Module rs_write 

Output writers for converting Arrow RecordBatch data to CSV, Feather (Arrow IPC), NDJSON, or Parquet format.

ReadStatWriter manages the lifecycle of format-specific writers, handling streaming writes across multiple batches. It also supports metadata output (pretty-printed or JSON) and parallel Parquet writes via temporary files.

Structs

ReadStatParquetWriter 🔒

Internal wrapper around the Parquet Arrow writer, allowing ownership transfer on close.

ReadStatWriter

Manages writing Arrow [RecordBatch] data to the configured output format.

Enums

ReadStatWriterFormat 🔒

Format-specific writer variant, created lazily on first write.

Functions

format_with_commas 🔒

Formats a number with comma thousands separators (e.g. 1081 -> “1,081”).

write_batch_to_csv_bytes

Serialize a RecordBatch to CSV bytes (with header).

write_batch_to_feather_bytes

Serialize a RecordBatch to Feather (Arrow IPC) bytes.

write_batch_to_ndjson_bytes

Serialize a RecordBatch to NDJSON bytes.

write_batch_to_parquet_bytes

Serialize a RecordBatch to Parquet bytes with Snappy compression.