[YARN-10897] Introduce QueuePath class

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: resourcemanager, yarn
• Labels: pull-request-available
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: Andras Gyori
• Reporter: Andras Gyori
• Created: 25/Aug/21 13:12
• Updated: 25/Jan/24 15:17
• Resolved: 21/Sep/21 14:09

Description

The same idioms regarding queue path strings are repeated over and over in the codebase. Including but not limited to:

• Get parent queue of a queue path
• Split queue path and iterate through it
• Traverse a queue path all the way to root

It also inherently provides some kind of type safety and documentation extension to the code (eg. instead of Map<String, Object> the Map<QueuePath, Object> communicates more clearly what we group items by).

Issue Links

• links to: GitHub Pull Request #3342