[jira] [Updated] (YARN-12045) Stop MockRM instances in placement constraint tests

["Yuan Luo (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-12045?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yuan Luo updated YARN-12045:
----------------------------
    Summary: Stop MockRM instances in placement constraint tests  (was: Close MockRM fixtures in placement constraint tests)

> Stop MockRM instances in placement constraint tests
> ---------------------------------------------------
>
>                 Key: YARN-12045
>                 URL: https://issues.apache.org/jira/browse/YARN-12045
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>            Reporter: Yuan Luo
>            Assignee: Yuan Luo
>            Priority: Minor
>              Labels: pull-request-available
>
> h2. Problem
> {{TestAllocationTagsManager}} and {{TestPlacementConstraintsUtil}} start a {{MockRM}} in their setup methods but keep it only in a local variable. Neither class stops its ResourceManager after each test.
> h2. Solution
> * Retain each {{MockRM}} in an instance field and stop it in {{@AfterEach}}.
> * Apply the same fixture-lifecycle fix to both classes.
> * Test-only change; production code, placement assertions, and timeouts are unchanged.
> h2. Validation
> * Local reactor compilation passed with JDK 17 and Maven Wrapper.
> * {{TestAllocationTagsManager}}: 6 tests, 0 failures, 0 errors, 0 skipped.
> * {{TestPlacementConstraintsUtil}}: 12 tests, 0 failures, 0 errors, 0 skipped.
> * Fresh Surefire XML files and {{git diff --check}} verified.
> h2. Related PR
> [PR #8876|https://github.com/apache/hadoop/pull/8876]



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