[jira] [Created] (HDDS-15449) Avoid leaked event-processing thread and async work outliving tests in TestReconTaskControllerImpl

["Chi-Hsuan Huang (Jira)" <ji...@apache.org>]

Chi-Hsuan Huang created HDDS-15449:
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             Summary: Avoid leaked event-processing thread and async work outliving tests in TestReconTaskControllerImpl
                 Key: HDDS-15449
                 URL: https://issues.apache.org/jira/browse/HDDS-15449
             Project: Apache Ozone
          Issue Type: Sub-task
          Components: Ozone Recon, test
            Reporter: Chi-Hsuan Huang


TestReconTaskControllerImpl starts the controller's background event\-processing thread in setUp\(\) but never stops it in a teardown, so every test leaks that thread.

More importantly, some tests queue async work that outlives the test method. For example, testNewRetryLogicWithSuccessfulCheckpoint calls queueReInitializationEvent\(...\), which offers a reinit event to the buffer; the background loop then runs reInitializeTasks asynchronously after the test method has already returned and asserted. That async work performs real DB writes against the per\-test Derby DB while it is being torn down, producing "Failed to update table" errors.

This was exposed while working on HDDS\-15269: simply adding an @AfterEach that calls stop\(\) is not sufficient, because stop\(\) \(correctly\) waits for the in\-flight reinit to finish, and that in\-flight work races the Derby teardown and stalled for \~30s. So the cleanup must also ensure tests do not leave async work running.

Proposed:
\- Now that stop\(\) returns promptly \(HDDS\-15269\), add a proper teardown that stops the controller.
\- Make tests that queue async events quiesce that work deterministically \(e.g. wait for completion, or drive processing synchronously\) so no async work outlives the test method and races DB teardown.

This is a test\-correctness/hygiene improvement; it also removes per\-test thread leakage during the suite.



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