[IGNITE-13463] Calcite improvements. Rework RootNode rows exchange.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.1
• Component/s: sql

Environment

In current implementation calcite.exec.rel.RootNode generates huge number of context switches, looks like we have a field for optimizations here. Need additional investigations and benchmarks.

• Assignee: Evgeny Stanilovsky
• Reporter: Evgeny Stanilovsky
• Created: 21/Sep/20 08:33
• Updated: 23/Sep/20 04:50
• Resolved: 22/Sep/20 10:02

Issue Links

• is a child of: IGNITE-12248 Apache Calcite based query execution engine
• links to: GitHub Pull Request #8261