private void CompareWithMr(Table t)
{
string testFileName = Path.GetFullPath("temp.parquet");
if (F.Exists(testFileName))
{
F.Delete(testFileName);
}
//produce file
using (Stream s = F.OpenWrite(testFileName))
{
using (var writer = new ParquetWriter(t.Schema, s))
{
writer.Write(t);
}
}
//read back
Table t2 = ParquetReader.ReadTableFromFile(testFileName);
//check we don't have a bug internally before launching MR
Assert.Equal(t.ToString("j"), t2.ToString("j"), ignoreLineEndingDifferences: true);
string mrJson = ExecAndGetOutput(_javaExecName, $"-jar {_toolsJarPath} cat -j {testFileName}");
Assert.Equal(t.ToString("j"), mrJson);
}
static void Main(string[] args)
{
// parquetファイル読込
Table table = ParquetReader.ReadTableFromFile("./data/sample.parquet");
//スキーマ情報の表示
ShowSchema(table.Schema);
Console.WriteLine();
//行データを表示
ShowRows(table);
}