[ARROW-15790] [C++] field's metadata is not written to Parquet file

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Duplicate
• Environment: Ubuntu
• External issue URL: https://github.com/apache/arrow/issues/31232

Language

C++

• Assignee: Unassigned
• Reporter: Sifang Li
• Created: 25/Feb/22 21:47
• Updated: 11/Jan/23 11:39
• Resolved: 03/Mar/22 07:40

Description

I used this code to test the metadata write into file and read back behavior of parquet  file:

https://gist.github.com/dantrim/33f9f14d0b2d3ec45c022aa05f7a45ee

 

The generated file does not have metadata when I read the file in using code below and print it out: 
 

std::shared_ptr<arrow::io::ReadableFile> infile;
PARQUET_ASSIGN_OR_THROW(infile,
arrow::io::ReadableFile::Open("./test.parquet", arrow::default_memory_pool()));

std::unique_ptr<parquet::arrow::FileReader> reader;
PARQUET_THROW_NOT_OK(
parquet::arrow::OpenFile(infile, arrow::default_memory_pool(), &reader));
std::shared_ptr<arrow::Table> table;
PARQUET_THROW_NOT_OK(reader->ReadTable(&table));
EXPECT_EQ(frameCount, table->num_rows());
std::cout<<"==="<<table->schema()->ToString(true) <<std::endl; /// no meta shown

Here is the version info:
libparquet-dev/focal,now 7.0.0-1 amd64 [installed]
libparquet-glib-dev/focal,now 7.0.0-1 amd64 [installed]
libparquet-glib700/focal,now 7.0.0-1 amd64 [installed,automatic]
libparquet700/focal,now 7.0.0-1 amd64 [installed,automatic]

Issue Links

• is duplicated by: ARROW-15548 [C++][Parquet] Field-level metadata are not supported? (ColumnMetadata.key_value_metadata)
• is related to: ARROW-15548 [C++][Parquet] Field-level metadata are not supported? (ColumnMetadata.key_value_metadata)