fallintoplace opened a new pull request, #1248: URL: https://github.com/apache/arrow-go/pull/1248
## Summary - **Write row-group ranges directly from a record batch.** - Reuse one `*arrow.Chunked` wrapper per column when a batch spans row groups. - Keep the existing path when a batch fits in one row group. - Preserve buffered row-group boundaries, including full and zero-row cases. - Add nested/null round-trip coverage and benchmarks. ## Benchmark Local Apple M1 Pro. `-benchtime=500ms -count=3`. 8 int64 columns, 8,192 rows, row-group size 256. | Method | main | change | allocs/op | | --- | ---: | ---: | ---: | | `Write` | ~2.31 ms, 4.95 MB | ~2.11 ms, 4.87 MB | 21,905 -> 20,761 | | `WriteBuffered` | ~2.54 ms, 6.69 MB | ~2.45 ms, 6.61 MB | 25,407 -> 24,263 | The wall-time result varies a bit between runs. The allocation reduction is consistent. ## Tests - `go test ./parquet/pqarrow -run '^(TestFileWriter|TestWriteOnClosedFileWriter|TestBufferedRecWrite|TestByteArrayStatisticsStreamingReleaseBetweenBatches)$'` - `go test -race ./parquet/pqarrow -run '^(TestFileWriterRangeWritesPreserveData|TestFileWriterZeroRowRecord)$'` - `go vet -composites=false ./parquet/pqarrow` - `go test ./... -run '^$'` - `GOOS=linux GOARCH=386 go test -c -o /dev/null ./parquet/pqarrow` -- 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]
