[IMPALA-4341] Include metadata loading time in planner timeline

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Impala 2.8.0
• Fix Version/s: Impala 2.9.0
• Component/s: Frontend
• Labels: newbie observability
• Target Version: Product Backlog
• Assignee: Joe McDonnell
• Reporter: Henry Robinson
• Created: 21/Oct/16 22:14
• Updated: 12/Jan/17 21:07
• Resolved: 12/Jan/17 21:07

Description

Because missing metadata loading happens outside of analysis / planning (see AnalysisContext.analyze(), it's not included in the EventSequence that's created in Analyzer.GlobalState. We should move the event sequence into the analysis context, and mark when all metadata was successfully loaded.