Function build_segment

nodedb-array/src/query/retention.rs:357–363

Write a segment with the given (TileId, SparseTile) pairs (must be strictly ascending by TileId) and return the in-memory bytes.

(pairs: Vec<(TileId, SparseTile)>)

    /// Write a segment with the given (TileId, SparseTile) pairs (must be
    /// strictly ascending by TileId) and return the in-memory bytes.
    fn build_segment(pairs: Vec<(TileId, SparseTile)>) -> Vec<u8> {
        let mut w = SegmentWriter::new(0xBEEF);
        for (id, tile) in pairs {
            w.append_sparse(id, &tile).unwrap();
        }
        w.finish(None).unwrap()
    }

    /// Build a single-row Live SparseTile at coord `x` with value `v`.
    fn live_tile(schema: &ArraySchema, x: i64, v: i64) -> SparseTile {