AmazonScience/migration-bench-java-utg

MigrationBench

1. 📖 Overview

🤗 MigrationBench is a large-scale code migration benchmark dataset at the repository level, across multiple programming languages.

• Current and initial release includes java 8 repositories with the maven build system, as of May 2025.

2. Datasets

There are three datasets in 🤗 MigrationBench:

• All repositories included in the datasets are available on GitHub, under the MIT or Apache-2.0 license.

Index	Dataset	Size	Notes
1	🤗 AmazonScience/migration-bench-java-full	5,102	Each repo has a test directory or at least one test case
2	🤗 AmazonScience/migration-bench-java-selected	300	A subset of 🤗 migration-bench-java-full
3	🤗 AmazonScience/migration-bench-java-utg	4,814	The unit test generation (utg) dataset, disjoint with 🤗 migration-bench-java-full

3. Metadata

Metadata is provided in the csv file for each dataset:

1. repo (str): The original repo URL without the https://github.com/ prefix
2. base_commit (str): Base commit id
   • At this commit with java 8 and maven, the repository is able to (1) compile and (2) pass existing unit tests and integration tests if any
   • It is the starting point for code migration from java 8
3. license (str): The license of the repository, either MIT or Apache2.0 for the whole dataset

4. 📚 Citation

@misc{liu2025migrationbenchrepositorylevelcodemigration,
      title={MigrationBench: Repository-Level Code Migration Benchmark from Java 8},
      author={Linbo Liu and Xinle Liu and Qiang Zhou and Lin Chen and Yihan Liu and Hoan Nguyen and Behrooz Omidvar-Tehrani and Xi Shen and Jun Huan and Omer Tripp and Anoop Deoras},
      year={2025},
      eprint={2505.09569},
      archivePrefix={arXiv},
      primaryClass={cs.SE},
      url={https://arxiv.org/abs/2505.09569},
}