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@Bechamelle Bechamelle commented Sep 19, 2025

Description

Fixes #13569

Checklist

  • Please merge this PR for me once it is approved

@Bechamelle Bechamelle requested review from a team as code owners September 19, 2025 14:13
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@product-auto-label product-auto-label bot added samples Issues that are directly related to samples. api: composer Issues related to the Cloud Composer API. labels Sep 19, 2025
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Summary of Changes

Hello @Bechamelle, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a minor bug within the Airflow database cleanup script. It refines the DagRun cleaning process by eliminating an erroneous iteration over a None value, which could lead to unexpected behavior or inefficient processing. The change ensures that only valid DAG IDs are processed during the cleanup operation, improving the robustness of the script.

Highlights

  • DagRun Cleaning Logic: Removed an unnecessary iteration over None in the list_dags variable during the airflow_db_cleanup process, preventing potential issues or redundant processing.
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Code Review

This pull request fixes a bug in the Airflow database cleanup DAG by removing an extra iteration that was being performed with a None DAG ID. This iteration was redundant and could lead to incorrect behavior, especially for DagRun cleanup. The change is correct and improves the reliability of the cleanup process. I've added one suggestion to improve the readability and efficiency of the list comprehension used to gather DAG IDs.

session.commit()

list_dags = [str(list(dag)[0]) for dag in dags] + [None]
list_dags = [str(list(dag)[0]) for dag in dags]
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medium

While this change correctly removes the redundant None iteration, the list comprehension can be made more efficient and readable. The dags query returns an iterable of tuple-like Row objects. You can access the first element directly using index [0] instead of converting each row to a list first. This avoids creating an unnecessary intermediate list for each DAG.

Suggested change
list_dags = [str(list(dag)[0]) for dag in dags]
list_dags = [str(dag[0]) for dag in dags]

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Successfully merging this pull request may close these issues.

[Composer][airflow_db_cleanup] - All DAGs runs older than max_db_entry_age_in_days are deleted
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