risingwave_meta::stream::stream_graph::actor

Struct ActorGraphBuildResult

Source 
pub struct ActorGraphBuildResult {
    pub graph: BTreeMap<FragmentId, Fragment>,
    pub downstream_fragment_relations: FragmentDownstreamRelation,
    pub building_locations: Locations,
    pub existing_locations: Locations,
    pub upstream_fragment_downstreams: FragmentDownstreamRelation,
    pub replace_upstream: FragmentReplaceUpstream,
    pub new_no_shuffle: FragmentNewNoShuffle,
}
Expand description

The result of a built actor graph. Will be further embedded into the Context for building actors on the compute nodes.

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§graph: BTreeMap<FragmentId, Fragment>

The graph of sealed fragments, including all actors.

§downstream_fragment_relations: FragmentDownstreamRelation

The downstream fragments of the fragments from the new graph to be created.

§building_locations: Locations

The scheduled locations of the actors to be built.

§existing_locations: Locations

The actual locations of the external actors.

§upstream_fragment_downstreams: FragmentDownstreamRelation

The new dispatchers to be added to the upstream mview actors. Used for MV on MV.

§replace_upstream: FragmentReplaceUpstream

The updates to be applied to the downstream fragment merge node. Used for schema change (replace table plan).

§new_no_shuffle: FragmentNewNoShuffle

The new no shuffle added to create the new streaming job, including the no shuffle from existing fragments to the newly created fragments, between two newly created fragments, and from newly created fragments to existing downstream fragments (for create sink into table and replace table).

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