[YARN-9087] Improve logging for initialization of Resource plugins

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.3.0, 3.2.1, 3.1.3
• Component/s: yarn
• Hadoop Flags: Reviewed
• Assignee: Szilard Nemeth
• Reporter: Szilard Nemeth
• Created: 06/Dec/18 16:50
• Updated: 27/Feb/19 09:55
• Resolved: 27/Feb/19 06:27

Description

The patch includes the following enahncements for logging:

• Logging initializer code of resource handlers in LinuxContainerExecutor#init
• Logging initializer code of resource plugins in ResourcePluginManager#initialize
• Added toString to ResourceHandlerChain
• Added toString to all implementations to subclasses of ResourcePlugin as they are printed in ResourcePluginManager#initialize
• Added toString to all implementations to subclasses of ResourceHandler as they are printed as a field of the LinuxContainerExecutor#init