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| |
| # Apache Paimon-cpp |
| |
| [](https://www.apache.org/licenses/LICENSE-2.0.html) |
| |
| Paimon-cpp is the C++ implementation of [Apache Paimon](https://paimon.apache.org). |
| It provides native, high-performance, and extensible access to the Paimon lake format for C++ engines and services without JVM dependencies. |
| |
| Background and documentation are available at [paimon.apache.org](https://paimon.apache.org). |
| |
| ## Status |
| |
| Paimon-cpp is currently undergoing repository migration. The original repository is hosted at [github.com/alibaba/paimon-cpp](https://github.com/alibaba/paimon-cpp/), and the codebase is being migrated incrementally to the Apache Paimon community repository. |
| |
| ## Features |
| |
| Paimon-cpp currently provides: |
| |
| - **Write**: append table and primary key table write support with compaction. |
| - **Commit**: append table commit support for simple append-only tables. |
| - **Scan**: batch and stream scan for append tables and primary key tables without changelog. |
| - **Read**: append table read, primary key table read with deletion vector, and primary key table merge-on-read. |
| - **Arrow integration**: batch read and write interfaces based on the [Arrow Columnar In-Memory Format](https://arrow.apache.org). |
| - **File systems**: file system abstraction with built-in local and Jindo file system support. |
| - **File formats**: file format abstraction with built-in ORC, Parquet, and Avro support. |
| - **Runtime utilities**: memory pool and thread pool abstractions with default implementations. |
| - **AI-Oriented Features**: supports RowTracking and DataEvolution mode and provides Global Index capabilities including bitmap index, B-tree index, DiskANN-based vector search with Lumina, and Lucene-based full-text search. |
| - **Compatibility**: compatibility with Apache Paimon Java format and communication protocols, including commit messages, data splits, and manifests. |
| |
| The current implementation supports the `x86_64` architecture. |
| |
| ## Building |
| |
| ```bash |
| git clone https://github.com/apache/paimon-cpp.git |
| cd paimon-cpp |
| ``` |
| |
| Build with CMake: |
| |
| ```bash |
| cmake -B build |
| cmake --build build |
| ``` |
| ### Dev Containers |
| |
| We provide Dev Container configuration file templates. |
| |
| To use a Dev Container as your development environment, follow the steps below, then select `Dev Containers: Reopen in Container` from VS Code's Command Palette. |
| |
| ``` |
| cd .devcontainer |
| cp Dockerfile.template Dockerfile |
| cp devcontainer.json.template devcontainer.json |
| ``` |
| |
| ## Collaboration |
| |
| Paimon-cpp is an active open-source project and we welcome people who want to contribute or share good ideas! |
| Before contributing, please read the [Contributing Guide](CONTRIBUTING.md) and the [Code Style Guide](docs/code-style.md). You are encouraged to check out our [documentation](https://paimon.apache.org/docs/cpp/). |
| |
| ## License |
| |
| This project is licensed under the [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0). |
