slfan1989 commented on PR #7865:
URL: https://github.com/apache/hadoop/pull/7865#issuecomment-3186345225

   > It might help to defensively clean up state in 
`TestRouterMountTableCacheRefresh.destroy()` by nulling `cluster`, 
`routerContext`, `mountTableManager`, and `curatorTestingServer` in a `finally` 
block. This could prevent reference leaks across parameterized runs and reduce 
test flakiness.
   
   @zhtttylz Thank you for reviewing this PR! I have looked through the 
relevant code and believe this change is reasonable.


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