Here’s some Parquet low-level API C++ code used to write a batch of IEEE doubles in a RowGroup. Is there a public Java API equivalent for writing Parquet files?
456 // Append a RowGroup with a specific number of rows. 457 parquet::RowGroupWriter* rg_writer = file_writer->AppendRowGroup(); 502 auto *double_writer = 503 static_cast<parquet::DoubleWriter *>(rg_writer->NextColumn()); 504 505 double_writer->WriteBatch(num_rows, defLevels, nullptr, (double *) double_rows); Thanks, Brian