[KYLIN-5311] Improve performance of getSubstitutor

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0-alpha
• Component/s: Others
• Assignee: Jiale He
• Reporter: Jiale He
• Created: 01/Dec/22 05:39
• Updated: 05/Dec/22 10:25
• Resolved: 05/Dec/22 10:25

Description

Fix Design

参考

KYLIN-5274 Improve performance of getSubstitutor - ASF JIRA

1. 将substitutor缓存，不重复初始化

1. 增加CompositeMapView {} 来同时支持properties和system env

1. 增加ICachedExternalConfigLoader 接口，来标识不可变properties