[GitHub] [airflow] potiuk commented on issue #13692: task failed with a null hostname

[GitBox <gi...@apache.org>]

potiuk commented on issue #13692:
URL: https://github.com/apache/airflow/issues/13692#issuecomment-1046195900


   > happens on Airflow2.2.4rc1
   
   Almost for sure it is an environmental/deployment issue. But I would love to the bottom of it so I will need your help @changxiaoju.
   
   Does it happen all the time or only sporadically ? How often? Any details on the conditions that it happens ?
   
   Can you check and possibly re-configure your hostname callable @changxiaoju https://airflow.apache.org/docs/apache-airflow/stable/configurations-ref.html#hostname-callable
   
   Those issues can happen if your host cannot rertrieve hostname quickly enough - for example when your DNS experiences slow responses, delays, latency etc. Can you double check please if the hostname_callable of yours responds quickly (for example by repetitive calling it and making sure that you get the right response and report to use what are your findings? 
   
   Also stating what kind of deployment and configuration you have woudl be actually helpful. Specifically also how your DNS works, whether it is a cloud deployment etc? 
   
   You might want to use another method if your DNS is slow to respond and has "lagss" 


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