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    3. Parquet.Net 1.4 released
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    Ivan Gavryliuk
    Oct 23, 2017

    Parquet.Net 1.4 released

    This is a big release, including a lot of speed and stability improvements:

    https://github.com/elastacloud/parquet-dotnet/releases/tag/1.4.0


    new features:

    - data representation internally changed to columnar format, resulting in much smaller memory footprint and better performance (#238)

    - added support for short/ushort CLR type (#235)

    - breaking change: nullable columns are easier to define, parquet.net doesn't try to guess the nullability anymore and gives full control to the user


    improvements:

    - BigDecimal type supports much bigger numbers (scale and precision) (#239)

    - Writer was failing on some forward-only streams like GZipStream as they don't track stream position, now parquet.net supports all kinds of non-seekable streams for write operations (#252)

    - Decimal number format is now compatible with Impala (#243)


    bug fixes

    - Writer was failing on columns consisting of only null values (#222)

    - When appending to file and using DateTime for one of your columns, subsequent appends would fail on schema validation (#247)

    - Failure when deserialising Impala generated file with all nulls in a column (#240)

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