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docs: Add acknowledgment to README (#522)
* docs: Add acknowledgment to README * docs: Address review comment
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@@ -178,3 +178,9 @@ open contributions and allowing you to use the software however you want.
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## Contributing
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Please refer to [contribution guidelines](CONTRIBUTING.md) for more information.
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## Acknowledgement
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- GreptimeDB uses [Apache Arrow](https://arrow.apache.org/) as the memory model and [Apache Parquet](https://parquet.apache.org/) as the persistent file format.
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- GreptimeDB's query engine is powered by [Apache Arrow DataFusion](https://github.com/apache/arrow-datafusion).
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- [OpenDAL](https://github.com/datafuselabs/opendal) from [Datafuse Labs](https://github.com/datafuselabs) gives GreptimeDB a very general and elegant data access abstraction layer.
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- GreptimeDB’s meta service is based on [etcd](https://etcd.io/).
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