[IGNITE-12991] Calcite integration. Introduce running query registry & cancellation refactoring

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Component/s: sql
• Labels: sql
• Assignee: Taras Ledkov
• Reporter: Igor Seliverstov
• Created: 07/May/20 20:04
• Updated: 11/Nov/22 07:42
• Resolved: 09/Nov/21 08:15

Description

Users should have the ability to cancel a query on planning or execution stages.
Firstly we should have API to retrieve the identifier of the query and API to cancel a query by the identifier.

For cancel planning see AbstractRelOptPlanner.java:91, here CancelFlag is used to cancel planning loop. We need to pass it into a newly created context and bind its state with PlanningContext#queryCancel to break possible infinite planning loop. See also PlanningContext#unwrap

Issue Links

• blocks: IGNITE-15487 Calcite integration. Implements DDL command KILL query
• incorporates: IGNITE-15394 Calcite integration. Query contexts refactoring
• is duplicated by: IGNITE-15323 Calcite engine. Query lifecycle refactoting
• is part of: IGNITE-12248 Apache Calcite based query execution engine
• links to: GitHub Pull Request #9046
• links to: GitHub Pull Request #9476