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https://issues.apache.org/jira/browse/YARN-11388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17643526#comment-17643526
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ASF GitHub Bot commented on YARN-11388:
---------------------------------------

cnauroth opened a new pull request, #5187:
URL: https://github.com/apache/hadoop/pull/5187

   ### Description of PR
   
   * Guarantee servers always get closed, even if a test throws an exception.
   * Keep the generated `excludeFile` in a random test directory.
   * Clean up most style and whitespace warnings.
   
   ### How was this patch tested?
   
   Ran unit tests locally.
   
   ### For code changes:
   
   - [X] Does the title or this PR starts with the corresponding JIRA issue id 
(e.g. 'HADOOP-17799. Your PR title ...')?
   - [ ] Object storage: have the integration tests been executed and the 
endpoint declared according to the connector-specific documentation?
   - [ ] If adding new dependencies to the code, are these dependencies 
licensed in a way that is compatible for inclusion under [ASF 
2.0](http://www.apache.org/legal/resolved.html#category-a)?
   - [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`, 
`NOTICE-binary` files?
   
   




> Prevent resource leaks in TestClientRMService.
> ----------------------------------------------
>
>                 Key: YARN-11388
>                 URL: https://issues.apache.org/jira/browse/YARN-11388
>             Project: Hadoop YARN
>          Issue Type: Test
>          Components: test
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>            Priority: Minor
>
> While working on YARN-11360, I noticed a few problems in 
> {{TestClientRMService}} that made it difficult to work with. Tests do not 
> guarantee that servers they start up get shutdown. If an individual test 
> fails, then it can leave TCP sockets bound, causing subsequent tests in the 
> suite to fail on their socket bind attempts for the same port. There is also 
> a file generated by a test that is leaking outside of the build directory 
> into the source tree.



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