PERF: avoid fallback in dt.total_seconds for Arrow durations #63422
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Avoid conversion to TimedeltaArray by using PyArrow compute directly. Cast duration to int64, then to float64, and multiply by unit factor. ~3.7x speedup (3.53ms -> 0.96ms for 1M rows). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
PyArrow automatically promotes int64 to double when multiplying with float. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <[email protected]>
fangchenli
added
Performance
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