---
license: apache-2.0
dataset_info:
  features:
  - name: repo
    dtype: string
  - name: base_commit
    dtype: string
  - name: license
    dtype: string
  splits:
  - name: test
    num_examples: 3
programming_languages: [java]
tags:
  - coding
  - code-migration
  - java
  - amazon
  - amazon-science
  - aws
---

# MIGRATION-BENCH
<table>
  <tr>
    <td style="padding: 0;">
      <a href="https://huggingface.co/collections/AmazonScience/migrationbench-68125452fc21a4564b92b6c3">
        <img src="https://img.shields.io/badge/-🤗 MIGRATION--BENCH-4d5eff?style=for-the-badge&labelColor" alt="MIGRATION-BENCH">
      </a>
    </td>
    <td style="padding: 0;">
      <a href="https://github.com/amazon-science/self_debug">
        <img src="https://img.shields.io/badge/Code-000000?style=for-the-badge&logo=github&logoColor=white" alt="Code">
      </a>
    </td>
    <td style="padding: 0; padding-left: 10px; vertical-align: middle;">
      <a href="https://huggingface.co/datasets/AmazonScience/migration-bench-java-full">
        <img src="https://img.shields.io/badge/-🤗 java--full-8a98ff?style=flat&labelColor" alt="java-full">
      </a>
    </td>
    <td style="padding: 0; vertical-align: middle;">
      <a href="https://huggingface.co/datasets/AmazonScience/migration-bench-java-selected">
        <img src="https://img.shields.io/badge/-🤗 java--selected-8a98ff?style=flat&labelColor" alt="java-selected">
      </a>
    </td>
    <td style="padding: 0; vertical-align: middle;">
      <a href="https://huggingface.co/datasets/AmazonScience/migration-bench-java-utg">
        <img src="https://img.shields.io/badge/-🤗 java--utg-8a98ff?style=flat&labelColor" alt="java-utg">
      </a>
    </td>
  </tr>
</table>


## 1. 📖 Overview

[🤗 MIGRATION-BENCH](https://huggingface.co/collections/AmazonScience/migrationbench-68125452fc21a4564b92b6c3)
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 [🤗 MIGRATION-BENCH](https://huggingface.co/collections/AmazonScience/migrationbench-68125452fc21a4564b92b6c3):
- 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`](https://huggingface.co/datasets/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`](https://huggingface.co/datasets/AmazonScience/migration-bench-java-selected) |   300 | A **subset** of [🤗 `migration-bench-java-full`](https://huggingface.co/datasets/AmazonScience/migration-bench-java-full)                                          |
| 3     | [🤗 `AmazonScience/migration-bench-java-utg`](https://huggingface.co/datasets/AmazonScience/migration-bench-java-utg)           | 4,814 | The unit test generation (utg) dataset, **disjoint** with [🤗 `migration-bench-java-full`](https://huggingface.co/datasets/AmazonScience/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
1. `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`
1. `license (str)`: The license of the repository, either `MIT` or `Apache2.0` for the whole dataset


## 4. 📚 Citation