The full dataset viewer is not available (click to read why). Only showing a preview of the rows.
The dataset generation failed
Error code: DatasetGenerationError
Exception: ArrowNotImplementedError
Message: Cannot write struct type 'drop_reasons' 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 1821, in _prepare_split_single
num_examples, num_bytes = writer.finalize()
^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 781, in finalize
self.write_rows_on_file()
File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 663, in write_rows_on_file
self._write_table(table)
File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 771, in _write_table
self._build_writer(inferred_schema=pa_table.schema)
File "/usr/local/lib/python3.12/site-packages/datasets/arrow_writer.py", line 812, 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 'drop_reasons' 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 882, in download_and_prepare
self._download_and_prepare(
File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 943, in _download_and_prepare
self._prepare_split(split_generator, **prepare_split_kwargs)
File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1646, 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 1832, in _prepare_split_single
raise DatasetGenerationError("An error occurred while generating the dataset") from e
datasets.exceptions.DatasetGenerationError: An error occurred while generating the datasetNeed help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
generated_at string | kind string | tokenizer_dir string | output_dir string | tokenized_bin string | dtype string | target_tokens int64 | actual_tokens int64 | file_size_bytes int64 | vocab_size int64 | max_token_id int64 | eos_token_id int64 | documents int64 | source_targets dict | source_stats dict | mixing_strategy string | cleaning dict | seed int64 | source_order_preview list | source_switches int64 | truncated_documents int64 | elapsed_sec float64 | passed bool | fail_reasons list |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2026-05-08 16:37:44 UTC | continue_pretrain_tokenized | /data/v2/tokenizer | /data/v2/continue_full | /data/v2/continue_full/tokenized.bin | uint16 | 1,194,000,000 | 1,194,000,000 | 2,388,000,000 | 48,000 | 47,999 | 0 | 1,203,778 | {
"replay": 300000000,
"wikipedia_zh": 394000000,
"cosmopedia_chinese": 500000000
} | {
"replay": {
"target_tokens": 300000000,
"raw_docs_seen": 390470,
"kept_docs": 390470,
"dropped_docs": 0,
"clean_chars": 522475091,
"tokens": 300000000,
"eos_count": 390469,
"samples": [
{
"id": null,
"title": null,
"tokens": 576,
"chars": 847,
... | document_level_lowest_fill_fraction_after_cleaning | {
"replay": "reuse cleaned base raw text; light safety filters",
"wikipedia_zh": "OpenCC t2s + tail-section/list/markup/disambiguation filters",
"cosmopedia_chinese": "OpenCC t2s + list/markdown/template density filters"
} | 42 | [
"replay",
"wikipedia_zh",
"cosmopedia_chinese",
"replay",
"replay",
"replay",
"cosmopedia_chinese",
"replay",
"cosmopedia_chinese",
"replay",
"replay",
"wikipedia_zh",
"cosmopedia_chinese",
"replay",
"replay",
"cosmopedia_chinese",
"replay",
"cosmopedia_chinese",
"replay",
"cos... | 824,032 | 3 | 8,453.146939 | true | [] |