[KAFKA-16072] Create Junit 5 extension to detect thread leak

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: 3.8.0
• Component/s: unit tests
• Labels: newbie++
• Assignee: Unassigned
• Reporter: Divij Vaidya
• Created: 31/Dec/23 16:19
• Updated: 29/Mar/24 19:07

Description

The objective of this task is to create a Junit extension that will execute after every test and verify that there are no lingering threads left over. 

An example of how to create an extension can be found here:
https://github.com/apache/kafka/pull/14783/files#diff-812cfc2780b6fc0e7a1648ff37912ff13aeda4189ea6b0d4d847b831f66e56d1

An example on how to find unexpected threads is at https://github.com/apache/kafka/blob/d5aa341a185f4df23bf587e55bcda4f16fc511f1/core/src/test/scala/unit/kafka/utils/TestUtils.scala#L2427 and also at https://issues.apache.org/jira/browse/KAFKA-16052?focusedCommentId=17800978&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17800978 

Issue Links

• is blocked by: KAFKA-16059 Fix leak of ExpirationReaper-1-AlterAcls threads in :core:test
• is blocked by: KAFKA-16074 Fix thread leaks in ReplicaManagerTest
• is related to: KAFKA-15845 Add Junit5 test extension which detects leaked Kafka clients and servers
• links to: GitHub Pull Request #15101