[IGNITE-12592] Calcite integration. Query load balancing.

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Ignite Flags: Docs Required, Release Notes Required
• Assignee: Unassigned
• Reporter: Igor Seliverstov
• Created: 28/Jan/20 12:48
• Updated: 06/May/20 08:14
• Resolved: 06/May/20 08:14

Description

Currently all query tasks execute in a query pool. The pool contains a limited number of threads, so, in case of long running scan operation other query tasks will starve.

We need to limit time a thread spends inside ScanNode#requestInternal method.

See appropriate TODO

Issue Links

• is part of: IGNITE-12248 Apache Calcite based query execution engine