Stefan Seelmann created AIRFLOW-2529:
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Summary: Graph View DAG Run dropdown
Key: AIRFLOW-2529
URL: https://issues.apache.org/jira/browse/AIRFLOW-2529
Project: Apache Airflow
Issue Type: Improvement
Components: webapp
Affects Versions: 1.9.0
Reporter: Stefan Seelmann
The "Graph View" has a dropdown which contains all DAG run IDs. If there are
many (thousands) of DAG runs the page gets barely usable. It takes multiple
seconds to load the page because all DAG runs must be fetched from DB, are
processed, and a long option list is rendered in the browser. It is also not
very useful because in such a long list it is hard to find a particular DAG run.
A simple fix to address the load time would be to just limit the number of
shown DAG runs. For example only the latest N are shown, N could be "page_size"
from airflow.cfg which is also used in other views. If the DAG run that should
be shown (via query parameters execution_date or run_id) is not included in the
N lastest list it can still be added by a 2nd SQL query.
A more complex change to improve usability would require a different way to
select a DAG run. For example a popup to search for DAG runs with pagination
etc. But such functionality already exits in the /dagrun UI.
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