[IMPALA-3102] Admission control supportability: update profile before scheduling/queuing

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Impala 2.5.0
• Fix Version/s: Impala 2.5.0
• Component/s: Backend
• Labels: admission-control supportability
• Target Version: Impala 2.6.0
• Assignee: Matthew Jacobs
• Reporter: Matthew Jacobs
• Created: 29/Feb/16 22:36
• Updated: 03/Mar/16 18:55
• Resolved: 03/Mar/16 18:54

Description

A few small but important supportability improvements for
admission control:
1) Set the admission control resource pool before calling
into scheduling.
2) Set the summary profile info strings for queuing
information before blocking on the queue.
3) Some minor logging changes.

1 and 2 will expose important information before a request
is queued so that users can observe what is happening while
a query is waiting to be admitted.