[YARN-11701] Enhance Federation Cache Clean Conditions

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.1
• Fix Version/s: 3.4.1, 3.5.0
• Component/s: federation
• Labels: pull-request-available
• Target Version/s: 3.4.1, 3.5.0
• Hadoop Flags: Reviewed
• Assignee: Shilun Fan
• Reporter: Shilun Fan
• Created: 15/Jun/24 14:09
• Updated: 21/Jun/24 14:23
• Resolved: 19/Jun/24 00:38

Description

The logic for clearing the Federation Cache has an issue. If the Cache is empty, it may lead to NullPointerException (NPE). This jira will fix this issue.

Issue Links

• links to: GitHub Pull Request #6889