[DRILL-2927] Pending query in resource queue starts after timeout

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 1.0.0
• Component/s: Execution - Flow

Environment

Drill 0.8 released version.

• Assignee: Jacques Nadeau
• Reporter: Hao Zhu
• Created: 30/Apr/15 19:44
• Updated: 07/May/15 08:58
• Resolved: 07/May/15 08:57

Description

I set small queue to allow only 1 concurrent query:
alter system set `exec.queue.enable`=TRUE;
alter system set `exec.queue.small`=1;

When running 2 small queries, one of them is pending which is expected.
(See pic 1)

​After about 5mins(exec.queue.timeout_millis), the pending SQL starts. now we have 2 queries running in small queue.
(See pic 2)