ashb commented on issue #64620:
URL: https://github.com/apache/airflow/issues/64620#issuecomment-4176136520

   How reproducible is this? Is there any way we can make it happen more often 
than "a few times an hour"?
   
   > After the fatal crash, all deferred tasks remain stuck in DEFERRED state 
indefinitely; the triggerer pod is alive but serves
   
   That is def a big issue we need to fix.
   
   The idea behind the async Lock is to try and reuse a single event loop -- 
it's mean to "bubble" back up to reuse the existing async event loop - we 
should never be creating more than one async event loop per process.
   
   Can you show the original un-edited callstack you show here:
   
   ```
     Full traceback:
       greenback/_impl.py:116   greenback_shim
       greenback/_impl.py:201   _greenback_shim
       greenback/_impl.py:81    trampoline
       outcome/_impl.py:185     send
   ```
   
   This isn't a python native stack trace (the formatting is slightly off)


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