Module record 

Core record types: payloads, metadata, and the flow-control signal.

A Record is what moves through an operator chain: a payload (which may borrow from the source’s buffers), a Copy metadata struct, and a clone of the source batch’s acknowledgment handle (AckRef). Records are born inside a chain’s push_batch call (deserialization) and die inside the same call (serialized into shard frames, filtered out, or failed). They are never stored across the chain boundary, so borrowed payloads are sound (ADR-0013).

Structs

PartitionId

Identifier of a source partition (dense, source-assigned).

RawPayload

A raw payload borrowed from the source’s buffers, valid for 'buf.

Record

A record flowing through the chain.

RecordMeta

Per-record metadata. Copy, no drop glue, so it moves through operators for free and never touches the heap.

Enums

Flow

Flow-control result of pushing one record downstream.

Functions

stable_key_hash

Stable, seedless 64-bit hash for shard routing (FNV-1a). Not for adversarial input; routing only. Stability across processes, versions, and platforms is a contract: changing this function reshuffles shards.