[IMPALA-4202] Warn if topic updates are unusually slow in the last 60 seconds

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Impala 2.8.0
• Component/s: Backend
• Labels: statestore supportability
• Target Version: Product Backlog
• Assignee: Unassigned
• Reporter: Henry Robinson
• Created: 27/Sep/16 00:15
• Updated: 27/Sep/16 00:15

Description

Now that IMPALA-4011 removed the every-update warning when a topic update was slow, we should replace that mechanism with something better. I suggest keeping track of the last N seconds (maybe N=60) of updates and warning if e.g. 50% or more of them are larger than the 2s deadline.