Struct CheckpointManifest 

pub struct CheckpointManifest {

    pub version: u32,
    pub checkpoint_id: u64,
    pub epoch: u64,
    pub timestamp_ms: u64,
    pub durable_phase: DurableCheckpointPhase,
    pub participant_id: u64,
    pub source_offsets: HashMap<String, ConnectorCheckpoint>,
    pub table_offsets: HashMap<String, ConnectorCheckpoint>,
    pub operator_states: HashMap<String, OperatorCheckpoint>,
    pub table_store_checkpoint_path: Option<String>,
    pub watermark: Option<i64>,
    pub source_watermarks: HashMap<String, i64>,
    pub source_names: Vec<String>,
    pub sink_names: Vec<String>,
    pub pipeline_identity: PipelineIdentity,
    pub deployment_id: String,
    pub partitioning_abi_version: u16,
    pub vnode_count: u16,
    pub state_checksum: Option<String>,
}

A point-in-time snapshot of all pipeline state.

Fields

version: u32

Manifest format version (for future evolution).

checkpoint_id: u64

Unique, monotonically increasing checkpoint ID; must equal epoch.

epoch: u64

The same checkpoint ID retained in the persisted field named epoch.

timestamp_ms: u64

Timestamp when checkpoint was created (millis since Unix epoch).

durable_phase: DurableCheckpointPhase

Durable publication state. This field is intentionally required.

participant_id: u64

Writer identity (0 outside cluster mode).

source_offsets: HashMap<String, ConnectorCheckpoint>

Per-source connector offsets (key: source name).

table_offsets: HashMap<String, ConnectorCheckpoint>

Per-table source offsets for reference tables (key: table name).

operator_states: HashMap<String, OperatorCheckpoint>

Per-operator checkpoint data (key: operator/node name).

Small state is inlined as base64. Large state is stored in a separate state.bin file and this map holds only a reference marker.

table_store_checkpoint_path: Option<String>

Path to the table store checkpoint, if any.

watermark: Option<i64>

Global watermark at checkpoint time.

source_watermarks: HashMap<String, i64>

Per-source watermarks (key: source name).

source_names: Vec<String>

Sorted names of all registered sources at checkpoint time.

Used during recovery to detect topology changes (added/removed sources) and warn the operator.

sink_names: Vec<String>

Sorted names of all registered sinks at checkpoint time.

pipeline_identity: PipelineIdentity

Required, deterministic identity of the logical topology and state ABI.

deployment_id: String

Create-once checkpoint/decision-store incarnation. A storage reset rotates this value so surviving external sink cursors cannot be reused by a fresh checkpoint-id sequence.

partitioning_abi_version: u16

Durable key encoding, hashing, and key-group mapping contract.

vnode_count: u16

Virtual partition count for state key distribution.

state_checksum: Option<String>

SHA-256 hex digest of the sidecar state.bin file (if any).

Written during checkpoint commit so that recovery can verify the sidecar hasn’t been corrupted or truncated on disk/S3.

Implementations

impl CheckpointManifest

pub fn validate( &self, expected_key_group_count: KeyGroupCount, ) -> Vec<ManifestValidationError>

Validates manifest consistency before recovery.

expected_key_group_count is the runtime’s configured key-group count; a manifest written with a different count can’t be safely restored because state keys won’t map to the same shards.

Returns a list of issues found. An empty list means the manifest is valid. Every returned issue makes the manifest ineligible for recovery.

pub fn new(checkpoint_id: u64, epoch: u64) -> Self

Creates a new manifest for an embedded or single-node runtime.

Validation rejects values where checkpoint_id and epoch differ.

pub fn new_with_key_group_count( checkpoint_id: u64, epoch: u64, key_group_count: KeyGroupCount, ) -> Self

Creates a new manifest with an explicit stable key-group count.

Validation rejects values where checkpoint_id and epoch differ.

Trait Implementations

impl Clone for CheckpointManifest

fn clone(&self) -> CheckpointManifest

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CheckpointManifest

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CheckpointManifest

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for CheckpointManifest

fn eq(&self, other: &CheckpointManifest) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for CheckpointManifest

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for CheckpointManifest