parquet-dotnet
https://github.com/aloneguid/parquet-dotnet
C#
Fully managed Apache Parquet implementation
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- Issues
- [BUG]: element type System.DateTime is not supported in DELTA_BINARY_PACKED
- [BUG]: There is no public API to read string values from a list column directly and no example
- [Feature request] Allow definitionLevels / nullablity to be user provided
- [BUG]: TreatByteArrayAsString being ignored in specific case.
- [BUG]: Wrong stats for Timestamp micros
- DATE logical type incorrectly mapped to DateTime instead of DateOnly
- feat: use DateOnly
- [BUG]: Row group reader failed on string list
- [BUG]: DeserializeAsync(rowGroupIndex:) allocates a result list sized to the whole file, causing OOM on large files
- [FEATURE REQUEST]: PascalCase to snake_case
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- C# not yet supported