Issues

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

  area/lightgbmtriage
  microsoft/SynapseML#2699 · Filter by author ranadeepsingh opened on Sep 5, 2026
  5

• [BUG] Distributed categorical LightGBM crashes in SerialTreeLearner::SplitInner

  area/lightgbmbugtriage
  microsoft/SynapseML#2697 · Filter by author ranadeepsingh opened on Sep 4, 2026
  3

• [BUG] LightGBM is failing on a cluster with 2 executors or more

  bugtriage
  microsoft/SynapseML#2674 · Filter by author ssabzevari-antuit opened on Aug 20, 2026
  1

• feat: ship a GPU-enabled LightGBM native so deviceType=gpu can actually train

  triage
  microsoft/SynapseML#2642 · Filter by author ranadeepsingh opened on Aug 15, 2026
  2

• chore: automate release step 1.6 - queue ADO pipeline 17563 for each release tag

  triage
  microsoft/SynapseML#2641 · Filter by author ranadeepsingh opened on Aug 15, 2026
  1

• Error Training LGBM Classifier on Databricks

  triage
  microsoft/SynapseML#2452 · Filter by author liuyu930 opened on Nov 27, 2025
  4

• Error Training LGBM Regressor on Fabric

  triage
  microsoft/SynapseML#2438 · Filter by author muhammad-omer-dev opened on Oct 18, 2025
  6

  

• Adding custom callback functions parameter to LightGBMRegressor (e.g. pruning callback for Optuna HPO)

  triage
  microsoft/SynapseML#2406 · Filter by author pantelic-dusan opened on Aug 5, 2025

• [BUG] crashed while call lightgbm fit method

  bugtriage
  microsoft/SynapseML#2395 · Filter by author wyfSunflower opened on Jul 2, 2025
  1

• [BUG]Inconsistent Training AUC after Saving/Loading Parquet Data

  bugtriage
  microsoft/SynapseML#2394 · Filter by author stupidoge opened on Jun 25, 2025

• Stuck on LightGBM Distributed Training in PySpark – Hanging After Socket Communication

  triage
  microsoft/SynapseML#2392 · Filter by author amanjethani-equbot opened on Jun 17, 2025
  1

• How to install to EMR from maven repository to /usr/lib/spark/jars

  bugtriage
  microsoft/SynapseML#2355 · Filter by author hueiyuan opened on Mar 19, 2025
  1

• [BUG] Fail to run the Python built from source

  bugtriage
  microsoft/SynapseML#2350 · Filter by author luyanaa opened on Feb 21, 2025

• Link to DB notebook does not exit

  triage
  microsoft/SynapseML#2346 · Filter by author xusliebana opened on Feb 10, 2025
  2

• Need to perform incremental training

  triage
  microsoft/SynapseML#2340 · Filter by author Herrykite opened on Jan 10, 2025

• [BUG] SIGSEGV / SIGBUS error in streaming mode LightGBM

  bugtriage
  microsoft/SynapseML#2333 · Filter by author fonhorst opened on Jan 4, 2025

• Support multiple treatments in Causal ML

  triage
  microsoft/SynapseML#2328 · Filter by author carl-offerfit opened on Dec 27, 2024
  3

• [BUG] lightgbm and CrossValidator are not compatible

  bugtriage
  microsoft/SynapseML#2323 · Filter by author stupidoge opened on Dec 2, 2024
  3

• [BUG] java.net.ConnectException: Connection refused (Connection refused)

  bugtriage
  microsoft/SynapseML#2310 · Filter by author user673 opened on Nov 11, 2024
  6

• [BUG]Error using LightGBMRegressor.fit() ==> Py4JJavaError: An error occurred while calling o9599.fit.

  bugtriage
  microsoft/SynapseML#2305 · Filter by author jlbp99 opened on Oct 28, 2024
  2

• [BUG] When spark.executor.instances > 1, the JVM always crashes.

  bugtriage
  microsoft/SynapseML#2302 · Filter by author hjr1998 opened on Oct 15, 2024

• [BUG] LightGBMRanker: groupCol not recognized - LightGBM sees all records in the DataFrame as part of 1 query/group

  bugtriage
  microsoft/SynapseML#2290 · Filter by author Vonatzki opened on Sep 20, 2024
  2

• [BUG]LightGBM fit failure during for-loop iteration

  bugtriage
  microsoft/SynapseML#2287 · Filter by author bjm88620 opened on Sep 14, 2024

• [BUG]Lightgbm classifier cannot get training results after setting verbosity=1 & isProvideTrainingMetric=True

  bugtriage
  microsoft/SynapseML#2269 · Filter by author stupidoge opened on Aug 27, 2024
  4

• [BUG] Error while using "LightGMB" on Fabric

  bugtriage
  microsoft/SynapseML#2242 · Filter by author promisinganuj opened on Jun 20, 2024
  13