bitflicker64 commented on issue #2939:
URL: 
https://github.com/apache/incubator-hugegraph/issues/2939#issuecomment-3772056295

   @Dosu `submit()` itself isn’t the core problem here: `runAndDone()` already 
catches `Throwable`, logs/stores the exception, and (when entered) counts down 
the latch.
   
   The real issue is **before `runAndDone()` runs: if `ContextCallable.call()` 
throws during context init, `runAndDone()` is never entered → 
`latch.countDown()` never happens → `await()` can hang forever, and the 
exception stays hidden in the `Future` since no `get()` is called.
   
   I’ll fix this by wrapping the `ContextCallable` execution so 
`latch.countDown()` always happens , and remove the countdown from 
`runAndDone()` to avoid double-counting.
   


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