[IGNITE-4105] Create separate thread pool for SQL queries

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.7
• Fix Version/s: 2.0
• Component/s: sql
• Assignee: Sergey Kalashnikov
• Reporter: Vladimir Ozerov
• Created: 24/Oct/16 07:24
• Updated: 23/Mar/17 10:02
• Resolved: 03/Feb/17 09:10

Description

If several long-running queries are executed, all concurrent cache operations will be blocked because there will be no threads in system pool to server cache requests/responses.

Let's introduce separate thread pool for SQL queries execution.

Issue Links

• relates to: IGNITE-4650 Scan and SPI queries must go through dedicated query pool
• links to: GitHub Pull Request #1469
• links to: review link