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BarrierAnnouncement

laminar_core::cluster::control::barrier

Struct BarrierAnnouncement 

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pub struct BarrierAnnouncement {
    pub epoch: u64,
    pub checkpoint_id: u64,
    pub phase: Phase,
    pub flags: u64,
    pub min_watermark_ms: Option<i64>,
}
Expand description

Leader-written barrier announcement.

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§epoch: u64

Monotonic epoch id.

§checkpoint_id: u64

Coordinator-assigned checkpoint id.

§phase: Phase

Phase this announcement signals.

§flags: u64

Reserved for unaligned/other flags.

§min_watermark_ms: Option<i64>

Cluster-wide minimum watermark at announce time: the min across every live node’s local watermark, computed by the leader from follower acks (see BarrierAck.local_watermark_ms) plus the leader’s own watermark. Populated on Phase::Commit announcements. None on Prepare/Abort (computed only after acks are in) and on legacy payloads deserialised via the #[serde(default)] fallback.

Consumers consult this value instead of their local watermark when deciding whether an event-time window has closed cluster-wide — local progress on one node is stale if another node is still processing earlier events.

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impl Clone for BarrierAnnouncement

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fn clone(&self) -> BarrierAnnouncement

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for BarrierAnnouncement

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for BarrierAnnouncement

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq for BarrierAnnouncement

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for BarrierAnnouncement

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

Serialize this value into the given Serde serializer. Read more
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impl Eq for BarrierAnnouncement

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impl StructuralPartialEq for BarrierAnnouncement

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