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[ci] mypy breaking on pyarrow 24.0: 'Module has no attribute "all"'

blocking

maintenance

Status: Open.

#7238 In lightgbm-org/LightGBM;

· jameslamb opened on Apr 21, 2026

Feature Request: LightGBM Integration with Spark Connect ML - Architecture Proposal

Status: Open.

#7237 In lightgbm-org/LightGBM;

· shadowinlife opened on Apr 21, 2026

[ci] [python-package] scikit-learn 1.9+: 'base_estimator' argument removed from some classes

blocking

maintenance

Status: Open.

#7235 In lightgbm-org/LightGBM;

· jameslamb opened on Apr 21, 2026

CUDA: binary classification probability saturation (prob→1.0) — non-deterministic bug in col-wise histogram kernel

gpu (CUDA)Issue is related to the CUDA GPU variant.Issue is related to the CUDA GPU variant.

Status: Open.

#7231 In lightgbm-org/LightGBM;

· adorkin87 opened on Apr 17, 2026

Unclear error message when feature names only differ by whitespace ('_' vs ' ')

maintenance

Status: Open.

#7230 In lightgbm-org/LightGBM;

· Innixma opened on Apr 15, 2026

Performance regression in predict() / predict_proba() using 4.6.0

Status: Open.

#7229 In lightgbm-org/LightGBM;

· ReasunR opened on Apr 14, 2026

Host nightly packages in easier-to-install places

feature request

Status: Open.

#7227 In lightgbm-org/LightGBM;

· jameslamb opened on Apr 13, 2026

[C++] LGBM_BoosterPredictForMatSingleRow ignores start_iteration due to incomplete predictor cache key

bug

Status: Open.

#7220 In lightgbm-org/LightGBM;

· sabarinathh opened on Apr 7, 2026

[ci] R-package jobs fail compiling {fs}: "cmake: command not found"

blocking

r-package

Status: Open.

#7208 In lightgbm-org/LightGBM;

· jameslamb opened on Mar 23, 2026

Incorrect delta for huber objective

bug

Status: Open.

#7194 In lightgbm-org/LightGBM;

· thebigspin opened on Mar 11, 2026

boost_from_average does nothing for custom objectives, and BoostFromScore cannot be set through model params for custom objective

question

Status: Open.

#7193 In lightgbm-org/LightGBM;

· thebigspin opened on Mar 10, 2026

Moving to 'lightgbm-org/LightGBM'

breaking

doc

Status: Open.

#7187 In lightgbm-org/LightGBM;

· jameslamb opened on Mar 8, 2026