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fix: move ProgressBar and ModelCheckpoint callbacks to the end in reorder_callbacks #21268

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fix: move ProgressBar and ModelCheckpoint callbacks to the end in reorder_callbacks #21268

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@deependujha deependujha commented Oct 6, 2025 •
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What does this PR do?

Fixes #21264

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📚 Documentation preview 📚: https://pytorch-lightning--21268.org.readthedocs.build/en/21268/

@deependujha
Reorder callback list to prioritize tuner-specific callbacks and main…
d1a2c3a 
…tain order for ProgressBar and ModelCheckpoint
@github-actions github-actions bot added the pl Generic label for PyTorch Lightning package label Oct 6, 2025
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github-actions bot commented Oct 6, 2025 •
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🌩️ Required checks status: Pending 🟡

Groups summary

🟢 pytorch_lightning: Tests workflow
Check ID Status
pl-cpu-guardian success ✅

These checks are required after the changes to src/lightning/pytorch/trainer/connectors/callback_connector.py, tests/tests_pytorch/callbacks/test_callbacks.py, tests/tests_pytorch/trainer/connectors/test_callback_connector.py.

🟡 pytorch_lightning: lit GPU
Check ID Status
pytorch.yml / Lit Job (nvidia/cuda:12.1.1-runtime-ubuntu22.04, pytorch, 3.10) no_status ❓
pytorch.yml / Lit Job (lightning, 3.12) no_status ❓
pytorch.yml / Lit Job (pytorch, 3.12) no_status ❓

These checks are required after the changes to src/lightning/pytorch/trainer/connectors/callback_connector.py, tests/tests_pytorch/callbacks/test_callbacks.py, tests/tests_pytorch/trainer/connectors/test_callback_connector.py.

🟡 Benchmarks
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benchmark.yml / Lit Job (fabric) no_status ❓
benchmark.yml / Lit Job (pytorch) no_status ❓

These checks are required after the changes to src/lightning/pytorch/trainer/connectors/callback_connector.py.

🟢 pytorch_lightning: Docs
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docs-make (pytorch, doctest) success ✅
docs-make (pytorch, html) success ✅

These checks are required after the changes to src/lightning/pytorch/trainer/connectors/callback_connector.py.

🟢 mypy
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mypy success ✅

These checks are required after the changes to src/lightning/pytorch/trainer/connectors/callback_connector.py.

🟢 install
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install-pkg-guardian success ✅

These checks are required after the changes to src/lightning/pytorch/trainer/connectors/callback_connector.py.

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codecov bot commented Oct 6, 2025 •
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79%. Comparing base (4dc1dbc) to head (fa5164c).
✅ All tests successful. No failed tests found.

❗ There is a different number of reports uploaded between BASE (4dc1dbc) and HEAD (fa5164c). Click for more details.

HEAD has 360 uploads less than BASE
Flag BASE (4dc1dbc) HEAD (fa5164c)
cpu 108 27
python 12 3
lightning_fabric 26 0
pytest 57 0
python3.12 12 3
python3.12.7 36 9
lightning 61 15
python3.11 24 6
python3.10 24 6
gpu 3 0
pytorch2.1 12 6
pytest-full 54 27
pytorch2.8 6 3
pytorch_lightning 24 12
pytorch2.4.1 6 3
pytorch2.3 6 3
pytorch2.2.2 6 3
pytorch2.7 6 3
pytorch2.5.1 6 3
pytorch2.6 6 3
Additional details and impacted files 
@@            Coverage Diff            @@
##           master   #21268     +/-   ##
=========================================
- Coverage      87%      79%     -8%     
=========================================
  Files         269      266      -3     
  Lines       23690    23638     -52     
=========================================
- Hits        20671    18641   -2030     
- Misses       3019     4997   +1978

SkafteNicki
SkafteNicki requested changes Oct 7, 2025
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Blocking until discussion in #21264 is resolved

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@SkafteNicki SkafteNicki SkafteNicki requested changes

@lantiga lantiga Awaiting requested review from lantiga lantiga is a code owner

@Borda Borda Awaiting requested review from Borda Borda is a code owner

@tchaton tchaton Awaiting requested review from tchaton tchaton is a code owner

@justusschock justusschock Awaiting requested review from justusschock justusschock is a code owner

@ethanwharris ethanwharris Awaiting requested review from ethanwharris ethanwharris is a code owner

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Successfully merging this pull request may close these issues.

TQDMProgressBar bug (?) causes DDP to hang

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@deependujha @SkafteNicki