Sounek commented on issue #10164:
URL: https://github.com/apache/arrow/issues/10164#issuecomment-827462391
Sorry for the trouble. I found the solution by my own.
The default arrow writer property is not to write the schema. The following
code does what I need:
arrow::DoubleBuilder f64builder;
f64builderWcX.AppendValues({1.0, 2.0, 3.0});
std::shared_ptr<arrow::Array> array;
f64builderWcX.Finish(&array);
std::vector<std::shared_ptr<arrow::Field>> fields;
auto field = std::make_shared<arrow::Field>("DataRow1", arrow::float64(),
true, arrow::key_value_metadata({ "Unit" }, { "mm" }));
auto schema = std::make_shared<arrow::Schema>(fields);
schema = schema->WithMetadata(arrow::key_value_metadata({ "user" }, { "me"
}));
auto table = arrow::Table::Make(schema, {array});
std::shared_ptr<arrow::io::FileOutputStream> outfile;
PARQUET_ASSIGN_OR_THROW(outfile,
arrow::io::FileOutputStream::Open("D:\\parquet-arrow-example.parquet"));
parquet::WriterProperties::Builder builder;
std::shared_ptr<parquet::WriterProperties> props = builder.build();
parquet::ArrowWriterProperties::Builder builder2;
builder2.store_schema();
std::shared_ptr<parquet::ArrowWriterProperties> props2 = builder2.build();
PARQUET_THROW_NOT_OK( parquet::arrow::WriteTable(table,
arrow::default_memory_pool(), outfile, 1, props, props2));
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