Module mz_adapter::coord::peek

Logic and types for creating, executing, and tracking peeks.

This module determines if a dataflow can be short-cut, by returning constant values or by reading out of existing arrangements, and implements the appropriate plan.

Structs

• PeekDataflowPlan
• PendingPeek 🔒
  A peek is a request to read data from a maintained arrangement.
• PlannedPeek

Enums

• FastPathPlan
• PeekPlan
  Possible ways in which the coordinator could produce the result for a goal view.
• PeekResponseUnary
  The response from a Peek, with row multiplicities represented in unary.

Functions

• create_fast_path_plan
  Determine if the dataflow plan can be implemented without an actual dataflow.
• mfp_to_safe_plan 🔒
  Convert mfp to an executable, non-temporal plan. It should be non-temporal, as OneShot preparation populates mz_now.
• permute_oneshot_mfp_around_index 🔒