[IMPALA-9824] MetastoreClientPool should be singleton

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Fix Version/s: Not Applicable
• Component/s: Catalog
• Epic Color: ghx-label-4
• Assignee: Vihang Karajgaonkar
• Reporter: Vihang Karajgaonkar
• Created: 04/Jun/20 07:00
• Updated: 22/Jun/20 17:22
• Resolved: 18/Jun/20 17:15

Description

Currently, the MetastoreClientPool is instantiated at multiple places in the code and it would be good to refactor the code to make it a singleton. Each MetastoreClientPool creates multiple clients to HMS and unnecessary creation of multiple pools could cause problems on HMS side.

Issue Links

• is related to: IMPALA-9405 Unify MetaStoreClientPool Usage