fallintoplace opened a new pull request, #1436: URL: https://github.com/apache/arrow-go/pull/1436
## What Read scalar bit-packed values without setting up a batch decoder. ## Why `GetValue` calls `GetBatch` for one value and repeatedly seeks and refills the buffer. ## Implementation - Decode scalar values from the buffered reader. - Refresh at buffer boundaries, including after truncated batch reads. - Keep zero-width and invalid-width handling. ## Benchmark Scalar decoding only, 8,192 values per buffer. Apple M1 Pro, Go 1.26.3, median of 3 runs: - **1 bit:** 11.06 → 3.72 ns/value (**2.97x faster**). - **32 bits:** 13.05 → 5.69 ns/value (**2.29x faster**). - **64 bits:** 14.45 → 7.37 ns/value (**1.96x faster**). Both versions allocate 0 B/op. These are not end-to-end Parquet results. `GOMAXPROCS=1 go test ./parquet/internal/utils -run '^$' -bench '^BenchmarkBitReaderGetValue$' -benchmem -benchtime=150ms -count=3 -cpu=1` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
