[YARN-11489] Fix memory leak of DelegationTokenRenewer futures in DelegationTokenRenewerPoolTracker

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: resourcemanager
• Labels: pull-request-available
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: Chun Chen
• Reporter: Chun Chen
• Created: 08/May/23 07:15
• Updated: 28/Jan/24 00:59
• Resolved: 14/May/23 13:39

Description

The future of DelegationTokenRenewer runnable is not removed properly previously, it is only removed if the runnable timeouts.
And a Queue struct is more suitable than a Map struct for storing the futures.

Issue Links

• links to: GitHub Pull Request #5629