This manual is for an old version of Hazelcast Jet, use the latest stable version.

An edge represents a link between two vertices in the DAG. Conceptually, data flows between two vertices along an edge; practically, each processor of the upstream vertex contributes to the overall data stream over the edge and each processor of the downstream vertex receives a part of that stream. For any given pair of vertices, there can be at most one edge between them.

Several properties of the Edge control the routing from upstream to downstream processors.