12월, 이달의 pr 투표가 열렸습니다

choo121600 · 1월 14, 2026, 3:11오전

안녕하세요! 이 달의 PR을 투표하는 시간이 왔는데요.
이번 달에는 정말 대단한 PR들이 많이 올라왔습니다!!!
휴가 가있는 동안 팔로우를 못했었는데 지금 보니 엄청난게 많네요.

이달의 PR 후보는 다음과 같습니다:

PR#58365: Fix LocalExecutor memory spike by applying gc.freeze

github.com/apache/airflow

Fix LocalExecutor memory spike by applying gc.freeze

main ← wjddn279:fix-local-executor-cow-issue

열림 12:37PM - 16 Nov 25 UTC

wjddn279

+60 -8

related: https://github.com/apache/airflow/discussions/58143 ### Body As dis…cussed (not confirmed yet), this resolves the issue of sudden memory usage spikes in worker processes when using LocalExecutor. Memory increases due to unnecessary copying of read-only shared memory through COW caused by gc. By applying gc.freeze and moving existing objects to the permanent generation, we prevent COW from occurring. When using fork mode, we create many worker processes at once to minimize gc.freeze and unfreeze calls. When using spawn mode, we maintain the existing approach to ensure stability. ### Benchmark #### memory usage Comparison of per-process memory usage in LocalExecutor before and after applying this PR. Measured in the same environment running 500 tasks per minute for 12 hours. | AS-IS | TO-BE | |-------|-------| | [smem_as-is.txt](https://github.com/user-attachments/files/23567938/smem_as-is.txt) | [smem_to-be.txt](https://github.com/user-attachments/files/23567942/smem_to-be.txt) | | <img width="400" alt="AS-IS" src="https://github.com/user-attachments/assets/53e6122a-5b39-46c6-a862-b635d53d3993" /> | <img width="400" alt="TO-BE" src="https://github.com/user-attachments/assets/9796032f-6d8d-4234-91eb-e2aa186381ba" /> | #### gc.freeze / unfreeze performance (elapsed time) We measured the elapsed time of gc.freeze and gc.unfreeze for each scheduler loop iteration. Most operations took microseconds, confirming virtually no impact. The actual operation is a very lightweight process that simply marks objects in the current generation as permanent generation without any memory copying.https://github.com/python/cpython/pull/3705/files ``` [airflow.jobs.scheduler_job_runner.SchedulerJobRunner] loc=scheduler_job_runner.py:1375 2025-11-15T05:13:36.911715Z [info ] freeze: 18.83 μs [airflow.jobs.scheduler_job_runner.SchedulerJobRunner] loc=scheduler_job_runner.py:1366 2025-11-15T05:13:36.912238Z [info ] freeze_cpu: 10.08 μs [airflow.jobs.scheduler_job_runner.SchedulerJobRunner] loc=scheduler_job_runner.py:1367 2025-11-15T05:13:36.912517Z [info ] unfreeze: 10.92 μs [airflow.jobs.scheduler_job_runner.SchedulerJobRunner] loc=scheduler_job_runner.py:1374 2025-11-15T05:13:36.913268Z [info ] unfreeze_cpu: 6.87 μs ``` --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#pull-request-guidelines)** for more information. In case of fundamental code changes, an Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvement+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in a newsfragment file, named `{pr_number}.significant.rst` or `{issue_number}.significant.rst`, in [airflow-core/newsfragments](https://github.com/apache/airflow/tree/main/airflow-core/newsfragments).

PR#55467: Enhance code view to support search and diff

github.com/apache/airflow

Enhance code view to support search and diff

main ← guan404ming:add-monaco-editor

열림 04:14PM - 10 Sep 25 UTC

guan404ming

+408 -85

## Related Issue https://github.com/apache/airflow/issues/53045 ## What … - Text Search (within DAG code) ↪ Enables quick lookup of task IDs, parameter names, function names, or config snippets - Toggle for File Diff (across DAG Versions) ↪ Helps users understand changes introduced between versions (especially when troubleshooting regressions) https://github.com/user-attachments/assets/8b83a5bf-eccc-4e3c-8f06-d65f0a51bd35 --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#pull-request-guidelines)** for more information. In case of fundamental code changes, an Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvement+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in a newsfragment file, named `{pr_number}.significant.rst` or `{issue_number}.significant.rst`, in [airflow-core/newsfragments](https://github.com/apache/airflow/tree/main/airflow-core/newsfragments).

PR#58548: Add UI E2E testing framework with Playwright and Breeze integration

github.com/apache/airflow

Add UI E2E testing framework with Playwright and Breeze integration

main ← astronomer:playwright-integration

열림 07:07AM - 21 Nov 25 UTC

vatsrahul1001

+1167 -24

Adds UI end-to-end testing framework using Playwright, integrated with Breeze. … - New `breeze testing ui-e2e-tests` command for UI automation tests - Page Object Model structure for maintainable tests - Initial test: DAG trigger workflow with verification ```bash breeze testing ui-e2e-tests --test-pattern "dag-trigger.spec.ts" --headed ``` --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#pull-request-guidelines)** for more information. In case of fundamental code changes, an Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvement+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in a newsfragment file, named `{pr_number}.significant.rst` or `{issue_number}.significant.rst`, in [airflow-core/newsfragments](https://github.com/apache/airflow/tree/main/airflow-core/newsfragments).

PR#56920: Add filters to Task Instances Tab

github.com/apache/airflow

Add filters to Task Instances Tab

main ← Pei-Cheng-Yu:task_instances_filter

열림 03:14AM - 21 Oct 25 UTC

Pei-Cheng-Yu

+213 -155

## Related issues closes: #53051 ## TODO: Filters: - [x] Filters to …Add - [x] Filter by Run ID - [x] Filter by Queue - [x] Filter by Pool - [x] Filter by Operator Type - [x] Filter by Duration Range - [x] Filter by Logical Date (from DAG Level) - [x] Filter by Try Number - [x] Filter by Mapped Index - [x] Filter by DAG Version API: already done by [#53042] ## Screenshots since filter for Task Instances at Task View and Search View are the same one, some demo clip is record on Search View for larger data set, showing the fuctionality <img width="1224" height="819" alt="image" src="https://github.com/user-attachments/assets/f78f6227-aac0-4517-844e-37fea9869d57" /> <img width="1222" height="604" alt="image" src="https://github.com/user-attachments/assets/9fd86c15-8949-44d7-a8a8-805f0d910e75" /> https://github.com/user-attachments/assets/08ed06be-cdaa-48d2-8337-3af556112485 --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#pull-request-guidelines)** for more information. In case of fundamental code changes, an Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvement+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in a newsfragment file, named `{pr_number}.significant.rst` or `{issue_number}.significant.rst`, in [airflow-core/newsfragments](https://github.com/apache/airflow/tree/main/airflow-core/newsfragments).

PR#59183: fix(asset-parition): add a mutex lock to AssetModel when updating APDR

github.com/apache/airflow

fix(asset-parition): add a mutex lock to AssetModel when updating APDR

main ← astronomer:resolve-apdr-race-condition

열림 03:54AM - 08 Dec 25 UTC

Lee-W

+2427 -2695

## Why closes: https://github.com/apache/airflow/issues/58919 ## What Add a… row lock to AssetModel when updating APDR for MySQL and PostgreSQL. Since SQLIte does not support row lock, add retry mechanism if OperationError with `Database is locked` is encountered. --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#pull-request-guidelines)** for more information. In case of fundamental code changes, an Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvement+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in a newsfragment file, named `{pr_number}.significant.rst` or `{issue_number}.significant.rst`, in [airflow-core/newsfragments](https://github.com/apache/airflow/tree/main/airflow-core/newsfragments).

이 달의 PR은 PR 댓글에 #protm 이 있거나 추천을 통해서 선정됩니다.
만약 추천하고 싶은 PR이 있다면 메일링 리스트로 넣어주시면 됩니다!

투표는 1월 16일(금) 오전 10시 PST에 마감되며,
우승 PR은 다음 Airflow 뉴스레터에 소개될 예정입니다.

투표에 참여하고 싶으신 분들은 아래 링크에서 댓글로 참여해보세요!

https://lists.apache.org/thread/yrb037ry0fnhjm8p8jbmx5zrr0o32xyy

choo121600 · 1월 14, 2026, 3:17오전

하나 고르기 어려웠지만 팔은 안으로 굽는다고… 저는 PR#58548 을 뽑았습니다 ㅎㅎ(같이 작업하고 있는데 정말 쉽지 않습니다..)

onestone · 1월 14, 2026, 3:18오전

오 한국분도 계셔요!

github.com/apache/airflow

Fix LocalExecutor memory spike by applying gc.freeze

main ← wjddn279:fix-local-executor-cow-issue

열림 12:37PM - 16 Nov 25 UTC

wjddn279

+60 -8

related: https://github.com/apache/airflow/discussions/58143 ### Body As dis…cussed (not confirmed yet), this resolves the issue of sudden memory usage spikes in worker processes when using LocalExecutor. Memory increases due to unnecessary copying of read-only shared memory through COW caused by gc. By applying gc.freeze and moving existing objects to the permanent generation, we prevent COW from occurring. When using fork mode, we create many worker processes at once to minimize gc.freeze and unfreeze calls. When using spawn mode, we maintain the existing approach to ensure stability. ### Benchmark #### memory usage Comparison of per-process memory usage in LocalExecutor before and after applying this PR. Measured in the same environment running 500 tasks per minute for 12 hours. | AS-IS | TO-BE | |-------|-------| | [smem_as-is.txt](https://github.com/user-attachments/files/23567938/smem_as-is.txt) | [smem_to-be.txt](https://github.com/user-attachments/files/23567942/smem_to-be.txt) | | <img width="400" alt="AS-IS" src="https://github.com/user-attachments/assets/53e6122a-5b39-46c6-a862-b635d53d3993" /> | <img width="400" alt="TO-BE" src="https://github.com/user-attachments/assets/9796032f-6d8d-4234-91eb-e2aa186381ba" /> | #### gc.freeze / unfreeze performance (elapsed time) We measured the elapsed time of gc.freeze and gc.unfreeze for each scheduler loop iteration. Most operations took microseconds, confirming virtually no impact. The actual operation is a very lightweight process that simply marks objects in the current generation as permanent generation without any memory copying.https://github.com/python/cpython/pull/3705/files ``` [airflow.jobs.scheduler_job_runner.SchedulerJobRunner] loc=scheduler_job_runner.py:1375 2025-11-15T05:13:36.911715Z [info ] freeze: 18.83 μs [airflow.jobs.scheduler_job_runner.SchedulerJobRunner] loc=scheduler_job_runner.py:1366 2025-11-15T05:13:36.912238Z [info ] freeze_cpu: 10.08 μs [airflow.jobs.scheduler_job_runner.SchedulerJobRunner] loc=scheduler_job_runner.py:1367 2025-11-15T05:13:36.912517Z [info ] unfreeze: 10.92 μs [airflow.jobs.scheduler_job_runner.SchedulerJobRunner] loc=scheduler_job_runner.py:1374 2025-11-15T05:13:36.913268Z [info ] unfreeze_cpu: 6.87 μs ``` --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#pull-request-guidelines)** for more information. In case of fundamental code changes, an Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvement+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in a newsfragment file, named `{pr_number}.significant.rst` or `{issue_number}.significant.rst`, in [airflow-core/newsfragments](https://github.com/apache/airflow/tree/main/airflow-core/newsfragments).

choo121600 · 1월 21, 2026, 5:12오전

github.com/apache/airflow

Add UI E2E testing framework with Playwright and Breeze integration

main ← astronomer:playwright-integration

열림 07:07AM - 21 Nov 25 UTC

vatsrahul1001

+1167 -24

Adds UI end-to-end testing framework using Playwright, integrated with Breeze. … - New `breeze testing ui-e2e-tests` command for UI automation tests - Page Object Model structure for maintainable tests - Initial test: DAG trigger workflow with verification ```bash breeze testing ui-e2e-tests --test-pattern "dag-trigger.spec.ts" --headed ``` --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#pull-request-guidelines)** for more information. In case of fundamental code changes, an Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvement+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in a newsfragment file, named `{pr_number}.significant.rst` or `{issue_number}.significant.rst`, in [airflow-core/newsfragments](https://github.com/apache/airflow/tree/main/airflow-core/newsfragments).

최종적으로 이 PR이 선정되었네요
현재 저와 비츠 라훌 형님 이렇게 두 명이 e2e 테스트 리뷰에 참여하고 있는데요.

Flaky 이슈도 많이 발생하고 있고,
테스트를 개선하고 구조를 현대화하는 과정에서 수정 작업도 꽤 많았던 것 같아요.

github.com/apache/airflow

refactor: modernize Playwright patterns in Page Objects

main ← choo121600:refactor/playwright-pattern

열림 01:27PM - 24 Dec 25 UTC

choo121600

+20 -14

follow: https://github.com/apache/airflow/pull/59374#issuecomment-3689782602 … Modernizes e2e page objects to follow playwright pattern. ## Changes - Replace `.waitFor()` with `expect().toBeVisible()` across all Page Objects - Remove `waitForPageLoad()` networkidle strategy <img width="1140" height="1397" alt="image" src="https://github.com/user-attachments/assets/8bcc31d8-8e69-443a-8421-63d9590a7c8e" /> --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#pull-request-guidelines)** for more information. In case of fundamental code changes, an Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvement+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in a newsfragment file, named `{pr_number}.significant.rst` or `{issue_number}.significant.rst`, in [airflow-core/newsfragments](https://github.com/apache/airflow/tree/main/airflow-core/newsfragments).

이렇게 같이 테스트 안정성 작업을 하면서 얼마나 고생을 많이 하시는지 알기 때문에…

그래서 개인적으로는 충분히 받을 만한 결과라고 생각합니다!