roaring · API

`roaring.iceberg_dv`

Apache Iceberg "deletion vector v1" blob framing (https://iceberg.apache.org/puffin-spec/#deletion-vector-v1-blob-type).

4 bytes length of (magic + vector), big-endian 4 bytes magic: D1 D3 39 64 <length - 4> bytes the 64-bit portable Roaring vector 4 bytes CRC-32 (standard, as in gzip) over (magic + vector), big-endian

Row positions in a data file are UInt64, so the vector is a Bitmap64.

Functions

`encode_iceberg_dv`

def encode_iceberg_dv(bitmap: Bitmap64) -> List[UInt8]

Encode bitmap as a framed Iceberg deletion-vector v1 blob.

`decode_iceberg_dv`

def decode_iceberg_dv[origin: Origin[mut=origin.mut], //](data: Span[UInt8, origin]) -> Bitmap64

Decode and verify a framed Iceberg deletion-vector v1 blob, raising on a length, magic, or CRC-32 mismatch.