[HIVE-16588] Resource leak by druid http client

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0
• Component/s: Druid integration
• Labels: druid
• Assignee: Slim Bouguerra
• Reporter: Slim Bouguerra
• Created: 04/May/17 21:43
• Updated: 27/Feb/24 22:24
• Resolved: 08/May/17 15:12

Description

Current implementation of druid storage handler does leak some resources if the creation of the http client fails due to too many files exception.
The reason this is leaking is the fact the cleaning hook is registered after the client starts.
In order to fix this will extract the creation of the HTTP client to become static and reusable instead of per query creation.