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2

Failed to load dataset

#2
by hakuturu583 - opened
Discussion
hakuturu583
•
edited Nov 7, 2025

I attempted to load the dataset using the following script, but it resulted in an error.
I suspect there might be an issue with the implementation around LeRobotDataset or perhaps a problem with the structure of the L2D-v3 dataset. What do you think?

from lerobot.datasets.streaming_dataset import StreamingLeRobotDataset

# Streams directly from the Hugging Face Hub, without downloading the dataset into disk or loading into memory
repo_id = "yaak-ai/L2D-v3"
dataset = StreamingLeRobotDataset(repo_id)

stats.json: 7.95kB [00:00, 9.86MB/s]                                                             | 0/4 [00:00<?, ?it/s]
info.json: 6.41kB [00:00, 14.5MB/s]
meta/tasks.parquet: 100%|█████████████████████████████████████████████████████████| 2.37k/2.37k [00:01<00:00, 2.05kB/s]
meta/episodes/chunk-000/file-000.parquet: 100%|███████████████████████████████████| 9.48M/9.48M [00:01<00:00, 7.08MB/s]
Fetching 4 files: 100%|██████████████████████████████████████████████████████████████████| 4/4 [00:01<00:00,  2.23it/s]
Traceback (most recent call last):
  File "/home/masaya/workspace/nanogaia/nanogaia/prepare_dataset.py", line 7, in <module>
    dataset = StreamingLeRobotDataset(repo_id)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/masaya/workspace/nanogaia/.venv/lib/python3.12/site-packages/lerobot/datasets/streaming_dataset.py", line 152, in __init__
    self.hf_dataset: datasets.IterableDataset = load_dataset(
                                                ^^^^^^^^^^^^^
  File "/home/masaya/workspace/nanogaia/.venv/lib/python3.12/site-packages/datasets/load.py", line 1392, in load_dataset
    builder_instance = load_dataset_builder(
                       ^^^^^^^^^^^^^^^^^^^^^
  File "/home/masaya/workspace/nanogaia/.venv/lib/python3.12/site-packages/datasets/load.py", line 1132, in load_dataset_builder
    dataset_module = dataset_module_factory(
                     ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/masaya/workspace/nanogaia/.venv/lib/python3.12/site-packages/datasets/load.py", line 1025, in dataset_module_factory
    raise e1 from None
  File "/home/masaya/workspace/nanogaia/.venv/lib/python3.12/site-packages/datasets/load.py", line 1004, in dataset_module_factory
    ).get_module()
      ^^^^^^^^^^^^
  File "/home/masaya/workspace/nanogaia/.venv/lib/python3.12/site-packages/datasets/load.py", line 638, in get_module
    module_name, default_builder_kwargs = infer_module_for_data_files(
                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/masaya/workspace/nanogaia/.venv/lib/python3.12/site-packages/datasets/load.py", line 300, in infer_module_for_data_files
    raise DataFilesNotFoundError("No (supported) data files found" + (f" in {path}" if path else ""))
datasets.exceptions.DataFilesNotFoundError: No (supported) data files found in yaak-ai/L2D-v3
hakuturu583

Version of the LeRobot is 0.4.0

[[package]]
name = "lerobot"
version = "0.4.0"
source = { registry = "https://pypi.org/simple" }
hakuturu583

This code comes from this example.
ichrnkv

Same issue here
sandhawalia
 Yaak org

Hi there,

Thanks for your interest in L2D. Please use yaak-ai/L2D instead its is compatible with LeRobot 0.4.x 

>>> repo_id = "yaak-ai/L2D"
>>> dataset = StreamingLeRobotDataset(repo_id)
info.json: 4.76kB [00:00, 15.6MB/s]                                                                                              | 0/4 [00:00<?, ?it/s]
stats.json: 3.57kB [00:00, 15.0MB/s]                                                                                       | 0.00/1.49k [00:00<?, ?B/s]
meta/tasks.parquet: 100%|█████████████████████████████████████████████████████████████████████████████████████████| 1.49k/1.49k [00:01<00:00, 1.03kB/s]
meta/episodes/chunk-000/file-000.parquet: 100%|███████████████████████████████████████████████████████████████████| 78.0M/78.0M [00:04<00:00, 17.4MB/s]
Fetching 4 files: 100%|██████████████████████████████████████████████████████████████████████████████████████████████████| 4/4 [00:04<00:00,  1.24s/it]
README.md: 6.33kB [00:00, 29.1MB/s]rquet: 100%|███████████████████████████████████████████████████████████████████| 78.0M/78.0M [00:04<00:00, 19.9MB/s]
Resolving data files: 100%|████████████████████████████████████████████████████████████████████████████████████████████| 17/17 [00:05<00:00,  3.23it/s]
Resolving data files: 100%|████████████████████████████████████████████████████████████████████████████████████████| 17/17 [00:00<00:00, 160592.72it/s]

>>> dataset.meta
LeRobotDatasetMetadata({
    Repository ID: 'yaak-ai/L2D',
    Total episodes: '100000',
    Total frames: '19042712',
    Features: '['observation.state.vehicle', 'observation.state.lanes', 'observation.state.road', 'observation.state.surface', 'observation.state.max_speed', 'observation.state.precipitation', 'observation.state.conditions', 'observation.state.lighting', 'observation.state.waypoints', 'observation.state.timestamp', 'task.policy', 'task.instructions', 'action.continuous', 'action.discrete', 'timestamp', 'frame_index', 'episode_index', 'index', 'task_index', 'observation.images.left_forward', 'observation.images.front_left', 'observation.images.right_forward', 'observation.images.left_backward', 'observation.images.rear', 'observation.images.right_backward', 'observation.images.map']',
})',
hakuturu583

Thanks a lot!

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