[IMPALA-4912] Add Kudu scan metrics

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Impala 2.8.0
• Component/s: Backend
• Labels: kudu perf supportability
• Target Version: Product Backlog
• Assignee: Unassigned
• Reporter: Matthew Jacobs
• Created: 10/Feb/17 18:25
• Updated: 12/Feb/17 23:23

Description

It's currently difficult to diagnose poor performance in Kudu scans if the time isn't spent in Impala itself. Kudu needs to add additional information (KUDU-326) and then Impala should expose it in a query profile.