[IMPALA-3175] Cache the Kudu client between queries

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: Kudu_Impala
• Fix Version/s: Impala 2.9.0
• Component/s: Frontend
• Labels: kudu
• Target Version: Kudu_Impala
• Assignee: Unassigned
• Reporter: David Alves
• Created: 11/Mar/16 00:18
• Updated: 11/May/17 20:50
• Resolved: 11/May/17 20:50

Description

Right now each time we analyze a new kudu query and create a new plan we create a new client instance, meaning it will query the master for tablet locations again. If we cache the client between queries it will keep that metadata internally (and invalidate if/when needed).

Issue Links

• duplicates: IMPALA-5167 Reduce number of Kudu clients that get created