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Set optimize_file_loading default to False #3513

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wxianxin wants to merge 2 commits into from
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Set optimize_file_loading default to False #3513

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15344e2
Set optimize_file_loading default to False
wxianxin Jan 30, 2026
47e8efc
Fix OOM error in backtest optimization
wxianxin Jan 30, 2026
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1 change: 1 addition & 0 deletions RELEASES.md
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Expand Up @@ -92,6 +92,7 @@ This will be the final release with support for the dYdX v3 (legacy) API. Future
- Fixed Polymarket duplicate trade_id for multi-order fills (#3450), thanks for reporting @santivazq
- Fixed Polymarket `load_all_async` ignoring time-based filters (#3475), thanks @Coyote-Den
- Fixed `MarketIfTouchedOrder` fill price during bar processing to use trigger price instead of bar extremes, thanks @HaakonFlaaronning
- Fixed Avoid OOM error in backtest by setting optimize_file_loading default value to False.

### Internal Improvements
- Added support for setting cache database adapter in cache and `LiveNode` (#3401), thanks @filipmacek
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2 changes: 1 addition & 1 deletion nautilus_trader/persistence/catalog/parquet.py
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Expand Up @@ -1651,7 +1651,7 @@ def backend_session(
where: str | None = None,
session: DataBackendSession | None = None,
files: list[str] | None = None,
optimize_file_loading: bool = True,
optimize_file_loading: bool = False,
**kwargs: Any,
) -> DataBackendSession:
"""
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