Parquet.Net 3.1.4

Pure .NET library to read and write Apache Parquet files, targeting .NET 4.5 and .NET Standand 1.4 and up. Linux, Windows and Mac are first class citizens, but also works everywhere .NET is running (Android, iOS, IOT). Has zero dependencies on thrid-party libraries or any native code. Provides both low-level access to Apache Parquet files, and high-level utilities for more traditional and humanly understandable row-based access. Includes automatic serializer/deserializer from C# classes into parquet files that works by generating MSIL (bytecode) on the fly and is therefore super fast.

Install-Package Parquet.Net -Version 3.1.4
dotnet add package Parquet.Net --version 3.1.4
paket add Parquet.Net --version 3.1.4
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

3.1.3, 3.1.4:
- includes massive performance improvements in parquet reader, now we are faster than fastparquet (python lib)  

3.1.2:
- new feature: replaced default ToString() method in Table and Row object to produce json (#346)
- new feature: parquet CLI supports conversion from parquet to json (#341)

3.1.1:
parq cli improvements

3.1.0:
- re-introducing utilities for row-based access allowing you to access and create parquet files in more readable format.
- Field class now supports MaxRepetitionLevel and MaxDefinitionLevel
- fixed bug #334 preventing reading generated files in Impala
- parquet.net library supports SourceLink

3.0.5:
- #321 bug fixed: a nullable field should support all-non-nullable values
- performance improvement around packing definition levels

3.0.4:
- bug fixed: Cannot read schema where map elements are structures (#320)

3.0.3
- critical bug fixed: reading parquet files with multiple pages doesn't read beyond 1st page (#318)
   
3.0.2
- performance improvements (#317)

3.0.1
- improvement: better column validation in row group writer
- bug fixed: Snappy compression writer fails on certain encodings (#315)

3.0.0
the first release of a major rewrite

Version History

Version Downloads Last updated
3.1.4 71 10/15/2018
3.1.3 23 10/15/2018
3.1.2 71 10/11/2018
3.1.1 164 10/4/2018
3.1.0 60 10/3/2018
3.1.0-preview-390 37 10/3/2018
3.1.0-preview-373 44 10/2/2018
3.0.5 1,785 8/13/2018
3.0.4 184 7/25/2018
3.0.3 58 7/25/2018
3.0.2 236 7/24/2018
3.0.1 54 7/24/2018
3.0.0 147 7/19/2018
2.1.4 5,284 6/7/2018
2.1.3 29,860 3/30/2018
2.1.2 3,273 1/10/2018
2.1.1 10,544 12/1/2017
2.1.0 294 11/29/2017
2.0.1 108 11/27/2017
2.0.0 111 11/27/2017
1.5.1 418 11/14/2017
1.4.0 2,243 10/23/2017
1.3.0 1,367 9/12/2017
1.2.139 207 9/6/2017
1.1.128 169 8/15/2017
1.0.114 136 7/31/2017