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combust/mleap

MLeap is a machine learning deployment framework that serializes, stores, and executes ML models outside of their original training environments. It provides a unified bundle format to persist and load models from diverse ecosystems, including Spark MLlib, Scikit-Learn, TensorFlow, and XGBoost. The system enables high-performance inference via a core executor, supporting remote serving through gRPC, HTTP, and Spring Boot integrations. By standardizing model representation, it allows seamless model portability and execution across different runtime environments.

56.9

Adequate · 3 August 2026

28k

lines of production code

Scala

with Python

4

bus factor · 89 authors in all

3

measurements over time

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How it got here

2016 · MLeap serialization and parity expansion

The project established a comprehensive serialization framework for MLeap, introducing support for JSON, Protobuf, and Avro formats while removing legacy bundle mechanisms. This period also significantly expanded parity testing and model support for Spark MLlib transformers, ensuring functional consistency with the Spark ecosystem.

48 changes

2017 · Python SDK and serialization expansion

This period focused on expanding the MLeap ecosystem with a comprehensive Python SDK, enabling serialization and deserialization for Scikit-Learn, PySpark, and TensorFlow models. The work also introduced new Spark ML transformers, improved tensor serialization, and added XGBoost support, significantly broadening the framework's interoperability and deployment capabilities.

31 changes

2018–2021 · Remote serving and cloud storage support

This period focused on expanding MLeap's serving capabilities with the introduction of the MLeap Executor, gRPC, and Spring Boot integrations for remote model inference. It also added support for storing and retrieving model bundles via HDFS and S3, alongside extensive test coverage for new and existing features.

27 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 3 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit 88de54dd4f — the exact code this score is about.
  • Scored under rubric rubric-2026.08.18. Score the same commit under that rubric and you get the same number.
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