this framework more robust to add at least one fallback lib (that is more widely used) in place should torchcodec installation fail or library is no... | 2025-12-24T19:39:17Z | 2026-03-04T10:18:33Z | null | null | NONE | [] | null | null | {
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} | ### Describe the bug
Datasets library is widely used by many Python packages. Naturally, it is a requirement on many platforms. This includes vLLM for ROCm. During audio dataset tests, there is an exception triggered:
```python
def decode_example(
self, value: dict, token_per_repo_id: Optional[dict[str, Un... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7913 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7913/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7913/comments | https://api.github.com/repos/huggingface/datasets/issues/7913/events | https://github.com/huggingface/datasets/pull/7913 | 3,758,884,376 | PR_kwDODunzps66aEsF | 7,913 | Add lance format support | {
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"Mentioned https://github.com/huggingface/datasets/issues/7863 as well",
"@pdames for vis",
"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7913). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last upda... | 2025-12-24T00:52:20Z | 2026-01-09T10:48:29Z | 2026-01-09T10:48:29Z | null | CONTRIBUTOR | [] | null | null | null | null | Add lance format as one of the `packaged_modules`.
```py
import datasets
ds = datasets.load_dataset("org/lance_repo", split="train")
# Or
ds = datasets.load_dataset("./local/data.lance")
``` | {
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https://api.github.com/repos/huggingface/datasets/issues/7912 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7912/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7912/comments | https://api.github.com/repos/huggingface/datasets/issues/7912/events | https://github.com/huggingface/datasets/pull/7912 | 3,755,023,829 | PR_kwDODunzps66NQzG | 7,912 | fix low but large example indexerror | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7912). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-12-22T19:53:59Z | 2026-01-09T13:23:52Z | 2026-01-09T13:23:51Z | null | CONTRIBUTOR | [] | null | null | null | null | Fixes #7911.
This PR simply implements the approach outlined in the corresponding issue, that if we have large examples, the number of shards should never be more than the number of samples. This is an absolute edge case, but can happen for image data. | {
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https://api.github.com/repos/huggingface/datasets/issues/7911 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7911/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7911/comments | https://api.github.com/repos/huggingface/datasets/issues/7911/events | https://github.com/huggingface/datasets/issues/7911 | 3,753,447,559 | I_kwDODunzps7fuRCH | 7,911 | IndexError when saving few large examples to disk | {
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I ran into this issue when processing a file (900MB) with just one example but simplified for a quicker reproducer below. The problem is that, if `num_shards` is not explicitly set, we calculate it manually using https://github.com/huggingface/datasets/blob/main/src/datasets/utils/py_utils.py#L96 ... | {
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https://api.github.com/repos/huggingface/datasets/issues/7910 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7910/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7910/comments | https://api.github.com/repos/huggingface/datasets/issues/7910/events | https://github.com/huggingface/datasets/pull/7910 | 3,749,894,414 | PR_kwDODunzps658oGv | 7,910 | Enhance cast_column() with cast_kwargs parameter | {
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"@lhoestq "
] | 2025-12-20T10:09:11Z | 2026-02-23T04:55:44Z | null | null | NONE | [] | null | null | null | null | Fixes #7909, #7766.
| null | {
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expose `cast(**cast_kwargs)` to `cast_column()`
https://github.com/huggingface/datasets/blob/0feb65dd8733191dd2d1e74215b422fc5939a56a/src/datasets/arrow_dataset.py#L2205
### Motivation
`cast_column()` wraps `cast()` function without exposing any `cast()` args. For large multi-modal datasets, e.g... | null | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7907). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-12-19T15:02:23Z | 2025-12-19T15:06:46Z | 2025-12-19T15:03:22Z | null | MEMBER | [] | null | null | null | null | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7906 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7906/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7906/comments | https://api.github.com/repos/huggingface/datasets/issues/7906/events | https://github.com/huggingface/datasets/pull/7906 | 3,747,764,992 | PR_kwDODunzps651jiI | 7,906 | Don't save original_shard_lengths by default for backward compat | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7906). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-12-19T14:44:09Z | 2025-12-19T14:57:25Z | 2025-12-19T14:57:23Z | null | MEMBER | [] | null | null | null | null | following #7897
but let users enable it with `datasets.config.SAVE_ORIGINAL_SHARD_LENGTHS = True`
this is useful for the Dataset Viewer to know where each row comes from after converting to parquet | {
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https://api.github.com/repos/huggingface/datasets/issues/7905 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7905/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7905/comments | https://api.github.com/repos/huggingface/datasets/issues/7905/events | https://github.com/huggingface/datasets/issues/7905 | 3,734,233,245 | I_kwDODunzps7ek-Cd | 7,905 | Unbounded network usage when opening Data Studio | {
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"cc @cfahlgren1",
"Thanks for reporting! Looking into this!",
"This should be fixed. Thank you for your patience! 🤗"
] | 2025-12-16T10:45:02Z | 2026-01-06T15:04:43Z | 2026-01-06T15:04:43Z | null | NONE | [] | null | null | {
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} | ### Describe the bug
Opening the Data Studio tab on a dataset page triggers continuous and unbounded network traffic. This issue occurs across multiple browsers and continues even without user interaction.
### Steps to reproduce the bug
https://huggingface.co/datasets/slone/nllb-200-10M-sample/viewer
### Expected... | {
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https://api.github.com/repos/huggingface/datasets/issues/7904 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7904/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7904/comments | https://api.github.com/repos/huggingface/datasets/issues/7904/events | https://github.com/huggingface/datasets/issues/7904 | 3,727,978,498 | I_kwDODunzps7eNHAC | 7,904 | Request: Review pending neuroimaging PRs (#7886 BIDS loader, #7887 lazy loading) | {
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"Hi ! sure I'll be happy to take a look, sorry for the delay :)"
] | 2025-12-14T20:34:31Z | 2025-12-15T11:25:29Z | null | null | CONTRIBUTOR | [] | null | null | {
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} | ## Summary
I'm building production neuroimaging pipelines that depend on `datasets` and would benefit greatly from two pending PRs being reviewed/merged.
## Pending PRs
| PR | Description | Status | Open Since |
|----|-------------|--------|------------|
| [#7886](https://github.com/huggingface/datasets/pull/7886) |... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7903 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7903/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7903/comments | https://api.github.com/repos/huggingface/datasets/issues/7903/events | https://github.com/huggingface/datasets/pull/7903 | 3,723,395,305 | PR_kwDODunzps64kO0d | 7,903 | Docs: add minimal usage example to dataset card guidelines | {
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https://api.github.com/repos/huggingface/datasets/issues/7902 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7902/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7902/comments | https://api.github.com/repos/huggingface/datasets/issues/7902/events | https://github.com/huggingface/datasets/issues/7902 | 3,723,281,150 | I_kwDODunzps7d7ML- | 7,902 | The child process retrieves the dataset directly from the main process instead of executing `memory_mapped_arrow_table_from_file`. | {
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"Memory mapping is actually the way for processes to share memory efficiently and without copy. It is efficient when on are using a local disk, and it's discouraged to use it on remote disk for the reasons you observed.\n\nWhat you can do instead is save the dataset as Parquet on your remote storage (or on Hugging ... | 2025-12-12T12:37:44Z | 2025-12-15T11:48:16Z | null | null | NONE | [] | null | null | {
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} | ### Feature request
The child process retrieves the dataset directly from the main process instead of executing `memory_mapped_arrow_table_from_file`.
### Motivation
Because my local disk space is insufficient, I can only store a dataset on a remote Ceph server and process it using datasets.
I used the data-juicer[h... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7901 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7901/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7901/comments | https://api.github.com/repos/huggingface/datasets/issues/7901/events | https://github.com/huggingface/datasets/issues/7901 | 3,722,243,543 | I_kwDODunzps7d3O3X | 7,901 | ShuffledDataSourcesArrowExamplesIterable cannot properly resume from checkpoint | {
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"Hi ! As you can read in the logs, the shuffle buffer content is lost when resuming a shuffled dataset. The default size is 1000 examples, but you can tweak it\n\ne.g. if you run your code with this\n\n```diff\n- ds = Dataset.from_dict({\"a\": range(12)}).to_iterable_dataset(num_shards=1)\n- ds = ds.shuffle(seed=42... | 2025-12-12T06:57:32Z | 2025-12-16T19:34:46Z | null | null | NONE | [] | null | null | {
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} | ### Describe the bug
ShuffledDataSourcesArrowExamplesIterable cannot properly resume from checkpoint
### Steps to reproduce the bug
1. The reproducible code is as follows：
```
from datasets import Dataset, concatenate_datasets, interleave_datasets
ds = Dataset.from_dict({"a": range(12)}).to_iterable_dataset(num_sha... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7900 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7900/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7900/comments | https://api.github.com/repos/huggingface/datasets/issues/7900/events | https://github.com/huggingface/datasets/issues/7900 | 3,711,751,590 | I_kwDODunzps7dPNWm | 7,900 | `Permission denied` when sharing cache between users | {
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"I remember a fix from last year to usr the current umask for filelock 3.10.0, which filelock version are you using ? can you try another version ?",
"I believe we we are using `filelock==3.19.1`. Do you have a recommended version to use?",
"Our test suite has been testing all versions over time for years now, ... | 2025-12-09T16:41:47Z | 2026-01-09T11:08:36Z | null | null | NONE | [] | null | null | {
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} | ### Describe the bug
We want to use `datasets` and `transformers` on a shared machine. Right now, each user has a separate HF_HOME in their home directory. To reduce duplicates of the datasets, we want to share that cache. While experimenting, we are running into `Permission denied` errors.
It looks like this was sup... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7899 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7899/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7899/comments | https://api.github.com/repos/huggingface/datasets/issues/7899/events | https://github.com/huggingface/datasets/pull/7899 | 3,707,063,236 | PR_kwDODunzps63t1LS | 7,899 | Add inspect_ai eval logs support | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7899). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"Very cool! \r\n\r\nAny reason not to directly use inspect for loading/converting from t... | 2025-12-08T16:14:40Z | 2025-12-09T14:45:15Z | 2025-12-09T14:45:13Z | null | MEMBER | [] | null | null | null | null | Support for .eval log files from inspect_ai
They are actually ZIP files according to the source code at https://github.com/UKGovernmentBEIS/inspect_ai/blob/main/src/inspect_ai/log/_log.py
Unfortunately their format can't be converted to Parquet, so I had to JSON-encode all the nested values
```python
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https://api.github.com/repos/huggingface/datasets/issues/7898 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7898/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7898/comments | https://api.github.com/repos/huggingface/datasets/issues/7898/events | https://github.com/huggingface/datasets/pull/7898 | 3,698,376,429 | PR_kwDODunzps63Q9BO | 7,898 | docs: making PyPi to PyPI ensuring no spelling errors | {
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"Hey pls review "
] | 2025-12-05T10:20:48Z | 2025-12-10T14:16:31Z | null | null | NONE | [] | null | null | null | null | This PR adds a short clarification in the README section wherein PyPI the python package was mistakenly typed as PyPi which i have fixed
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7897). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-12-03T17:56:55Z | 2025-12-05T16:21:06Z | 2025-12-05T16:21:03Z | null | MEMBER | [] | null | null | null | null | will be useful for the Viewer, to know what (original) shard each row belongs to
cc @cfahlgren1
next step is use it in Dataset Viewer and expose an API that returns the file containing the row at rowId
(took the opportunity to remove unusued code) | {
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https://api.github.com/repos/huggingface/datasets/issues/7896 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7896/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7896/comments | https://api.github.com/repos/huggingface/datasets/issues/7896/events | https://github.com/huggingface/datasets/pull/7896 | 3,688,480,675 | PR_kwDODunzps62vZtn | 7,896 | fix: force contiguous copy for sliced list arrays in embed_array_storage | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7896). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"Hi @The-Obstacle-Is-The-Way, I haven't had a chance to try your repro at https://github... | 2025-12-03T04:34:26Z | 2025-12-19T16:45:54Z | null | null | CONTRIBUTOR | [] | null | null | null | null | ## Summary
Fixes SIGKILL crash in `embed_array_storage` when processing sliced/sharded datasets with nested types like `Sequence(Nifti())` or `Sequence(Image())`.
**Root cause**: When `ds.shard()` or `ds.select()` creates a sliced view, `array.values` on a sliced `ListArray` returns values with internal offset refere... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7895 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7895/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7895/comments | https://api.github.com/repos/huggingface/datasets/issues/7895/events | https://github.com/huggingface/datasets/pull/7895 | 3,688,479,825 | PR_kwDODunzps62vZik | 7,895 | fix: use temp files in push_to_hub to prevent OOM on large datasets | {
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"Closing this PR.\n\nAfter further investigation (prompted by @lhoestq's feedback on #7893), I discovered that `free_memory=True` does work correctly - memory doesn't actually accumulate in the `additions` list as I originally thought.\n\nI tested standard `push_to_hub()` with 902 shards and it processed 625 shards... | 2025-12-03T04:33:55Z | 2025-12-06T13:58:44Z | 2025-12-05T22:47:50Z | null | CONTRIBUTOR | [] | null | null | null | null | ## Summary
Fixes memory accumulation in `_push_parquet_shards_to_hub_single` that causes OOM when uploading large datasets with many shards.
**Root cause**: The current implementation stores ALL parquet shard bytes in memory via `BytesIO`, accumulating in the `additions` list. For N shards of ~300MB each, this requir... | {
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https://api.github.com/repos/huggingface/datasets/issues/7894 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7894/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7894/comments | https://api.github.com/repos/huggingface/datasets/issues/7894/events | https://github.com/huggingface/datasets/issues/7894 | 3,688,455,006 | I_kwDODunzps7b2Vte | 7,894 | embed_table_storage crashes (SIGKILL) on sharded datasets with Sequence() nested types | {
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"I wasn't able to reproduce the crash on my side (macos arm 54, pyarrow 22 and a nifti file I found [online](https://s3.amazonaws.com/openneuro.org/ds004884/sub-M2001/ses-1076/anat/sub-M2001_ses-1076_acq-tfl3_run-4_T1w.nii.gz?versionId=9aVGb3C.VcoBgxrhNzFnL6O0MvxQsXX7&AWSAccessKeyId=AKIARTA7OOV5WQ3DGSOB&Signature=L... | 2025-12-03T04:20:06Z | 2025-12-06T13:10:34Z | null | null | CONTRIBUTOR | [] | null | null | {
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`embed_table_storage` crashes with SIGKILL (exit code 137) when processing sharded datasets containing `Sequence()` nested types like `Sequence(Nifti())`. Likely affects `Sequence(Image())` and `Sequence(Audio())` as well.
The crash occurs at the C++ level with no Python traceback.
### Related Issues
- #... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7893 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7893/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7893/comments | https://api.github.com/repos/huggingface/datasets/issues/7893/events | https://github.com/huggingface/datasets/issues/7893 | 3,688,454,085 | I_kwDODunzps7b2VfF | 7,893 | push_to_hub OOM: _push_parquet_shards_to_hub accumulates all shard bytes in memory | {
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"`preupload_lfs_files` removes the parquet bytes in `shard_addition` since the default is `free_memory=True`: it doesn't accumulate in memory. Can you check this is indeed the case, i.e. that `shard_addition.path_or_fileobj` is indeed empty ?",
"@lhoestq Thank you for pushing back on this and helping me understan... | 2025-12-03T04:19:34Z | 2025-12-05T22:45:59Z | 2025-12-05T22:44:16Z | null | CONTRIBUTOR | [] | null | null | {
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Large dataset uploads crash or hang due to memory exhaustion. This appears to be the root cause of several long-standing issues.
### Related Issues
This is the root cause of:
- #5990 - Pushing a large dataset on the hub consistently hangs (46 comments, open since 2023)
- #7400 - 504 Gateway Timeout when u... | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7892). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-12-01T16:35:07Z | 2025-12-19T14:13:43Z | 2025-12-19T14:13:43Z | null | CONTRIBUTOR | [] | null | null | null | null | When trying to upload nifti datasets lazily I got the error:
```python
from pathlib import Path
from datasets import load_dataset
nifti_dir = Path("<local_path>")
dataset = load_dataset(
"niftifolder",
data_dir=str(nifti_dir.absolute()),
streaming=True,
)
dataset.push_to_hub(repo... | {
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https://api.github.com/repos/huggingface/datasets/issues/7891 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7891/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7891/comments | https://api.github.com/repos/huggingface/datasets/issues/7891/events | https://github.com/huggingface/datasets/pull/7891 | 3,681,592,636 | PR_kwDODunzps62YNeR | 7,891 | fix(fingerprint): treat TMPDIR as strict API and fail (Issue #7877) | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7891). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"> lgtm !\r\n\r\nthanks for taking a look!"
] | 2025-12-01T15:37:57Z | 2025-12-16T14:24:11Z | 2025-12-16T14:20:46Z | null | CONTRIBUTOR | [] | null | null | null | null | Fixes #7877 and follows up on feedback from [`#7890`](https://github.com/huggingface/datasets/pull/7890).
## Context
In [`#7890`](https://github.com/huggingface/datasets/pull/7890) it was introduced an automatic creation of the `TMPDIR` directory in `_TempCacheDir` so that `datasets` does not silently fall back to `/... | {
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https://api.github.com/repos/huggingface/datasets/issues/7890 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7890/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7890/comments | https://api.github.com/repos/huggingface/datasets/issues/7890/events | https://github.com/huggingface/datasets/pull/7890 | 3,677,077,051 | PR_kwDODunzps62JMyH | 7,890 | Fix: Auto-create TMPDIR directory when it doesn't exist (Issue #7877) | {
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"> Thank you for implementing this, @ada-ggf25\r\n> \r\n> I see there are a few more uses of `tempfile` in `datasets` besides the one treated here - should they be treated in the same way as well?\r\n\r\nI had a look through the other tempfile call sites:\r\n- In `arrow_dataset.py` the code always pass an explicit ... | 2025-11-29T20:35:24Z | 2025-12-02T12:24:17Z | 2025-12-02T12:24:17Z | null | CONTRIBUTOR | [] | null | null | null | null | # Fix: Auto-create TMPDIR directory when it doesn't exist
Fixes #7877
## Description
This PR fixes issue #7877 by implementing automatic creation of the `TMPDIR` directory when it is set but doesn't exist. Previously, `tempfile.mkdtemp()` would silently ignore `TMPDIR` and fall back to `/tmp` if the specified direct... | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7889). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"Maybe `push_to_hub()` can retry on error 400 when committing to the Hub instead ? This ... | 2025-11-29T17:13:18Z | 2025-12-19T16:46:01Z | null | null | CONTRIBUTOR | [] | null | null | null | null | ## Problem
`test_push_dataset_dict_to_hub_overwrite_files` intermittently fails with:
```
BadRequestError: LFS pointer pointed to a file that does not exist
```
This has been causing the `deps-latest` integration tests to fail on main (visible in recent CI runs). I ran into this while working on the BIDS loader PR an... | null | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7888). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-11-29T06:19:30Z | 2025-12-08T12:06:57Z | 2025-12-08T12:06:57Z | null | CONTRIBUTOR | [] | null | null | null | null | Fixes #7883
This PR adds @overload decorators to load_dataset() to help type checkers like Pylance and mypy correctly infer the return type based on the split and streaming parameters.
Changes:
- Added typing imports (Literal, overload) to load.py
- Added 4 @overload signatures that map argument combinations to... | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7887). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-11-29T01:40:27Z | 2025-12-19T14:14:35Z | 2025-12-19T14:14:35Z | null | CONTRIBUTOR | [] | null | null | null | null | ## Summary
- **Single-line fix**: Change `dataobj=nifti_image.get_fdata()` → `dataobj=nifti_image.dataobj`
- Preserves nibabel's `ArrayProxy` for true lazy loading instead of eagerly loading entire NIfTI files into memory
- Improves error handling: corrupted files now fail at access time with clear context instead of s... | {
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https://api.github.com/repos/huggingface/datasets/issues/7886 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7886/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7886/comments | https://api.github.com/repos/huggingface/datasets/issues/7886/events | https://github.com/huggingface/datasets/pull/7886 | 3,676,185,151 | PR_kwDODunzps62Gh1c | 7,886 | feat(bids): Add BIDS dataset loader for neuroimaging data | {
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Adds native BIDS (Brain Imaging Data Structure) dataset loading support using PyBIDS, enabling `load_dataset('bids', data_dir='/path/to/bids')` workflow for neuroimaging researchers.
**Contributes to #7804** (Support scientific data formats) - BIDS is a widely-used standard for organizing neuroimaging data... | {
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https://api.github.com/repos/huggingface/datasets/issues/7885 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7885/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7885/comments | https://api.github.com/repos/huggingface/datasets/issues/7885/events | https://github.com/huggingface/datasets/pull/7885 | 3,675,116,624 | PR_kwDODunzps62DBlN | 7,885 | Add visualization paragraph to nifti readme | {
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https://api.github.com/repos/huggingface/datasets/issues/7884 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7884/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7884/comments | https://api.github.com/repos/huggingface/datasets/issues/7884/events | https://github.com/huggingface/datasets/pull/7884 | 3,672,811,099 | PR_kwDODunzps617Uk6 | 7,884 | Fix 7846: add_column and add_item erroneously(?) require new_fingerprint parameter | {
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"@lhoestq can you help review this pull request?",
"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7884). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-11-27T19:32:10Z | 2025-12-04T16:09:51Z | 2025-12-04T16:09:51Z | null | CONTRIBUTOR | [] | null | null | null | null | Summary of the change:
Made new_fingerprint optional (Optional[str] = None) in Dataset.add_column and Dataset.add_item
Added a simple test to verify both methods work without providing a fingerprint
Why this change is safe:
The Dataset constructor already handles fingerprint=None by generating a new fingerpri... | {
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https://api.github.com/repos/huggingface/datasets/issues/7883 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7883/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7883/comments | https://api.github.com/repos/huggingface/datasets/issues/7883/events | https://github.com/huggingface/datasets/issues/7883 | 3,668,182,561 | I_kwDODunzps7apAYh | 7,883 | Data.to_csv() cannot be recognized by pylance | {
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"blocked_by": 0,
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"blocking": 0,
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} | ### Describe the bug
Hi, everyone ! I am a beginner with datasets.
I am testing reading multiple CSV files from a zip archive. The result of reading the dataset shows success, and it can ultimately be correctly saved to CSV.
Intermediate results:
```
Generating train split: 62973 examples [00:00, 175939.01 examples/... | {
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https://api.github.com/repos/huggingface/datasets/issues/7882 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7882/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7882/comments | https://api.github.com/repos/huggingface/datasets/issues/7882/events | https://github.com/huggingface/datasets/issues/7882 | 3,667,664,527 | I_kwDODunzps7anB6P | 7,882 | Inconsistent loading of LFS-hosted files in epfml/FineWeb-HQ dataset | {
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"we are investigating the issue, I'll post updates here",
"It should be all good now, sorry for the inconvenience.\n\nWe found an error that happened during the migration of this repository from Git LFS to Xet and fixed the issue"
] | 2025-11-26T14:06:02Z | 2025-12-19T14:09:45Z | null | null | NONE | [] | null | null | {
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} | ### Describe the bug
Some files in the `epfml/FineWeb-HQ` dataset fail to load via the Hugging Face `datasets` library.
- xet-hosted files load fine
- LFS-hosted files sometimes fail
Example:
- Fails: https://huggingface.co/datasets/epfml/FineWeb-HQ/blob/main/data/CC-MAIN-2024-26/000_00003.parquet
- Works: ht... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7881 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7881/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7881/comments | https://api.github.com/repos/huggingface/datasets/issues/7881/events | https://github.com/huggingface/datasets/pull/7881 | 3,667,642,524 | PR_kwDODunzps61qI8F | 7,881 | Fix spurious label column when directories match split names | {
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https://api.github.com/repos/huggingface/datasets/issues/7880 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7880/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7880/comments | https://api.github.com/repos/huggingface/datasets/issues/7880/events | https://github.com/huggingface/datasets/issues/7880 | 3,667,561,864 | I_kwDODunzps7amo2I | 7,880 | Spurious label column created when audiofolder/imagefolder directories match split names | {
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} | ## Describe the bug
When using `audiofolder` or `imagefolder` with directories for **splits** (train/test) rather than class labels, a spurious `label` column is incorrectly created.
**Example:** https://huggingface.co/datasets/datasets-examples/doc-audio-4
```
from datasets import load_dataset
ds = load_dataset("dat... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7879 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7879/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7879/comments | https://api.github.com/repos/huggingface/datasets/issues/7879/events | https://github.com/huggingface/datasets/issues/7879 | 3,657,249,446 | I_kwDODunzps7Z_TKm | 7,879 | python core dump when downloading dataset | {
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"Hi @hansewetz I'm curious, for me it works just fine. Are you still observing the issue?",
"Yup ... still the same issue.\nHowever, after adding a ```sleep(1)``` call after the ``` for``` loop by accident during debugging, the program terminates properly (not a good solution though ... :-) ).\nAre there some thr... | 2025-11-24T06:22:53Z | 2025-11-25T20:45:55Z | null | null | NONE | [] | null | null | {
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} | ### Describe the bug
When downloading a dataset in streamed mode and exiting the program before the download completes, the python program core dumps when exiting:
```
terminate called without an active exception
Aborted (core dumped)
```
Tested with python 3.12.3, python 3.9.21
### Steps to reproduce the bug
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"@CloseChoice thanks for your work on this. As you mentioned, the prime developers for Papaya have moved on, so it is in maintenance mode, albeit it is mature and may fill all your requirements. \r\n\r\nPapaya does reflect the era of its creation, so it uses WebGL1 (which only supports 2D textures) for display and ... | 2025-11-21T22:19:56Z | 2025-11-27T20:37:04Z | 2025-11-27T18:00:19Z | null | CONTRIBUTOR | [] | null | null | null | null | I was contacted by Chris Rorden whose group is developing NiiVue (see https://github.com/niivue/niivue), which leverages WebGL2 (in contrast to Papaya which is WebGL1 based). He also offered support in the implementation, which might come in handy in case of any questions later on (see DICOM implemenation). I completel... | {
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"Hi! Just created a Pull Request (#7890) to try to fix this using your suggestions. I hope it helps!"
] | 2025-11-21T19:51:48Z | 2025-12-16T14:20:48Z | 2025-12-16T14:20:48Z | null | CONTRIBUTOR | [] | null | null | {
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However, the `tempfile` facility that `datasets` and `pyarrow` use ... | {
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https://api.github.com/repos/huggingface/datasets/issues/7876 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7876/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7876/comments | https://api.github.com/repos/huggingface/datasets/issues/7876/events | https://github.com/huggingface/datasets/pull/7876 | 3,652,170,832 | PR_kwDODunzps602lac | 7,876 | test: add verification for HuggingFaceM4/InterleavedWebDocuments | {
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- Gracefully skips if the dataset is not yet available on the Hub
- Checks basic loading and structure once it becomes available
Closes #7394
First-time contributor to `datasets` — really excited about this! Happy to make any ad... | null | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7874). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"I tested in Colab and it works perfectly :) now I want to add `_repr_html_` everywhere ... | 2025-11-19T21:56:56Z | 2025-11-21T12:41:43Z | 2025-11-21T12:31:18Z | null | CONTRIBUTOR | [] | null | null | null | null | closes #7870
leverage Papaya to visualize nifti images. For this I created a Wrapper class for `nibabel.nifti1.Nifti1Image` that provides the same interface but exposes an additional `_repr_html_` method, which is needed to visualize the image in jupyter (didn't test in colab, but that should work equivalently).
... | {
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"\r\n@lhoestq would like to hear from you!\r\n",
"Hi @lhoestq can you please review this? Thanks!",
"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7873). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the l... | 2025-11-19T18:43:47Z | 2026-02-05T17:54:01Z | null | null | CONTRIBUTOR | [] | null | null | null | null | Updated chunk handling to cast to expected schema when features are provided or to unify schemas when not. This ensures proper schema alignment for the yielded batches.
fixes #7872
This PR fixes a bug where `IterableDataset` created from a generator with explicit `features` parameter would fail during arrow oper... | null | {
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"Created A PR!",
"Another test script that can be used to test the behavior - \n\n```\nimport datasets\nfrom datasets import features\n\ndef test_crash():\n common_features = features.Features({\n \"a\": features.Value(\"int64\"),\n \"b\": features.List({\"c\": features.Value(\"int64\")}),\n }... | 2025-11-19T17:12:59Z | 2025-11-19T18:52:14Z | null | null | NONE | [] | null | null | {
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} | ### Describe the bug
`IterableDataset` created from generator with explicit `features=` parameter seems to ignore provided features description for certain operations, e.g. `.to_pandas(...)` when data coming from the generator has missing values.
### Steps to reproduce the bug
```python
import datasets
from datasets... | null | {
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"the dataset repo: `https://huggingface.co/datasets/nvidia/PhysicalAI-Robotics-GR00T-X-Embodiment-Sim`",
"Hi @yanan1116,\n\nThanks for the detailed report! However, this issue was filed in the wrong repository. This is a `huggingface_hub` issue, not a `datasets` issue.\n\nLooking at your traceback, you're using t... | 2025-11-19T16:52:24Z | 2025-11-30T13:38:32Z | 2025-11-30T13:38:32Z | null | NONE | [] | null | null | {
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} | ### Describe the bug
full error message:
```
Traceback (most recent call last):
File "/home/yanan/miniconda3/bin/hf", line 7, in <module>
sys.exit(main())
~~~~^^
File "/home/yanan/miniconda3/lib/python3.13/site-packages/huggingface_hub/cli/hf.py", line 56, in main
app()
~~~^^
File "/ho... | {
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"It would be amazing to be able to show the Papaya UI in google colab / jupyter notebook. IIRC both allow serving javascript via nbextensions that we can surely use in HTML() objects.\n\nAlternatively we could also start with a simple approach and dump the medical image data as a video file that goes through the sl... | 2025-11-19T11:05:39Z | 2025-11-21T12:31:19Z | 2025-11-21T12:31:19Z | null | CONTRIBUTOR | [] | null | null | {
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I checked the possibilities to visualize the nifti (and potentially dicom), and here's what I found:
- https://github.com/aces/brainbrowser, AGPL3 license, last commit 3 months ago, latest (github) release from 2017. It's available on jsdelivr... | {
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"Hi @hitszxs,\n This is indeed by design,\n\nThe `datasets` library is built on top of [Apache Arrow](https://arrow.apache.org/), which uses a **columnar storage format** with strict schema requirements. When you try to concatenate/merge datasets, the library checks if features can be aligned using the [`_check_if_... | 2025-11-18T08:33:04Z | 2026-03-09T15:57:59Z | 2026-03-09T15:57:58Z | null | NONE | [] | null | null | {
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} | Hi, I have a question about SFT (Supervised Fine-tuning) for an agent model.
Suppose I want to fine-tune an agent model that may receive two different tools: tool1 and tool2. These tools have different parameters and types in their schema definitions.
When I try to merge datasets containing different tool definitions... | {
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https://api.github.com/repos/huggingface/datasets/issues/7868 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7868/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7868/comments | https://api.github.com/repos/huggingface/datasets/issues/7868/events | https://github.com/huggingface/datasets/issues/7868 | 3,632,429,308 | I_kwDODunzps7Ygnj8 | 7,868 | Data duplication with `split_dataset_by_node` and `interleaved_dataset` | {
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"Hi @ValMystletainn ,\nCan I be assigned this issue?",
"> split_dataset_by_node\n\nHello, I have some questions about your intended use: (1) It seems unnecessary to use interleaving for a single dataset. (2) For multiple datasets, it seems possible to interleave first and then split by node?",
"Hi ! I think int... | 2025-11-17T09:15:24Z | 2026-02-04T18:55:36Z | 2026-02-04T18:55:36Z | null | NONE | [] | null | null | {
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Data duplication in different rank, when process a iterabledataset with first `split_dataset_by_node` and then `interleaved_dataset`
### Steps to reproduce the bug
I have provide a minimum scripts
```python
import os
from datasets import interleave_datasets, load_dataset
from datasets.distribu... | {
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https://api.github.com/repos/huggingface/datasets/issues/7867 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7867/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7867/comments | https://api.github.com/repos/huggingface/datasets/issues/7867/events | https://github.com/huggingface/datasets/issues/7867 | 3,620,931,722 | I_kwDODunzps7X0wiK | 7,867 | NonMatchingSplitsSizesError when loading partial dataset files | {
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"While using verification_mode='no_checks' parameter in load_dataset() can bypass this validation, this solution is not intuitive or convenient for most users, especially those who are not familiar with all the parameters of the load_dataset() function.\n\n```python\nbook_corpus_ds = load_dataset(\n \"SaylorTwif... | 2025-11-13T12:03:23Z | 2025-11-16T15:39:23Z | null | null | NONE | [] | null | null | {
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} | ### Describe the bug
When loading only a subset of dataset files while the dataset's README.md contains split metadata, the system throws a NonMatchingSplitsSizesError . This prevents users from loading partial datasets for quick validation in cases of poor network conditions or very large datasets.
### Steps to repr... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7866 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7866/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7866/comments | https://api.github.com/repos/huggingface/datasets/issues/7866/events | https://github.com/huggingface/datasets/pull/7866 | 3,620,436,248 | PR_kwDODunzps6zL7Sz | 7,866 | docs: add Python version requirement note to installation section | {
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https://api.github.com/repos/huggingface/datasets/issues/7865 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7865/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7865/comments | https://api.github.com/repos/huggingface/datasets/issues/7865/events | https://github.com/huggingface/datasets/pull/7865 | 3,620,116,195 | PR_kwDODunzps6zK2H_ | 7,865 | [FEAT] MIDI feature support | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7865). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-11-13T08:31:51Z | 2025-11-14T13:58:52Z | null | null | NONE | [] | null | null | null | null | This PR adds a new `Midi` feature for reading and importing MIDI files into the datasets.
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https://api.github.com/repos/huggingface/datasets/issues/7864 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7864/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7864/comments | https://api.github.com/repos/huggingface/datasets/issues/7864/events | https://github.com/huggingface/datasets/issues/7864 | 3,619,137,823 | I_kwDODunzps7Xt6kf | 7,864 | add_column and add_item erroneously(?) require new_fingerprint parameter | {
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"Take this with a grain of salt, this is just my personal understanding:\nWhile you technically can overwrite the new_fingerprint with a string, e.g.\n```python\nt = d.add_column(\"new_column\", col_value, new_fingerprint=\"dummy_fp\")\nassert t._fingerprint == \"dummy_fp\" # this is true and will pass\n```\nthis ... | 2025-11-13T02:56:49Z | 2025-12-07T14:41:40Z | null | null | NONE | [] | null | null | {
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} | ### Describe the bug
Contradicting their documentation (which doesn't mention the parameter at all), both Dataset.add_column and Dataset.add_item require a new_fingerprint string. This parameter is passed directly to the dataset constructor, which has the fingerprint parameter listed as optional; is there any reason i... | null | {
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"Kudos!",
"So cool ! Would love to see support for lance :)",
"@lhoestq thanks for your support! Any suggestions across `datasets` or `huggingface_hub` projects to make this happen?\n\nI just noticed this blog post: https://huggingface.co/blog/streaming-datasets\n\nDo you know if `hfFileSystem` from `huggingfac... | 2025-11-13T00:51:07Z | 2026-04-23T12:29:09Z | null | null | NONE | [] | null | null | {
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Huggingface datasets has great support for large tabular datasets in parquet with large partitions. I would love to see two things in the future:
- equivalent support for `lance`, `vortex`, `iceberg`, `zarr` (in that order) in a way that I can stream them using the datasets library
- more fine-gr... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7862 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7862/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7862/comments | https://api.github.com/repos/huggingface/datasets/issues/7862/events | https://github.com/huggingface/datasets/pull/7862 | 3,617,947,090 | PR_kwDODunzps6zDjEj | 7,862 | Add flatten_indices option to save_to_disk method | {
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"as said by @KCKawalkar used below script to test - \r\n\r\nBEFORE PATCH - \r\nTEST.PY:\r\n```\r\nfrom datasets import Dataset\r\nimport time\r\n\r\ndataset = Dataset.from_dict({'text': [f'sample {i}' for i in range(100000)]})\r\n\r\n# Baseline save (no indices)\r\nstart = time.time()\r\ndataset.save_to_disk('basel... | 2025-11-12T19:38:51Z | 2025-11-12T19:50:20Z | null | null | CONTRIBUTOR | [] | null | null | null | null | Added flatten_indices parameter to control index flattening during dataset saving.
Solves #7861
This PR introduces a new optional argument, flatten_indices, to the save_to_disk methods in both Dataset and DatasetDict.
The change allows users to skip the expensive index-flattening step when saving datasets that ... | null | {
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The `save_to_disk()` method unconditionally calls `flatten_indices()` when `_indices` is not None, causing severe performance degradation for datasets processed with filtering, shuffling, or multiprocessed mapping operations.
**Root cause**: This line rebuilds the entire dataset unnecessarily:
`... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7860 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7860/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7860/comments | https://api.github.com/repos/huggingface/datasets/issues/7860/events | https://github.com/huggingface/datasets/pull/7860 | 3,610,706,034 | PR_kwDODunzps6yrHQN | 7,860 | Support loading local arrow datasets via load_dataset | {
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#7018 | null | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7859). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-11-10T15:34:46Z | 2025-11-10T17:11:07Z | 2025-11-10T17:11:05Z | null | MEMBER | [] | null | null | null | null | would be cool to automate finding those broken links as i think there might be many of them @lhoestq @albertvillanova | {
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https://api.github.com/repos/huggingface/datasets/issues/7858 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7858/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7858/comments | https://api.github.com/repos/huggingface/datasets/issues/7858/events | https://github.com/huggingface/datasets/pull/7858 | 3,605,471,548 | PR_kwDODunzps6yZq4r | 7,858 | Support downloading specific splits in `load_dataset` | {
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"@CloseChoice This looks great! You're absolutely right about the missing comparison - that's a critical bug I missed. ",
"@lhoestq just resolved the conflicts inflicted by the latest changes. Thought it might be good giving this a shot now before more changes mess with this PR.",
"The docs for this PR live [he... | 2025-11-09T20:44:00Z | 2025-12-29T15:49:20Z | null | null | CONTRIBUTOR | [] | null | null | null | null | This is PR builds on top of #7706 to revive the unfinished #6832 but isn't just cleaning up things, here are some important changes:
- `download_mode="FORCE_REDOWNLOAD"` is interpreted as always creating a clean slate, that means that even if we already did:
```python
load_dataset("<name>")
load_dataset("<name>",... | null | {
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https://api.github.com/repos/huggingface/datasets/issues/7856 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7856/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7856/comments | https://api.github.com/repos/huggingface/datasets/issues/7856/events | https://github.com/huggingface/datasets/issues/7856 | 3,603,729,142 | I_kwDODunzps7WzIr2 | 7,856 | Missing transcript column when loading a local dataset with "audiofolder" | {
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"First bad commit 5c8869f8c36dbc8c8d423030b7b7c4fd64f8c729\n\nEDIT: This is not a bug or a regression. It was a breaking change introduced in the commit I mentioned and was also documented in there. The docs state how to handle this now, see https://huggingface.co/docs/datasets/main/en/audio_load#audiofolder-with-m... | 2025-11-08T16:27:58Z | 2025-11-09T12:13:38Z | 2025-11-09T12:13:38Z | null | NONE | [] | null | null | {
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} | ### Describe the bug
My local dataset is not properly loaded when using `load_dataset("audiofolder", data_dir="my_dataset")` with a `jsonl` metadata file.
Only the `audio` column is read while the `transcript` column is not.
The last tested `datasets` version where the behavior was still correct is 2.18.0.
### Steps... | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7855). 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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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7854). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"Making this work with multiple workers could create a lot of communication for not a lo... | 2025-11-06T17:14:18Z | 2025-11-10T14:57:44Z | null | null | MEMBER | [] | null | null | null | null | this works:
```python
import torch.distributed as dist
from datasets import IterableDataset
from datasets.distributed import split_dataset_by_node
from collections import Counter
def g(shards):
for shard in shards:
# shards don't have the same length
num_examples = 3 + shard
f... | null | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7853). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update."
] | 2025-11-06T15:07:58Z | 2025-11-06T17:04:57Z | 2025-11-06T16:20:36Z | null | CONTRIBUTOR | [] | null | null | null | null | Fixes #7852
Adds `embed_storage` function and allows gzipped files to be loaded correctly from local storage. | {
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https://api.github.com/repos/huggingface/datasets/issues/7852 | https://api.github.com/repos/huggingface/datasets | https://api.github.com/repos/huggingface/datasets/issues/7852/labels{/name} | https://api.github.com/repos/huggingface/datasets/issues/7852/comments | https://api.github.com/repos/huggingface/datasets/issues/7852/events | https://github.com/huggingface/datasets/issues/7852 | 3,595,450,602 | I_kwDODunzps7WTjjq | 7,852 | Problems with NifTI | {
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"> 2. when uploading via the niftifolder feature, the resulting parquet only contains relative paths to the nifti files:\n\nwhat did you use to upload the dataset ? iirc push_to_hub() does upload the bytes as well, but to_parquet() doesn't",
"> > 2. when uploading via the niftifolder feature, the resulting parque... | 2025-11-06T11:46:33Z | 2025-11-06T16:20:38Z | 2025-11-06T16:20:38Z | null | CONTRIBUTOR | [] | null | null | {
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} | ### Describe the bug
There are currently 2 problems with the new NifTI feature:
1. dealing with zipped files, this is mentioned and explained [here](https://github.com/huggingface/datasets/pull/7815#issuecomment-3496199503)
2. when uploading via the `niftifolder` feature, the resulting parquet only contains relative p... | {
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"The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_7851). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.",
"A few comments:\r\n\r\n- Have you tried using this with longer sequences? @UriNeri deve... | 2025-11-05T18:11:12Z | 2025-11-15T00:51:53Z | null | null | NONE | [] | null | null | null | null | This PR adds support for FASTA files conversion to Parquet. | null | {
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As mentioned in the issue `mode` has been copy-pasted but isn't used in these files. | {
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