[KUDU-2887] Expose the tablet statistics in Client API

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: client
• Labels: impala performance roadmap-candidate
• Assignee: Unassigned
• Reporter: LiFu He
• Created: 04/Jul/19 03:48
• Updated: 13/Jan/21 16:00

Description

The patch about aggregating tablet statistics on the kudu-master is on the way. And I think it's important to expose these statistics in client api by which the query engine can optimize their query plan. For example: (1) adjust the order of scanning tables, (2) Split a big tablet into multiple range pieces(KUDU-2437) to improve concurrency automatically, (3) speed up the query like "select count( *) from table".