Expand description
The StateBackend trait persists per-checkpoint-attempt vnode artifacts
and exposes an exact-attempt durability seal. It is not the hot keyed-state
implementation used while operators process records.
Structs§
- Archived
Checkpoint Attempt - An archived
CheckpointAttempt - Checkpoint
Attempt - Exact identity of one checkpoint attempt.
- Checkpoint
Attempt Resolver - The resolver for an archived
CheckpointAttempt - Checkpoint
Seal Inventory - Canonical artifact inventory bound into an immutable checkpoint seal.
- Sealed
Commit Descriptor - Immutable provenance and content attestation for one commit descriptor admitted by a seal.
- Sealed
Commit Descriptor Writer - Exact process and leader term that produced one immutable commit descriptor.
- Sealed
Vnode Partial - Immutable provenance and content attestation for one vnode partial admitted by a seal.
- Sealed
Vnode Writer - Cluster identity that produced one immutable vnode partial.
Enums§
- Checkpoint
Attempt Relation - Explicit relation between two checkpoint attempts.
- State
Backend Durability - Failure scope survived by a state backend.
- State
Backend Error - Errors a
StateBackendcan raise.
Traits§
- State
Backend - A pluggable state store used by streaming operators for partial aggregates and watermarks.