risingwave_stream::executor

Struct ChainExecutor

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pub struct ChainExecutor {
    snapshot: Executor,
    upstream: Executor,
    progress: CreateMviewProgressReporter,
    actor_id: ActorId,
    upstream_only: bool,
}
Expand description

ChainExecutor is an executor that enables synchronization between the existing stream and newly appended executors. Currently, ChainExecutor is mainly used to implement MV on MV feature. It pipes new data of existing MVs to newly created MV only all of the old data in the existing MVs are dispatched.

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§snapshot: Executor§upstream: Executor§progress: CreateMviewProgressReporter§actor_id: ActorId§upstream_only: bool

Only consume upstream messages.

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impl ChainExecutor

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pub fn new( snapshot: Executor, upstream: Executor, progress: CreateMviewProgressReporter, upstream_only: bool, ) -> Self

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fn execute_inner( self, ) -> impl Stream<Item = Result<Message, StreamExecutorError>>

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impl Execute for ChainExecutor

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fn execute(self: Box<Self>) -> BoxedMessageStream

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fn execute_with_epoch(self: Box<Self>, _epoch: u64) -> BoxedMessageStream

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fn boxed(self) -> Box<dyn Execute>
where Self: Sized + Send + 'static,

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