[GitHub] [airflow] derkuci commented on pull request #6722: [AIRFLOW-4922]Fix task get log by Web UI

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

derkuci commented on pull request #6722:
URL: https://github.com/apache/airflow/pull/6722#issuecomment-1003754230


   > In the 2.1.1 version, I tried to modify the airflow/utils/log/file_task_handler.py file to obtain the hostname information by reading the log table. I confirmed through debug that I could get the host information in this way, 
   
   @xuemengran could you kindly point to how this could be done?
   
   With airflow 2.2.2 + Celery, I am seeing error messages like below due to `TaskInstance.hostname` being always the latest and not relying on the `try_number`.
   ```
   "Failed to fetch log file from worker. Client error '404 NOT FOUND' for url ..."
   ```
   If we try really hard, the logs can be found from the local storage of _some_ celery workers.  But that is a huge burden for operational and/or debugging.


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