[jira] [Created] (AIRFLOW-4760) Packaged DAGs disappear from the DagBag

["Dan MacTough (JIRA)" <ji...@apache.org>]

Dan MacTough created AIRFLOW-4760:
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             Summary: Packaged DAGs disappear from the DagBag
                 Key: AIRFLOW-4760
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-4760
             Project: Apache Airflow
          Issue Type: Bug
          Components: models
    Affects Versions: 1.10.3, 1.10.2, 1.10.1, 1.10.4, 2.0.0
            Reporter: Dan MacTough
            Assignee: Dan MacTough
         Attachments: 2019-06-07-ghosting-before.gif

AIRFLOW-2900 introduced a change that broke Airflow whenever it tries to reprocess a packaged DAG. Since that change, the {{fileloc}} column in the database for packaged DAGs isn't an actual filepath. It looks something like: {{/usr/local/airflow/dags/package.zip/my_dag.py}} -- *notice that the path to the DAG inside the zip is appended to the zip file's path*. Then, when the {{DagBag#process_file}} method tries to load that filepath, it bails because that filepath is invalid.

 

Steps to reproduce:

 
 # Add a packaged DAG to your DAGS_FOLDER
 # From the main /admin UI, click on the DAG to open it's detail view
 # Click the "Refresh" button

 

What should happen:

The detail view should refresh and display a "flash" message saying that the DAG is "fresh as a daisy."

 

What actually happens:

The app redirects to the main /admin UI and displays a "flash" error message in addition to the "fresh as a daisy" message.

 

See animated GIF, attached.



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