ffinfo commented on issue #4396: [AIRFLOW-3585] - Add edges to database URL: https://github.com/apache/airflow/pull/4396#issuecomment-464302726 @feng-tao option 2 is already implemented. Maybe it's better to keep is like this. The problem here is that this changes makes historical graphs possible, This means take everything that is ruined before this change won't have a graph in the database. We can also generate the graph based on the current graph but that only works if the dag structure is the same as the current dag version. So we might show an incorrect graph, or worse it breaks the ui on this because there are edges to non existing tasks. Because of that I will add a warning to the /graph view that no historical graph data is available in de database, this way the use does know why the graph is not correct.
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