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Cannot load the dataset split (in streaming mode) to extract the first rows.
Error code:   StreamingRowsError
Exception:    CastError
Message:      Couldn't cast
B00MCW7G9M: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B00YT6XQSE: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B07SM135LS: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B089CNGZCW: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B004E2Z88O: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B00TX536EK: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B07BJ7ZZL7: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B005G99O2U: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B01MCZP7RF: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B00R6R82HS: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B000LV7P8I: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B00CFGZAT8: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B07PXWYLQX: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B00ABEQ6TY: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B07Y6K1PRB: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B07Y6MRH7G: struct<url: string, title: string>
  child 0, url: string
  chi
...
truct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B09FLBFDQ5: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B07N63JHZP: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B00NRV4B6S: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B082DZY18M: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B002SIW1TU: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B00KW21CC6: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B0C3LDSFB5: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B07WTBH65P: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B003NUIU9M: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B0BHVY33TL: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B09SQGRFFH: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B091JWCSG5: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
B08K7KC4GR: struct<url: string, title: string>
  child 0, url: string
  child 1, title: string
built_at: timestamp[s]
domain: string
dim: int64
embed_model: string
retrieval_text_columns: list<item: string>
  child 0, item: string
rows: int64
batch_size: int64
max_length: int64
to
{'domain': Value('string'), 'retrieval_text_columns': List(Value('string')), 'rows': Value('int64'), 'dim': Value('int64'), 'embed_model': Value('string'), 'max_length': Value('int64'), 'batch_size': Value('int64'), 'built_at': Value('timestamp[s]')}
because column names don't match
Traceback:    Traceback (most recent call last):
                File "/src/services/worker/src/worker/utils.py", line 147, in get_rows_or_raise
                  return get_rows(
                      dataset=dataset,
                  ...<4 lines>...
                      column_names=column_names,
                  )
                File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
                  return func(*args, **kwargs)
                File "/src/services/worker/src/worker/utils.py", line 127, in get_rows
                  rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
                File "/src/services/worker/src/worker/utils.py", line 483, in safe_iter
                  yield from ds.decode(False) if ds.features else ds
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2840, in __iter__
                  for key, example in ex_iterable:
                                      ^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2373, in __iter__
                  for key, pa_table in self._iter_arrow():
                                       ~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2398, in _iter_arrow
                  for key, pa_table in self.ex_iterable._iter_arrow():
                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
                  for key, pa_table in iterator:
                                       ^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
                  for key, pa_table in self.generate_tables_fn(**gen_kwags):
                                       ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
                  self._cast_table(pa_table, json_field_paths=json_field_paths),
                  ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
                  pa_table = table_cast(pa_table, self.info.features.arrow_schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2378, in table_cast
                  return cast_table_to_schema(table, schema)
                File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2306, in cast_table_to_schema
                  raise CastError(
                  ...<3 lines>...
                  )
              datasets.table.CastError: Couldn't cast
              B00MCW7G9M: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B00YT6XQSE: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B07SM135LS: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B089CNGZCW: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B004E2Z88O: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B00TX536EK: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B07BJ7ZZL7: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B005G99O2U: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B01MCZP7RF: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B00R6R82HS: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B000LV7P8I: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B00CFGZAT8: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B07PXWYLQX: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B00ABEQ6TY: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B07Y6K1PRB: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B07Y6MRH7G: struct<url: string, title: string>
                child 0, url: string
                chi
              ...
              truct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B09FLBFDQ5: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B07N63JHZP: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B00NRV4B6S: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B082DZY18M: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B002SIW1TU: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B00KW21CC6: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B0C3LDSFB5: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B07WTBH65P: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B003NUIU9M: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B0BHVY33TL: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B09SQGRFFH: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B091JWCSG5: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              B08K7KC4GR: struct<url: string, title: string>
                child 0, url: string
                child 1, title: string
              built_at: timestamp[s]
              domain: string
              dim: int64
              embed_model: string
              retrieval_text_columns: list<item: string>
                child 0, item: string
              rows: int64
              batch_size: int64
              max_length: int64
              to
              {'domain': Value('string'), 'retrieval_text_columns': List(Value('string')), 'rows': Value('int64'), 'dim': Value('int64'), 'embed_model': Value('string'), 'max_length': Value('int64'), 'batch_size': Value('int64'), 'built_at': Value('timestamp[s]')}
              because column names don't match

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