[IMPALA-7545] Add admission control status to query log

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: Impala 3.1.0
• Component/s: Backend
• Labels: admission-control observability
• Target Version: Impala 3.1.0
• Epic Color: ghx-label-1
• Assignee: Pooja Nilangekar
• Reporter: Tim Armstrong
• Created: 06/Sep/18 19:09
• Updated: 17/Oct/18 17:32
• Resolved: 17/Oct/18 17:32

Description

We already include the query progress in the HS2 GetLog() response (although for some reason we don't do the same for beeswax) so we should include admission control progress. We should definitely include it if the query is currently queued, it's probably too noisy to include once the query has been admitted.

We should also do the same for beeswax/impala-shell so that live_progress/live_summary is useful if the query is queued. We should look at the live_progress/live_summary mechanisms and extend those to include the required information to report admission control state.