Struct mz_storage_controller::IngestionState

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pub(crate) struct IngestionState<T: TimelyTimestamp> {
    pub read_capabilities: MutableAntichain<T>,
    pub derived_since: Antichain<T>,
    pub dependency_read_holds: Vec<ReadHold<T>>,
    pub write_frontier: Antichain<T>,
    pub hold_policy: ReadPolicy<T>,
    pub instance_id: StorageInstanceId,
    pub hydrated: bool,
}
Expand description

State maintained about ingestions and ingestion exports

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§read_capabilities: MutableAntichain<T>

Really only for keeping track of changes to the derived_since.

§derived_since: Antichain<T>

The current since frontier, derived from write_frontier using hold_policy.

§dependency_read_holds: Vec<ReadHold<T>>

Holds that this ingestion (or ingestion export) has on its dependencies.

§write_frontier: Antichain<T>

Reported write frontier.

§hold_policy: ReadPolicy<T>

The policy that drives how we downgrade our read hold. That is how we derive our since from our upper.

This is a storage-controller-internal policy used to derive its personal read hold on the collection. It should not be confused with any read policies that the adapter might install at StorageCollections.

§instance_id: StorageInstanceId

The ID of the instance in which the ingestion is running.

§hydrated: bool

Whether or not the ingestion is hydrated.

Trait Implementations§

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impl<T: Debug + TimelyTimestamp> Debug for IngestionState<T>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<T> Freeze for IngestionState<T>
where T: Freeze,

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impl<T> !RefUnwindSafe for IngestionState<T>

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impl<T> Send for IngestionState<T>

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impl<T> Sync for IngestionState<T>
where T: Sync,

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impl<T> Unpin for IngestionState<T>
where T: Unpin,

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impl<T> !UnwindSafe for IngestionState<T>

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