[Caideyipi]

Some query execution unit tests include cold fixture and mock initialization in whole-test timeouts or rely on fixed sleeps, and worker failures can be hidden by later timeouts.

Scope cancellation deadlines to asynchronous operations, keep notification ordering under explicit latch control, and ensure cleanup continues when an earlier cleanup step fails. Use bounded result waits for priority queues, collect shared-block queue workers in completion order, and replace the fragment cleanup sleep with executor barriers. No production code changes.

Validation: all six modified test classes passed locally. The latest fixes passed 52 tests across two focused reactor runs; the unchanged sixth class retains its earlier passing result. Both runs succeeded across 28 modules and recompiled all DataNode test sources. Spotless and git diff --check passed. Full unit tests, zh-locale compilation, and remote CI were not run. Remote test attempts were blocked before compilation by build-extension dependency resolution.

[sonarqubecloud]

Quality Gate failed

Failed conditions
C Reliability Rating on New Code (required ≥ A)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 48.11%. Comparing base (999721f) to head (d3d726c).
⚠️ Report is 6 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #19079      +/-   ##
============================================
- Coverage     48.11%   48.11%   -0.01%     
- Complexity      621      625       +4     
============================================
  Files          5572     5572              
  Lines        410286   411488    +1202     
  Branches      54129    54166      +37     
============================================
+ Hits         197408   197980     +572     
- Misses       212878   213508     +630     

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