[ARROW-16719] [Python] Add path/URI + filesystem handling to parquet.read_metadata

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 10.0.0
• Component/s: Python
• Labels: good-first-issue pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/32060
• Assignee: Kshiteej K
• Reporter: Joris Van den Bossche
• Created: 02/Jun/22 06:57
• Updated: 11/Jan/23 11:46
• Resolved: 17/Aug/22 11:21

Description

Currently you can pass a local file path or file-like object, or a URI (eg "s3://...") or path+filesystem combo to parquet.read_table.
But the parquet.read_metadata and parquet.read_schema methods (being a small wrapper around ParquetFile only accept the local file path or file-like object. I would propose to add the same path+filesystem handling to those functions as happens in read_table to make the capabilities of those consistent.

(I ran into this in geopandas, where we use read_table to read the actual data, but also need read_metadata to inspect the actual Parquet FileMetaData for metadata)

Issue Links

• links to: GitHub Pull Request #13629