/// <summary>
/// Finalizes file, writes metadata and footer
/// </summary>
public void Dispose()
{
if (!_dataWritten)
{
return;
}
//finalize file
long size = ThriftStream.Write(_meta.ThriftMeta);
//metadata size
Writer.Write((int)size); //4 bytes
//end magic
WriteMagic(); //4 bytes
Writer.Flush();
Stream.Flush();
}
internal ParquetRowGroupWriter(Schema schema,
Stream stream,
ThriftStream thriftStream,
ThriftFooter footer,
CompressionMethod compressionMethod,
int compressionLevel,
ParquetOptions formatOptions)
{
_schema = schema ?? throw new ArgumentNullException(nameof(schema));
_stream = stream ?? throw new ArgumentNullException(nameof(stream));
_thriftStream = thriftStream ?? throw new ArgumentNullException(nameof(thriftStream));
_footer = footer ?? throw new ArgumentNullException(nameof(footer));
_compressionMethod = compressionMethod;
_compressionLevel = compressionLevel;
_formatOptions = formatOptions;
_thriftRowGroup = _footer.AddRowGroup();
_rgStartPos = _stream.Position;
_thriftRowGroup.Columns = new List <Thrift.ColumnChunk>();
_thschema = _footer.GetWriteableSchema();
}
