microsoft/SynapseML

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Simple and Distributed Machine Learning Python Library porting ML algorithms for Spark

Stars: 5.2k
Forks: 868
Open beginner issues: 0
Indexed issues: 138
Avg merge: 22h 9m
Merged PRs (30d): 45

Dominant language: Scala
License: MIT
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue help wanted

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138 open issues indexed

[Tracking] Fabric distributed LightGBM reliability: fixes, regressions, and runtime delivery Open

area/lightgbm triage

Difficulty 5/5 Over a week Newbie friendliness 22/100

microsoft/SynapseML#2699 · 4 comments · Opened Sep 5, 2026
[BUG] Distributed categorical LightGBM crashes in SerialTreeLearner::SplitInner Open

area/lightgbm bug triage

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/SynapseML#2697 · 3 comments · Opened Sep 4, 2026
[BUG] LightGBM is failing on a cluster with 2 executors or more Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 45/100

microsoft/SynapseML#2674 · 1 comment · Opened Aug 20, 2026
feat: ship a GPU-enabled LightGBM native so deviceType=gpu can actually train Open

triage

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/SynapseML#2642 · 2 comments · Opened Aug 15, 2026
chore: automate release step 1.6 - queue ADO pipeline 17563 for each release tag Open

triage

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/SynapseML#2641 · 1 comment · Opened Aug 15, 2026
Error Training LGBM Classifier on Databricks Open

triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2452 · 4 comments · Opened Nov 27, 2025
Error Training LGBM Regressor on Fabric Open

triage

microsoft/SynapseML#2438 · 6 comments · 1 assignee · Opened Oct 18, 2025
Adding custom callback functions parameter to LightGBMRegressor (e.g. pruning callback for Optuna HPO) Open

triage

Difficulty 4/5 3-5 days Newbie friendliness 42/100

microsoft/SynapseML#2406 · Opened Aug 5, 2025
[BUG] crashed while call lightgbm fit method Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 20/100

microsoft/SynapseML#2395 · 1 comment · Opened Jul 2, 2025
[BUG]Inconsistent Training AUC after Saving/Loading Parquet Data Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/SynapseML#2394 · 2 reactions · Opened Jun 25, 2025
Stuck on LightGBM Distributed Training in PySpark – Hanging After Socket Communication Open

triage

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/SynapseML#2392 · 1 comment · Opened Jun 17, 2025
How to install to EMR from maven repository to /usr/lib/spark/jars Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2355 · Opened Mar 19, 2025
[BUG] Fail to run the Python built from source Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/SynapseML#2350 · Opened Feb 21, 2025
Link to DB notebook does not exit Open

triage

Difficulty 1/5 Under an hour Newbie friendliness 50/100

microsoft/SynapseML#2346 · Opened Feb 10, 2025
Need to perform incremental training Open

triage

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/SynapseML#2340 · Opened Jan 10, 2025
[BUG] SIGSEGV / SIGBUS error in streaming mode LightGBM Open

bug triage

Difficulty 5/5 Over a week Newbie friendliness 32/100

microsoft/SynapseML#2333 · 3 reactions · Opened Jan 4, 2025
Support multiple treatments in Causal ML Open

triage

Difficulty 5/5 Over a week Newbie friendliness 25/100

microsoft/SynapseML#2328 · 2 comments · Opened Dec 27, 2024
[BUG] lightgbm and CrossValidator are not compatible Open

bug triage

Difficulty 5/5 Over a week Newbie friendliness 20/100

microsoft/SynapseML#2323 · 3 comments · Opened Dec 2, 2024
[BUG] java.net.ConnectException: Connection refused (Connection refused) Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/SynapseML#2310 · 6 comments · 1 reaction · Opened Nov 11, 2024
[BUG]Error using LightGBMRegressor.fit() ==> Py4JJavaError: An error occurred while calling o9599.fit. Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 30/100

microsoft/SynapseML#2305 · 2 comments · Opened Oct 28, 2024
[BUG] When spark.executor.instances > 1, the JVM always crashes. Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/SynapseML#2302 · Opened Oct 15, 2024
[BUG] LightGBMRanker: `groupCol` not recognized - LightGBM sees all records in the DataFrame as part of 1 query/group Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 30/100

microsoft/SynapseML#2290 · 2 comments · Opened Sep 20, 2024
[BUG]LightGBM fit failure during for-loop iteration Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2287 · Opened Sep 14, 2024
[BUG]Lightgbm classifier cannot get training results after setting verbosity=1 & isProvideTrainingMetric=True Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2269 · 4 comments · Opened Aug 27, 2024
[BUG] Error while using "LightGMB" on Fabric Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 52/100

microsoft/SynapseML#2242 · 13 comments · 2 reactions · Opened Jun 20, 2024
[BUG] LightGBMRegressor : 'JavaPackage' object is not callable Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2240 · 1 comment · Opened Jun 18, 2024
[BUG] LightGBMRanker fit causes org.apache.spark.SparkException: Job aborted due to stage failure Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2235 · Opened Jun 12, 2024
[BUG] Isolation Forest java.lang.ClassCastException Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2231 · Opened Jun 7, 2024
[BUG] difference in onnx score when using batch Open

bug triage

microsoft/SynapseML#2228 · 1 assignee · Opened May 23, 2024
[BUG] LightGBM | Required time to fit is too long Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2226 · Opened May 14, 2024
[BUG] java.lang.NoSuchMethodError when using synapse.ml.lightgbm Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2213 · Opened Apr 19, 2024
[BUG] `Java heap space` when running Tabular Explainers.ipynb Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2206 · Opened Apr 17, 2024
Please provide detailed Scala documentation. Open

triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2185 · Opened Mar 26, 2024
[BUG]can't download error :org.apache.commons#commons-math3;3.2!commons-math3.jar Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2170 · 1 comment · Opened Feb 21, 2024
[BUG] LightGBM MLFlow autolog not logging metrics Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 48/100

microsoft/SynapseML#2164 · 1 comment · 1 reaction · Opened Feb 5, 2024
[BUG] Running Inference from ONNX model Open

area/onnx bug triage

microsoft/SynapseML#2133 · 1 comment · 1 assignee · Opened Nov 13, 2023
[BUG] Unable to run LightGBMClassifier on large dataset Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/SynapseML#2105 · 4 comments · Opened Oct 23, 2023
[BUG] distributed training of LightGBM breaks when number of workers decreases while training Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2104 · 1 comment · Opened Oct 23, 2023
Scala 2.13. Compatibility Open

triage

Difficulty 5/5 Over a week Newbie friendliness 35/100

microsoft/SynapseML#2096 · 4 comments · 8 reactions · Opened Oct 13, 2023
[BUG] Unable to save a trained Isolation Forest model in SynapseML Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 35/100

microsoft/SynapseML#2094 · 1 comment · Opened Oct 11, 2023
Bring your own Spark model Open

triage

Difficulty 5/5 Over a week Newbie friendliness 30/100

microsoft/SynapseML#2080 · 3 comments · Opened Sep 21, 2023
[BUG] Using `subscriptionKeyCol` argument results in SparkException [FAILED_EXECUTE_UDF] Open

bug triage

Difficulty 3/5 1-2 days Newbie friendliness 35/100

microsoft/SynapseML#2064 · 1 comment · Opened Sep 4, 2023
[BUG] Unable to install synapse ml on AWS Glue to use LightGBM library Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2055 · 2 comments · Opened Aug 25, 2023
Load and save the lightGBM classifier not producing the same results Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 38/100

microsoft/SynapseML#2053 · 2 comments · Opened Aug 22, 2023
[BUG] LightGBM consistently crashes when trained with categorical features Open

bug triage

Difficulty 4/5 3-5 days Newbie friendliness 25/100

microsoft/SynapseML#2051 · 5 comments · Opened Aug 18, 2023
[BUG] Wasserstein Distance is ill-defined for categorical data and should be excluded Open

area/rai bug

microsoft/SynapseML#2009 · 3 comments · 1 assignee · Opened Jul 10, 2023
[BUG] Jupyter notebook execution behaving randomly Open

bug

microsoft/SynapseML#2004 · 5 comments · 1 assignee · Opened Jul 6, 2023
[LightGBM] java.util.NoSuchElementException with ranker.fit() Open

area/lightgbm bug

microsoft/SynapseML#1973 · 5 comments · 1 assignee · Opened Jun 2, 2023
[LightGBM] Classifier hangs on fit most of the time Open

area/lightgbm bug

microsoft/SynapseML#1967 · 22 comments · 1 assignee · Opened May 31, 2023
[LightGBM] Weight column in LightGBM classifier is not working as per expectation Open

area/lightgbm bug

microsoft/SynapseML#1965 · 2 comments · 2 assignees · Opened May 30, 2023

microsoft/SynapseML

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