[IMPALA-2347] Fix the MetaStoreClientPool to properly reuse HMS connections

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Impala 2.2.4
• Fix Version/s: Impala 2.7.0
• Component/s: Catalog
• Labels: catalog-server performance
• Target Version: Product Backlog
• Assignee: Bharath Vissapragada
• Reporter: Dimitris Tsirogiannis
• Created: 15/Sep/15 22:00
• Updated: 16/Aug/16 02:25
• Resolved: 16/Aug/16 02:25

Description

Due to HIVE-5181, the MetaStoreClientPool does not reuse connections to the Hive metastore and creates a new connection for every request. HIVE-5181 has been fixed since Hive 0.13, so the behavior of the MetaStoreClientPool should be corrected.