[IOTDB-3012] Remove singleton pattern for some classes

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.14.0
• Component/s: Core/Engine
• Labels: pull-request-available
• Assignee: Chao Wang
• Reporter: Chao Wang
• Created: 26/Apr/22 07:39
• Updated: 09/May/22 09:36
• Resolved: 09/May/22 09:36

Description

Remove singleton pattern for some classes

Issue Links

• links to: GitHub Pull Request #5672