parquet-dotnet
https://github.com/aloneguid/parquet-dotnet
C#
Fully managed Apache Parquet implementation
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- Issues
- [BUG]: ArgumentOutOfRangeException thrown when trying to write column (interop type narrowing)
- DataColumn sliced buffers
- Support for serialization of records with no default constructor
- F# class serialization: mutable fields within F# records are duped with @ suffix
- [BUG]: non null string fails with InvalidDataException and is wrongly flagged as nullable
- [WIP] Modular Encryption Support When Reading Parquet Files
- Class deserializer should not require ParquetRequired attribute for required strings
- Serialization of interface typed members
- Feature requst: extend DataColumn API to read column values directly into provided Span/Memory/Array
- Docs
- C# not yet supported