catboost 1.0.1

on Python PyPI

⚠️ PySpark support is broken in this release.. Please use release 1.0.3 instead.

CatBoost for Apache Spark

• More robust handling of CatBoost Master and Workers failures, avoid freezes.
• Fix for empty partitions. #1687
• Fix use-after-free. #1759 and other random errors.
• Support Spark 3.1.

Python package

• Support python 3.10. #1575

Breaking changes

• Use group weight for generated pairs in pairwise losses

Bugfixes

• Switch to mimalloc allocator on Linux and macOS to avoid problems with static TLS.
• Fix SEGFAULTs on macOS. #1877
• Fix: Distributed training: do not fail if worker contains only learn or test data
• Fix SEGFAULT on CPU with Depthwise training and rsm < 1.
• Fix calc_feature_statistics for cat features. #1882
• Fix result of Cross Validation if metric_period has been specified
• fix eval_metric for Multitarget training