Struct mz_adapter::coord::introspection::IntrospectionSubscribe

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pub(super) struct IntrospectionSubscribe {
    cluster_id: ClusterId,
    replica_id: ReplicaId,
    spec: &'static SubscribeSpec,
    deferred_write: Option<StorageWriteOp>,
}

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§cluster_id: ClusterId

The ID of the targeted cluster.

§replica_id: ReplicaId

The ID of the targeted replica.

§spec: &'static SubscribeSpec

The spec from which this subscribe was created.

§deferred_write: Option<StorageWriteOp>

A storage write to be applied the next time the introspection subscribe produces any output.

This mechanism exists to delay the deletion of previous subscribe results from the target storage collection when an introspection subscribe is reinstalled. After reinstallation it can take a while for the new subscribe dataflow to produce its snapshot and keeping the old introspection data around in the meantime makes for a better UX than removing it.

Implementations§

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impl IntrospectionSubscribe

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fn delete_write_op(&self) -> StorageWriteOp

Returns a StorageWriteOp that instructs the deletion of all data previously written by this subscribe.

Trait Implementations§

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impl Debug for IntrospectionSubscribe

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

Formats the value using the given formatter. Read more

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