[jira] [Created] (AIRFLOW-4922) If a task crashes, host name is not committed to the database so logs aren't able to be seen in the UI

["Andrew Harmon (JIRA)" <ji...@apache.org>]

Andrew Harmon created AIRFLOW-4922:
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             Summary: If a task crashes, host name is not committed to the database so logs aren't able to be seen in the UI
                 Key: AIRFLOW-4922
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-4922
             Project: Apache Airflow
          Issue Type: Bug
          Components: logging
    Affects Versions: 1.10.3
            Reporter: Andrew Harmon


Sometimes when a task fails, the log show the following
{code}
*** Log file does not exist: /usr/local/airflow/logs/my_dag/my_task/2019-07-07T09:00:00+00:00/1.log*** 
Fetching from: http://:8793/log/my_dag/my_task/2019-07-07T09:00:00+00:00/1.log*** 
Failed to fetch log file from worker. Invalid URL 'http://:8793/log/my_dag/my_task/2019-07-07T09:00:00+00:00/1.log': No host supplied
{code}

I believe this is due to the fact that the row is not committed to the database until after the task finishes. https://github.com/apache/airflow/blob/a1f9d9a03faecbb4ab52def2735e374b2e88b2b9/airflow/models/taskinstance.py#L857



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