[jira] [Assigned] (YARN-11983) Shut down leaked mini-cluster instances

["Jose Luis López (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-11983?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jose Luis López reassigned YARN-11983:
--------------------------------------

    Assignee: Jose Luis López

> Shut down leaked mini-cluster instances
> ---------------------------------------
>
>                 Key: YARN-11983
>                 URL: https://issues.apache.org/jira/browse/YARN-11983
>             Project: Hadoop YARN
>          Issue Type: Test
>          Components: test
>            Reporter: Jose Luis López
>            Assignee: Jose Luis López
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 3.6.0
>
>
> Part of the mini-cluster leak scan recorded in HDFS-17957, I discovered theses in the YARN project:
>  
> * TestFederationRMFailoverProxyProvider#testProxyProvider shuts its cluster
> down only on the happy path, so the cluster leaks exactly when the test
> fails.
> * TestMiniYarnClusterNodeUtilization holds a cluster in a field with no
> teardown in the class or its ancestors.
>  
> Impact: a leaked cluster keeps threads, heap and ports alive under the
> remaining tests of the class, and a failure on the happy-path-only pattern can
> cascade into bogus failures of later tests in the same class.
>  
> The fixes are mechanical - try-with-resources, and a teardown method.
> Test-scope only; no production code is touched.



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