[jira] [Assigned] (FLINK-40567) HistoryServerArchiveFetcherTest.testLazyFetchArchiveProactively is flaky on @TempDir cleanup

["Robert Metzger (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-40567?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Metzger reassigned FLINK-40567:
--------------------------------------

    Assignee: Purushottam Sinha

> HistoryServerArchiveFetcherTest.testLazyFetchArchiveProactively is flaky on @TempDir cleanup
> --------------------------------------------------------------------------------------------
>
>                 Key: FLINK-40567
>                 URL: https://issues.apache.org/jira/browse/FLINK-40567
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Web Frontend
>    Affects Versions: 2.4.0
>            Reporter: Purushottam Sinha
>            Assignee: Purushottam Sinha
>            Priority: Major
>              Labels: pull-request-available, test-stability
>
> h3. Problem
> {{HistoryServerArchiveFetcherTest.testLazyFetchArchiveProactively}} intermittently fails on master CI during JUnit teardown (not on an assertion). The test's {{@TempDir}} cannot be deleted because files under it are still present/open, which fails the build.
> h3. Evidence
> * master run [https://github.com/apache/flink/actions/runs/33989974423] (module: core, {{flink-runtime-web}}) — Run 1 FAIL, Run 2 PASS (flaky).
> * Failure:
> {noformat}
> org.junit.platform.commons.JUnitException: Failed to close extension context
> Caused by: java.io.IOException: Failed to delete temp directory /tmp/junit-6611652694078845454.
>   The following paths could not be deleted (see suppressed exceptions for details): <root>, jobs
>     Suppressed: java.nio.file.DirectoryNotEmptyException: /tmp/junit-6611652694078845454
>     Suppressed: java.nio.file.DirectoryNotEmptyException: /tmp/junit-6611652694078845454/jobs
> {noformat}
> * Test: {{flink-runtime-web/src/test/java/org/apache/flink/runtime/webmonitor/history/HistoryServerArchiveFetcherTest.java:373}}; {{@TempDir}} fields declared at lines 66-67.
> * Distinct from FLINK-40231 (same class, method {{testArchiveStateTransition}}, already Resolved).
> h3. Proposed fix
> * Ensure the fetcher/executor writing into the {{jobs}} directory is stopped and its handles closed before the test method returns, so {{@TempDir}} cleanup finds the directory empty.
> h3. Acceptance
> * Test passes reliably (e.g. repeated/looped local runs) with no "Failed to delete temp directory" error.



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