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The dataset generation failed
Error code:   DatasetGenerationError
Exception:    ArrowNotImplementedError
Message:      Cannot write struct type 'rename_map' with no child field to Parquet. Consider adding a dummy child field.
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1887, in _prepare_split_single
                  writer.write_table(table)
                File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 672, in write_table
                  self._build_writer(inferred_schema=pa_table.schema)
                File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 713, in _build_writer
                  self.pa_writer = pq.ParquetWriter(
                                   ^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/pyarrow/parquet/core.py", line 1070, in __init__
                  self.writer = _parquet.ParquetWriter(
                                ^^^^^^^^^^^^^^^^^^^^^^^
                File "pyarrow/_parquet.pyx", line 2363, in pyarrow._parquet.ParquetWriter.__cinit__
                File "pyarrow/error.pxi", line 155, in pyarrow.lib.pyarrow_internal_check_status
                File "pyarrow/error.pxi", line 92, in pyarrow.lib.check_status
              pyarrow.lib.ArrowNotImplementedError: Cannot write struct type 'rename_map' with no child field to Parquet. Consider adding a dummy child field.
              
              During handling of the above exception, another exception occurred:
              
              Traceback (most recent call last):
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1908, in _prepare_split_single
                  num_examples, num_bytes = writer.finalize()
                                            ^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 687, in finalize
                  self._build_writer(self.schema)
                File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 713, in _build_writer
                  self.pa_writer = pq.ParquetWriter(
                                   ^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/pyarrow/parquet/core.py", line 1070, in __init__
                  self.writer = _parquet.ParquetWriter(
                                ^^^^^^^^^^^^^^^^^^^^^^^
                File "pyarrow/_parquet.pyx", line 2363, in pyarrow._parquet.ParquetWriter.__cinit__
                File "pyarrow/error.pxi", line 155, in pyarrow.lib.pyarrow_internal_check_status
                File "pyarrow/error.pxi", line 92, in pyarrow.lib.check_status
              pyarrow.lib.ArrowNotImplementedError: Cannot write struct type 'rename_map' with no child field to Parquet. Consider adding a dummy child field.
              
              The above exception was the direct cause of the following exception:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1347, in compute_config_parquet_and_info_response
                  parquet_operations = convert_to_parquet(builder)
                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 980, in convert_to_parquet
                  builder.download_and_prepare(
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 884, in download_and_prepare
                  self._download_and_prepare(
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 947, in _download_and_prepare
                  self._prepare_split(split_generator, **prepare_split_kwargs)
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1736, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1919, in _prepare_split_single
                  raise DatasetGenerationError("An error occurred while generating the dataset") from e
              datasets.exceptions.DatasetGenerationError: An error occurred while generating the dataset

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dataset
dict
env
null
policy
dict
output_dir
string
job_name
string
resume
bool
seed
int64
num_workers
int64
batch_size
int64
steps
int64
eval_freq
int64
log_freq
int64
tolerance_s
float64
save_checkpoint
bool
save_freq
int64
use_policy_training_preset
bool
optimizer
dict
scheduler
dict
eval
dict
wandb
dict
peft
null
use_rabc
bool
rabc_progress_path
null
rabc_kappa
float64
rabc_epsilon
float64
rabc_head_mode
string
rename_map
dict
checkpoint_path
null
{ "repo_id": "local/dataset", "root": null, "episodes": null, "image_transforms": { "enable": false, "max_num_transforms": 3, "random_order": false, "tfs": { "brightness": { "weight": 1, "type": "ColorJitter", "kwargs": { "brightness": [ 0.8, 1.2 ] } }, "contrast": { "weight": 1, "type": "ColorJitter", "kwargs": { "contrast": [ 0.8, 1.2 ] } }, "saturation": { "weight": 1, "type": "ColorJitter", "kwargs": { "saturation": [ 0.5, 1.5 ] } }, "hue": { "weight": 1, "type": "ColorJitter", "kwargs": { "hue": [ -0.05, 0.05 ] } }, "sharpness": { "weight": 1, "type": "SharpnessJitter", "kwargs": { "sharpness": [ 0.5, 1.5 ] } }, "affine": { "weight": 1, "type": "RandomAffine", "kwargs": { "degrees": [ -5, 5 ], "translate": [ 0.05, 0.05 ] } } } }, "revision": null, "use_imagenet_stats": true, "video_backend": "pyav", "streaming": false }
null
{ "type": "smolvla", "n_obs_steps": 1, "input_features": { "observation.state": { "type": "STATE", "shape": [ 6 ] }, "observation.images.front": { "type": "VISUAL", "shape": [ 3, 1080, 1920 ] }, "observation.images.side": { "type": "VISUAL", "shape": [ 3, 720, 1280 ] } }, "output_features": { "action": { "type": "ACTION", "shape": [ 6 ] } }, "device": "cuda", "use_amp": false, "use_peft": false, "push_to_hub": false, "repo_id": "user/smolvla-local-test", "private": null, "tags": null, "license": null, "pretrained_path": null, "chunk_size": 50, "n_action_steps": 50, "normalization_mapping": { "VISUAL": "IDENTITY", "STATE": "MEAN_STD", "ACTION": "MEAN_STD" }, "max_state_dim": 32, "max_action_dim": 32, "resize_imgs_with_padding": [ 512, 512 ], "empty_cameras": 0, "adapt_to_pi_aloha": false, "use_delta_joint_actions_aloha": false, "tokenizer_max_length": 48, "num_steps": 10, "use_cache": true, "freeze_vision_encoder": true, "train_expert_only": true, "train_state_proj": true, "optimizer_lr": 0.0001, "optimizer_betas": [ 0.9, 0.95 ], "optimizer_eps": 1e-8, "optimizer_weight_decay": 1e-10, "optimizer_grad_clip_norm": 10, "scheduler_warmup_steps": 1000, "scheduler_decay_steps": 30000, "scheduler_decay_lr": 0.0000025, "vlm_model_name": "HuggingFaceTB/SmolVLM2-500M-Video-Instruct", "load_vlm_weights": false, "add_image_special_tokens": false, "attention_mode": "cross_attn", "prefix_length": -1, "pad_language_to": "longest", "num_expert_layers": -1, "num_vlm_layers": 16, "self_attn_every_n_layers": 2, "expert_width_multiplier": 0.75, "min_period": 0.004, "max_period": 4, "rtc_config": null }
outputs/train/2026-02-01/08-28-00_smolvla
smolvla
false
1,000
4
8
20,000
20,000
200
0.0001
true
20,000
true
{ "type": "adamw", "lr": 0.0001, "weight_decay": 1e-10, "grad_clip_norm": 10, "betas": [ 0.9, 0.95 ], "eps": 1e-8 }
{ "type": "cosine_decay_with_warmup", "num_warmup_steps": 1000, "num_decay_steps": 30000, "peak_lr": 0.0001, "decay_lr": 0.0000025 }
{ "n_episodes": 50, "batch_size": 50, "use_async_envs": false }
{ "enable": false, "disable_artifact": false, "project": "lerobot", "entity": null, "notes": null, "run_id": null, "mode": null }
null
false
null
0.01
0.000001
sparse
{}
null

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