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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
ts: timestamp[s]
price: double
label: string
score: double
data_age_sec: double
frozen_straddle: double
atm_greeks: struct<call: struct<delta: double, gamma: double, vega: double, theta: double, rho: double, iv: doub (... 183 chars omitted)
child 0, call: struct<delta: double, gamma: double, vega: double, theta: double, rho: double, iv: double, oi: int64 (... 31 chars omitted)
child 0, delta: double
child 1, gamma: double
child 2, vega: double
child 3, theta: double
child 4, rho: double
child 5, iv: double
child 6, oi: int64
child 7, volume: int64
child 8, price: double
child 1, put: struct<delta: double, gamma: double, vega: double, theta: double, rho: double, iv: double, oi: int64 (... 31 chars omitted)
child 0, delta: double
child 1, gamma: double
child 2, vega: double
child 3, theta: double
child 4, rho: double
child 5, iv: double
child 6, oi: int64
child 7, volume: int64
child 8, price: double
vol_flow: struct<flow_signal: string, flow_strength: string, flow_bias_pct: double, bull_vol_pct: double, bear (... 253 chars omitted)
child 0, flow_signal: string
child 1, flow_strength: string
child 2, flow_bias_pct: double
child 3, bull_vol_pct: double
child 4, bear_vol_pct: double
child 5, near_bull_vol: int64
child 6, near_bear_vol: int64
child 7, near_total_vol: int64
child 8, top_active_strikes: list<item: struct<s: double, total_vol: int64>>
...
ld 7, oi_imbalance: int64
child 8, pc_oi_ratio: double
child 9, net_delta_vol: double
child 10, vol_imbalance: int64
child 11, pc_vol_ratio: double
child 12, vol_pressure_dir: int64
child 13, vol_pressure_label: string
child 14, call_vol_total: int64
child 15, put_vol_total: int64
child 16, vol_skew: double
child 17, total_oi: int64
child 18, total_volume: int64
level_plus1: double
frozen_ts: int64
datetime_utc: timestamp[s]
level_plus3: double
premiums_frozen: bool
session_iv: double
price_age_sec: double
dte_days: double
level_plus2: double
gex: struct<gex_profile: list<item: struct<s: double, gex: double, c_oi: int64, p_oi: int64, gamma: doubl (... 195 chars omitted)
child 0, gex_profile: list<item: struct<s: double, gex: double, c_oi: int64, p_oi: int64, gamma: double>>
child 0, item: struct<s: double, gex: double, c_oi: int64, p_oi: int64, gamma: double>
child 0, s: double
child 1, gex: double
child 2, c_oi: int64
child 3, p_oi: int64
child 4, gamma: double
child 1, total_gex: double
child 2, flip_strike: double
child 3, positive_gex_zone: list<item: double>
child 0, item: double
child 4, negative_gex_zone: list<item: double>
child 0, item: double
child 5, gamma_walls: list<item: struct<s: double, gex: double>>
child 0, item: struct<s: double, gex: double>
child 0, s: double
child 1, gex: double
child 6, regime: string
straddle_premium: double
to
{'ts': Value('int64'), 'last_data_ts': Value('float64'), 'datetime_utc': Value('timestamp[s]'), 'status': Value('string'), 'future_price': Value('float64'), 'atm_strike': Value('float64'), 'atm_frozen': Value('bool'), 'frozen_strike': Value('float64'), 'frozen_ts': Value('int64'), 'frozen_date_et': Value('timestamp[s]'), 'premiums_frozen': Value('bool'), 'frozen_call_pr': Value('float64'), 'frozen_put_pr': Value('float64'), 'frozen_straddle': Value('float64'), 'premiums_frozen_date_et': Value('string'), 'premiums_frozen_ts': Value('int64'), 'session_straddle': Value('float64'), 'straddle_premium': Value('float64'), 'session_iv': Value('float64'), 'qs_method': Value('string'), 'sigma_pts': Value('float64'), 'center': Value('float64'), 'level_plus1': Value('float64'), 'level_minus1': Value('float64'), 'level_plus2': Value('float64'), 'level_minus2': Value('float64'), 'level_plus3': Value('float64'), 'level_minus3': Value('float64'), 'dte_days': Value('float64'), 'active_tab_expiry_date': Value('timestamp[s]'), 'sigma': {'qs_method': {'iv': Value('float64'), 'iv_pct': Value('float64'), 'dte_days': Value('float64'), 'future': Value('float64'), 'center': Value('float64'), 'sigma_pts': Value('float64'), 'level_plus1': Value('float64'), 'level_minus1': Value('float64'), 'level_plus2': Value('float64'), 'level_minus2': Value('float64'), 'level_plus3': Value('float64'), 'level_minus3': Value('float64'), 'level_plus0_5': Value('float64'), 'level_minus0_5': Value('float64')}}, 'atm_gree
...
Value('int64')}, 'gex': {'gex_profile': List({'s': Value('float64'), 'gex': Value('float64'), 'c_oi': Value('int64'), 'p_oi': Value('int64'), 'gamma': Value('float64')}), 'total_gex': Value('float64'), 'flip_strike': Value('float64'), 'positive_gex_zone': List(Value('float64')), 'negative_gex_zone': List(Value('float64')), 'gamma_walls': List({'s': Value('float64'), 'gex': Value('float64')}), 'regime': Value('string')}, 'max_pain': {'max_pain': Value('float64'), 'min_pain_value': Value('float64'), 'top3_candidates': List({'s': Value('float64'), 'pain': Value('float64')})}, 'iv_skew': {'risk_reversal': Value('float64'), 'call_25d_iv': Value('float64'), 'put_25d_iv': Value('float64'), 'atm_iv': Value('float64'), 'skew_bias': Value('string')}, 'charm': {'charm_net_vol': Value('float64'), 'charm_net_oi': Value('float64'), 'charm_alert': Value('string'), 'total_vol': Value('int64')}, 'vanna': {'vanna_net_vol': Value('float64'), 'vanna_net_oi': Value('float64'), 'max_vanna_strike': Value('float64'), 'max_vanna_val': Value('float64')}, 'dealer_delta_map': {'dealer_delta_map': List({'s': Value('float64'), 'dd_oi': Value('float64'), 'dd_vol': Value('float64')}), 'total_dd_oi': Value('float64'), 'total_dd_vol': Value('float64'), 'resistance_walls': List({'s': Value('float64'), 'dd_vol': Value('float64')})}, 'straddle_theory': {'str_theory': Value('float64'), 'str_real': Value('float64'), 'premium_ratio': Value('float64'), 'premium_excess': Value('float64'), 'signal': Value('string')}}
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 478, 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 2818, in __iter__
for key, example in ex_iterable:
^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2355, in __iter__
for key, pa_table in self._iter_arrow():
~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2380, 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 2369, in table_cast
return cast_table_to_schema(table, schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
raise CastError(
...<3 lines>...
)
datasets.table.CastError: Couldn't cast
ts: timestamp[s]
price: double
label: string
score: double
data_age_sec: double
frozen_straddle: double
atm_greeks: struct<call: struct<delta: double, gamma: double, vega: double, theta: double, rho: double, iv: doub (... 183 chars omitted)
child 0, call: struct<delta: double, gamma: double, vega: double, theta: double, rho: double, iv: double, oi: int64 (... 31 chars omitted)
child 0, delta: double
child 1, gamma: double
child 2, vega: double
child 3, theta: double
child 4, rho: double
child 5, iv: double
child 6, oi: int64
child 7, volume: int64
child 8, price: double
child 1, put: struct<delta: double, gamma: double, vega: double, theta: double, rho: double, iv: double, oi: int64 (... 31 chars omitted)
child 0, delta: double
child 1, gamma: double
child 2, vega: double
child 3, theta: double
child 4, rho: double
child 5, iv: double
child 6, oi: int64
child 7, volume: int64
child 8, price: double
vol_flow: struct<flow_signal: string, flow_strength: string, flow_bias_pct: double, bull_vol_pct: double, bear (... 253 chars omitted)
child 0, flow_signal: string
child 1, flow_strength: string
child 2, flow_bias_pct: double
child 3, bull_vol_pct: double
child 4, bear_vol_pct: double
child 5, near_bull_vol: int64
child 6, near_bear_vol: int64
child 7, near_total_vol: int64
child 8, top_active_strikes: list<item: struct<s: double, total_vol: int64>>
...
ld 7, oi_imbalance: int64
child 8, pc_oi_ratio: double
child 9, net_delta_vol: double
child 10, vol_imbalance: int64
child 11, pc_vol_ratio: double
child 12, vol_pressure_dir: int64
child 13, vol_pressure_label: string
child 14, call_vol_total: int64
child 15, put_vol_total: int64
child 16, vol_skew: double
child 17, total_oi: int64
child 18, total_volume: int64
level_plus1: double
frozen_ts: int64
datetime_utc: timestamp[s]
level_plus3: double
premiums_frozen: bool
session_iv: double
price_age_sec: double
dte_days: double
level_plus2: double
gex: struct<gex_profile: list<item: struct<s: double, gex: double, c_oi: int64, p_oi: int64, gamma: doubl (... 195 chars omitted)
child 0, gex_profile: list<item: struct<s: double, gex: double, c_oi: int64, p_oi: int64, gamma: double>>
child 0, item: struct<s: double, gex: double, c_oi: int64, p_oi: int64, gamma: double>
child 0, s: double
child 1, gex: double
child 2, c_oi: int64
child 3, p_oi: int64
child 4, gamma: double
child 1, total_gex: double
child 2, flip_strike: double
child 3, positive_gex_zone: list<item: double>
child 0, item: double
child 4, negative_gex_zone: list<item: double>
child 0, item: double
child 5, gamma_walls: list<item: struct<s: double, gex: double>>
child 0, item: struct<s: double, gex: double>
child 0, s: double
child 1, gex: double
child 6, regime: string
straddle_premium: double
to
{'ts': Value('int64'), 'last_data_ts': Value('float64'), 'datetime_utc': Value('timestamp[s]'), 'status': Value('string'), 'future_price': Value('float64'), 'atm_strike': Value('float64'), 'atm_frozen': Value('bool'), 'frozen_strike': Value('float64'), 'frozen_ts': Value('int64'), 'frozen_date_et': Value('timestamp[s]'), 'premiums_frozen': Value('bool'), 'frozen_call_pr': Value('float64'), 'frozen_put_pr': Value('float64'), 'frozen_straddle': Value('float64'), 'premiums_frozen_date_et': Value('string'), 'premiums_frozen_ts': Value('int64'), 'session_straddle': Value('float64'), 'straddle_premium': Value('float64'), 'session_iv': Value('float64'), 'qs_method': Value('string'), 'sigma_pts': Value('float64'), 'center': Value('float64'), 'level_plus1': Value('float64'), 'level_minus1': Value('float64'), 'level_plus2': Value('float64'), 'level_minus2': Value('float64'), 'level_plus3': Value('float64'), 'level_minus3': Value('float64'), 'dte_days': Value('float64'), 'active_tab_expiry_date': Value('timestamp[s]'), 'sigma': {'qs_method': {'iv': Value('float64'), 'iv_pct': Value('float64'), 'dte_days': Value('float64'), 'future': Value('float64'), 'center': Value('float64'), 'sigma_pts': Value('float64'), 'level_plus1': Value('float64'), 'level_minus1': Value('float64'), 'level_plus2': Value('float64'), 'level_minus2': Value('float64'), 'level_plus3': Value('float64'), 'level_minus3': Value('float64'), 'level_plus0_5': Value('float64'), 'level_minus0_5': Value('float64')}}, 'atm_gree
...
Value('int64')}, 'gex': {'gex_profile': List({'s': Value('float64'), 'gex': Value('float64'), 'c_oi': Value('int64'), 'p_oi': Value('int64'), 'gamma': Value('float64')}), 'total_gex': Value('float64'), 'flip_strike': Value('float64'), 'positive_gex_zone': List(Value('float64')), 'negative_gex_zone': List(Value('float64')), 'gamma_walls': List({'s': Value('float64'), 'gex': Value('float64')}), 'regime': Value('string')}, 'max_pain': {'max_pain': Value('float64'), 'min_pain_value': Value('float64'), 'top3_candidates': List({'s': Value('float64'), 'pain': Value('float64')})}, 'iv_skew': {'risk_reversal': Value('float64'), 'call_25d_iv': Value('float64'), 'put_25d_iv': Value('float64'), 'atm_iv': Value('float64'), 'skew_bias': Value('string')}, 'charm': {'charm_net_vol': Value('float64'), 'charm_net_oi': Value('float64'), 'charm_alert': Value('string'), 'total_vol': Value('int64')}, 'vanna': {'vanna_net_vol': Value('float64'), 'vanna_net_oi': Value('float64'), 'max_vanna_strike': Value('float64'), 'max_vanna_val': Value('float64')}, 'dealer_delta_map': {'dealer_delta_map': List({'s': Value('float64'), 'dd_oi': Value('float64'), 'dd_vol': Value('float64')}), 'total_dd_oi': Value('float64'), 'total_dd_vol': Value('float64'), 'resistance_walls': List({'s': Value('float64'), 'dd_vol': Value('float64')})}, 'straddle_theory': {'str_theory': Value('float64'), 'str_real': Value('float64'), 'premium_ratio': Value('float64'), 'premium_excess': Value('float64'), 'signal': Value('string')}}
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