Struct FrozenBucket 

pub struct FrozenBucket {
    pub terms: BTreeMap<Vec<u8>, Vec<u8>>,
    pub fwd: BTreeMap<Vec<u8>, Vec<u8>>,
    pub n_docs: u64,
    pub total_len: u64,
}

One slide batch’s worth of frozen text entries: term → encoded posting payload, in term order (the segment builder’s key order), plus the bucket’s contribution to the corpus statistics.

Fields

terms: BTreeMap<Vec<u8>, Vec<u8>>

term → encode_posting payload, ascending by term.

fwd: BTreeMap<Vec<u8>, Vec<u8>>

row key → encode_fwd payload, ascending by key — the forward records a later tombstone reads back to withdraw this document’s statistics contribution exactly.

n_docs: u64

Documents frozen.

total_len: u64

Their summed (unweighted) token length.