ParquetSharp 1.5.1.1 Beta 5

• Fixed handling of columns of arrays. Empty arrays would not round-trip properly. (Issue #47)

ParquetSharp 1.5.1.1 Beta 4

• Reviewed and refactored most of the ParquetHandle related code and consolidated it with aggressive GC.KeepAlive calls to avoid the GC prematurely finalizing native resources.

ParquetSharp 1.5.1.1 Beta 3

• Added DeepClone and equality methods to Schema.Node (Issue #40).
• Made Skip() method abstract on ColumnReader to allow untyped skips (Issue #41).

ParquetSharp 1.5.1.1 Beta 2

• Fixed reading empty strings or byte[] causing NullReferenceException (Issue #38).
• Fixed RowOriented API not dealing with Decimal. Support is limited to struct and class by explicitly using the ParquetDecimalScale attribute (Issue #36).
• Fixed BufferOutputStream.Finish() not being mapped correctly to native code (Issue #32).

ParquetSharp 1.5.1.1 Beta 1

• Upgraded to Arrow 0.11.1 (Parquet C++ is now part of Arrow).
• Added support for new BufferedRowGroup API (Issue #34).
• Added support for ColumnPath API.
• Added Linux support.
• Added build scripts for Windows and Linux.
• Added continuous integration via AppVeyor.

The official nuget package contains both a Windows x64 and a Linux x64 binary. The Linux support is experimental at this point, it was built on Ubuntu 18.04 and dynamically links to libstdc++, pthread and libm.

ParquetSharp 1.4.0.3

• Fixed regression of not throwing exception on unsupported column types.
• Fixed incorrect internal buffer length when writing large arrays.

ParquetSharp 1.4.0.2

Promoted 1.4.0.2-beta3 as the final 1.4.0.2 release.

ParquetSharp 1.4.0.2 Beta 3

• Added API overloads for Span and ReadOnlySpan in LogicalColumnReader and Writer (Issue #25).
• LogicalColumnReader now implements IEnumerable to allow foreach usage (Issue #16).
• Fixed ColumnWriter.WriteBatch precondition check on number of values and input length.

ParquetSharp 1.4.0.2 Beta 2

• Go back to 128-bits for decimal, as 96-bits is not enough for round tripping all possible System.Decimal values.
• Make scale a mandatory argument for ColumnDecimal, otherwise it's too easy to miss.
• Make precision also a mandatory argument (even though only exactly 29 digits is currently supported) for consistency.
• Add extra information on (10e+scale * value) overflow exception in Decimal128 ctor.

ParquetSharp 1.4.0.2 Beta 1

• Fixed access violation on writing large strings.
• Added Column.IsSupported(Type type) to check whether a .NET type is supported.
• Added support for .NET System.Decimal. ColumnDecimal defaults to 28 digits of precision, stored as 12-bytes per value. Lower precisions are not supported for the moment (depends on public demand).