lucasbru opened a new pull request, #14975:
URL: https://github.com/apache/kafka/pull/14975

   Session expiration in ZkClient can lead to a thread leak, and does fail CI 
on master.
   
   This is happening in 
`testNoDescribeProduceOrConsumeWithoutTopicDescribeAcl`, and possibly other 
tests.
   
   ```
   org.apache.zookeeper.KeeperException$SessionExpiredException: 
KeeperErrorCode = Session expired ```
   
   Use try-with-resources to close ZkClient if this happens.
   
   This does not fix the underlying session expiration in ZK.
   
   ### Committer Checklist (excluded from commit message)
   - [ ] Verify design and implementation 
   - [ ] Verify test coverage and CI build status
   - [ ] Verify documentation (including upgrade notes)
   


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