[KYLIN-2058] Make Kylin more resilient to bad queries

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: v1.6.0
• Fix Version/s: v1.6.0
• Component/s: Query Engine, Storage - HBase
• Assignee: Dayue Gao
• Reporter: Dayue Gao
• Created: 28/Sep/16 09:59
• Updated: 08/Feb/17 06:14
• Resolved: 08/Feb/17 06:14

Description

Bad/Big queries are a huge threat to the overall performance and stability of Kylin. We occasionally saw some of these queries either causing heavy GC activities or crashing regionservers. I'd like to start a series of work to make Kylin more resilient to bad queries.

This is an umbrella jira to relating works.

Sub-Tasks

• add explicit configuration knob for coprocessor timeout: Closed
• more RAM estimation test for MeasureAggregator and GTAggregateScanner: Closed
• add QueryId: Closed