[YARN-9092] Create an object for cgroups mount enable and cgroups mount path as they belong together

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.3.0, 3.2.1, 3.1.3
• Hadoop Flags: Reviewed
• Assignee: Gergely Pollák
• Reporter: Szilard Nemeth
• Created: 08/Dec/18 00:11
• Updated: 09/Aug/19 08:35
• Resolved: 09/Aug/19 08:26

Description

YarnConfiguration.NM_LINUX_CONTAINER_CGROUPS_MOUNT and 

YarnConfiguration.NM_LINUX_CONTAINER_CGROUPS_MOUNT_PATH are used in conjunction many places in the code, so for the sake of readabilty and simplicity, it is better to wrap the values of these configs to an object and use it instead of having 2 fields in 

CGroupsHandlerImpl and in CgroupsLCEResourcesHandler as well.