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⚡ Bolt: [performance improvement]#74

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bolt/optimize-dataframe-iteration-7624233410847421369
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⚡ Bolt: [performance improvement]#74
alinelena wants to merge 1 commit into
mainfrom
bolt/optimize-dataframe-iteration-7624233410847421369

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@alinelena

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What: Replaced df.iterrows() with df.to_dict('records') when processing Parquet data in verify_processed_omol25.py. The row object method call was updated accordingly.
Why: Iterating over large Pandas DataFrames using df.iterrows() is notoriously slow, as it wraps each row in a pd.Series object.
Impact: Generates a massive performance improvement (e.g., ~12x faster) during dataset construction by using plain Python dictionaries.
Measurement: Run the verification utility on large parquet datasets and observe the time spent in the file loading/startup phase. Run test_verify_processed_omol25.py locally to verify changes.


PR created automatically by Jules for task 7624233410847421369 started by @alinelena

Converted the DataFrame to a list of dicts first using `df.to_dict("records")`
which yields a massive performance improvement over `.iterrows()` for
iterating rows when constructing datasets. Also patched dependent
to_dict() call on the row object.

Co-authored-by: alinelena <3306823+alinelena@users.noreply.github.com>
@google-labs-jules

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