[YARN-10920] Create a dedicated class for Node Labels

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Assignee: Unassigned
• Reporter: Szilard Nemeth
• Created: 29/Aug/21 22:59
• Updated: 14/Nov/22 20:40
• Resolved: 14/Nov/22 20:40

Description

In the current codebase, Node labels are simple strings. It's very error-prone to use Strings as it can contain basically anything. Moreover, it's easier to keep track of all usages if we have a dedicated class for Node labels.