o-nikolas commented on issue #43717:
URL: https://github.com/apache/airflow/issues/43717#issuecomment-2704992003

   > Hello [@o-nikolas](https://github.com/o-nikolas), regarding this question:
   > 
   > > Is the issue only occurring with this image? Do you use other images 
which do not see this behaviour? Also, is it always the tail end of the logs 
that is missing? Or is it ever logs at the beginning or middle of the stream?
   > 
   > I need to refresh my memory on how this impacts ECS tasks other than with 
our image executing DBT, but the logs in the original issue are always 
truncated, never missing from the middle or beginning of the task.
   
   Thanks for confirming this! And if you do get around to seeing if any of 
your other images are affected, that would be greatly appreciated :)
   
   > 
   > My belief is that this is caused by logs being pushed to the same 
timestamp in the logstream, and subsequently not being pulled because the 
timestamp is misaligned with the actual execution time. This should be visible 
in the logstreams attached for the successful task execution.
   
   Interesting, we already had a fix in place for this hypothesis: 
https://github.com/apache/airflow/pull/41515
   
   I wonder if a longer sleep is required there, or perhaps an altogether 
different fix. My suspicion is that the issue is eventual consistency on the 
cloudwatch side. I.e. those final logs aren't available to be read yet by the 
time we attempt to pull them. But more investigation is required. 


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