[ARROW-7080] [Python][Parquet][C++] Expose parquet field_id in Schema objects

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.17.0
• Component/s: C++, Python
• Labels: parquet pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/23388
• Assignee: Wes McKinney
• Reporter: Ted Gooch
• Created: 06/Nov/19 18:50
• Updated: 11/Jan/23 07:51
• Resolved: 21/Feb/20 08:19

Description

I'm in the process of adding parquet read support to Iceberg(https://iceberg.apache.org/), and we use the parquet field_ids as a consistent id when reading a parquet file to create a map between the current schema and the schema of the file being read.  Unless I've missed something, it appears that field_id is not exposed in the python APIs in pyarrow._parquet.ParquetSchema nor is it available in pyarrow.lib.Schema.

Would it be possible to add this to either of those two objects?

Issue Links

• links to: GitHub Pull Request #6408