The GitHub Actions job "Backport Approval Check" on 
texera.git/feat/standalone-sources has succeeded.
Run started by GitHub user kz930 (triggered by kz930).

Head commit for run:
1c9569b7cdc6a1d1f8d6796a566cc4870d415d65 / kary zheng <[email protected]>
fix(workflow-operator): read a CSV DOUBLE column the way the engine's toDouble 
does

The engine reads a field with toDouble, so "NaN", a trailing d or f, and a
hex literal are numbers and the column is inferred DOUBLE. pandas' float
parser takes none of them and kept the whole column as strings, and an
empty cell beside a "NaN" read as NaN too. Read such a column cell by cell
after the read, and keep it nullable only where it holds both.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

Report URL: https://github.com/apache/texera/actions/runs/38475576205

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