Module plan

This module contain basic definition for dataflow’s plan that can be translate to hydro dataflow

Modules

• join 🔒
• reduce 🔒

Structs

• TypedPlan
  A plan for a dataflow component. But with type to indicate the output type of the relation.

Enums

• Plan
  TODO(discord9): support TableFunc（by define FlatMap that map 1 to n) Plan describe how to transform data in dataflow